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| 1 | Design strategies for two-dimensional material photodetectors to enhance device performance显示文摘Two-dimensional(2D)materials are intensively attractive for fabricating high sensitive photodetectors in terms of atomically thin flexible and ultrafast charge transport feature.Due to their atomically thin body,designing high performance detector requires new physical mechanisms and device structures.In this review,we classify design strategies and device structures into four categories depending on their physical mechanisms(photovoltaic effect,photoconductive effect,photothermoelectric effect or photobolometric effect,and surface plasma-wave-assisted effect),and summarize the device performances.Finally,future prospects and development direction for 2D material photodetectors are described.Those design strategies descriptions about photoelectronic detector provide a reference for high responsivity and fast response speed photodetector at broadband sensing in the future. | Jun Wang Jiayue Han Xiaoqing Chen Xinran Wang | 2019 | InfoMat2019，1，1： | 16 |
| 2 | Germanium/perovskite heterostructure for high-performance and broadband photodetector from visible to infrared telecommunication band显示文摘A high-performance and broadband heterojunction photodetector has been successfully fabricated.The heterostructure device is based on a uniform and pinhole-free perovskite film constructed on top of a single-crystal germanium layer.The perovskite/germanium photodetector shows enhanced performance and a broad spectrum compared with the single-material-based device.The photon response properties are characterized in detail from the visible to near-infrared spectrum.At an optical fibre communication wavelength of 1550 nm,the heterojunction device exhibits the highest responsivity of 1.4 A/W.The performance is promoted because of an antireflection perovskite coating,the thickness of which is optimized to 150 nm at the telecommunication band.At a visible light wavelength of 680 nm,the device shows outstanding responsivity and detectivity of 228 A/W and 1.6×10^(10) Jones,respectively.These excellent properties arise from the photoconductive gain boost in the heterostructure device.The presented heterojunction photodetector provides a competitive approach for wide-spectrum photodetection from visible to optical communication areas.Based on the distinguished capacity of light detection and harvesting from the visible to near-infrared spectrum,the designed germanium/perovskite heterostructure configuration is believed to provide new building blocks for novel optoelectronic devices. | Wei Hu Hui Cong Wei Huang Yu Huang Lijuan Chen Anlian Pan Chunlai Xue | 2019 | Light(Science & Applications)2019，8，1： | 14 |
| 3 | Lightweight and High-Performance Microwave Absorber Based on 2D WS2-RGO Heterostructures显示文摘Two-dimensional(2D)nanomaterials are categorized as a new class of microwave absorption(MA)materials owing to their high specific surface area and peculiar electronic properties.In this study,2D WS2-reduced graphene oxide(WS2-rGO)heterostructure nanosheets were synthesized via a facile hydrothermal process;moreover,their dielectric and MA properties were reported for the first time.Remarkably,the maximum reflection loss(RL)of the sample-wax composites containing 40 wt% WS2-rGO was-41.5 dB at a thickness of 2.7 mm;furthermore,the bandwidth where RL<-10 dB can reach up to 13.62 GHz(4.38-18 GHz).Synergistic mechanisms derived from the interfacial dielectric coupling and multiple-interface scattering after hybridization of WS2 with rGO were discussed to explain the drastically enhanced microwave absorption performance.The results indicate these lightweight WS2-rGO nanosheets to be potential materials for practical electromagnetic wave-absorbing applications. | Deqing Zhang Tingting Liu Junye Cheng Qi Cao Guangping Zheng Shuang Liang Hao Wang MaoSheng Cao | 2019 | Nano-Micro Letters2019，11，3： | 11 |
| 4 | Two-Dimensional Transition Metal Dichalcogenides and Their Charge Carrier Mobilities in Field-Effect Transistors显示文摘Two-dimensional(2D) materials have attracted extensive interest due to their excellent electrical, thermal,mechanical, and optical properties. Graphene has been one of the most explored 2D materials. However, its zero band gap has limited its applications in electronic devices. Transition metal dichalcogenide(TMDC), another kind of 2D material,has a nonzero direct band gap(same charge carrier momentum in valence and conduction band) at monolayer state,promising for the efficient switching devices(e.g., field-effect transistors). This review mainly focuses on the recent advances in charge carrier mobility and the challenges to achieve high mobility in the electronic devices based on 2DTMDC materials and also includes an introduction of 2D materials along with the synthesis techniques. Finally, this review describes the possible methodology and future prospective to enhance the charge carrier mobility for electronic devices. | Sohail Ahmed Jiabao Yi | 2017 | Nano-Micro Letters2017，9，4： | 9 |
| 5 | 原位形成的In/In2O3-x异质结:In2O3用于CO2电还原生成甲酸的活性物种显示文摘揭示反应条件下催化材料的结构转化与活性物种是理解构效关系和设计高效电催化剂的关键.本文发现结晶性的In2O3在CO2电还原的条件下会原位生成由结晶性In和非晶In2O3-x组成的In/In2O3-x异质结,并作为催化二氧化碳还原反应的活性物种.该异质结电还原CO2生成甲酸的法拉弟效率为89.2%,高于纯In的67.5%.实验表征和理论计算结果表明,In/In2O3-x表现出高活性的原因是肖特基效应导致的In的富电子状态提升了催化剂对于甲酸的选择性.此外,将阴极二氧化碳还原与阳极辛胺氧化反应耦合,不仅可以降低槽电压,还可以同时在两极分别获得甲酸和高附加值的辛腈. | 梁瑜 周伟 史艳梅 刘翠波 张兵 | 2020 | Science Bulletin2020，65，18： | 9 |
| 6 | Designing N-doped graphene/ReSe_(2)/Ti_(3)C_(2) MXene heterostructure frameworks as promising anodes for high-rate potassium-ion batteries显示文摘Developing high-performance anodes for potassium ion batteries(KIBs) is of paramount significance but remains challenging.In the normal sense,electrode materials are prepared by ubiquitous wet chemical routes,which otherwise might not be versatile enough to create desired heterostructures and/or form clean interfacial areas for fast transport of K-ions and electrons.Along this line,rate capability/cycling stability of resulting KIBs are greatly handicapped.Herein we present an all-chemical vapor deposition approach to harness the direct synthesis of nitrogen-doped graphene(NG)/rhenium diselenide(ReSe_2)hybrids over three-dimensional MXene supports as superior heterostructure anode material for KIBs.In such an innovative design,1 T'-ReSe2 nanoparticles are sandwiched in between the NG coatings and MXene frameworks via strong interfacial interactions,thereby affording facile K~+ diffusion,enhancing overall conductivity,boosting high-power performance and reinforcing structural stability of electrodes.Thus-constructed anode delivers an excellent rate performance of 138 mAh g^(-1) at 10.0 A g^(-1) and a high reversible capacity of 90 mAh g^(-1) at 5 A g^(-1) after 300 cycles.Furthermore,the potassium storage mechanism has been systematically probed by advanced in situlex situ characterization techniques in combination with first principles computations. | Zhou Xia Xiwen Chen Haina Cia Zhaodi Fan Yuyang Yi Wanjian Yin Nan Wei Jingsheng Cai Yanfeng Zhang Jingyu Sun | 2021 | Journal of Energy Chemistry2021，30，2： | 9 |
| 7 | Recent Advances in Interface Engineering for Electrocatalytic CO_(2) Reduction Reaction显示文摘Electrocatalytic CO_(2) reduction reaction(CO_(2) RR) can store and transform the intermittent renewable energy in the form of chemical energy for industrial production of chemicals and fuels,which can dramatically reduce CO_(2) emission and contribute to carbon-neutral cycle. E cient electrocatalytic reduction of chemically inert CO_(2) is challenging from thermodynamic and kinetic points of view. Therefore,low-cost,highly e cient,and readily available electrocatalysts have been the focus for promoting the conversion of CO_(2). Very recently,interface engineering has been considered as a highly e ective strategy to modulate the electrocatalytic performance through electronic and/or structural modulation,regulations of electron/proton/mass/intermediates,and the control of local reactant concentration,thereby achieving desirable reaction pathway,inhibiting competing hydrogen generation,breaking binding-energy scaling relations of intermediates,and promoting CO_(2) mass transfer. In this review,we aim to provide a comprehensive overview of current developments in interface engineering for CO_(2) RR from both a theoretical and experimental stand-point,involving interfaces between metal and metal,metal and metal oxide,metal and nonmetal,metal oxide and metal oxide,organic molecules and inorganic materials,electrode and electrolyte,molecular catalysts and electrode,etc. Finally,the opportunities and challenges of interface engineering for CO_(2) RR are proposed. | Junjun Li Sulaiman Umar Abbas Haiqing Wang Zhicheng Zhang Wenping Hu | 2021 | Nano-Micro Letters2021，13，12： | 9 |
| 8 | Preparation of Sandwich-like NiCo2O4/rGO/NiO Heterostructure on Nickel Foam for High-Performance Supercapacitor Electrodes显示文摘A kind of sandwich-like NiCo_2O_4/rGO/NiO heterostructure composite has been successfully anchored on nickel foam substrate via a three-step hydrothermal method with successive annealing treatment. The smart combination of NiCo_2O_4, reduced graphene oxide(rGO), and NiO nanostructure in the sandwich-like nano architecture shows a promising synergistic effect for supercapacitors with greatly enhanced electrochemical performance. For serving as supercapacitor electrode, the NiCo_2O_4/rGO/NiO heterostructure materials exhibit remarkable specific capacitance of 2644 mF cm^(-2)at current density of 1 mA cm^(-2),and excellent capacitance retentions of 97.5% after 3000 cycles. It is expected that the present heterostructure will be a promising electrode material for high-performance supercapacitors. | Delong Li Youning Gong Miaosheng Wang Chunxu Pan | 2017 | Nano-Micro Letters2017，9，2： | 8 |
| 9 | Electrostatic self-assembly of MXene and edge-rich CoAl layered double hydroxide on molecular-scale with superhigh volumetric performances显示文摘It is highly desirable to design and synthesize two-dimensional nanostructured electrode materials with high electrical conductivity,large electrolyte-accessible surface area and more exposed active sites for energy storage applications.Herein,MXene/Co Al-LDH heterostructure has been prepared through electrostatic ordered hetero-assembly of monolayer MXene and edge-rich Co Al-LDH nanosheets in a faceto-face manner on molecular-scale for supercapacitor applications.Benefiting from the unique structure,strong interfacial interaction and synergistic effects between MXene and Co Al-LDH nanosheets,the electrical conductivity and exposed electrolyte-accessible active sites are significantly enhanced.The asprepared MXene/Co Al-LDH-80%(ML-80)film exhibits high volumetric capacity of 2472 C cm-3 in 3 M KOH electrolyte with high rate capability of 70.6%at 20 A g-1.Notably,to the best of our knowledge,the high volumetric capacity is the highest among other previously reported values for supercapacitors in aqueous electrolytes.Furthermore,our asymmetric supercapacitor device fabricated with ML-80 and MXene/graphene composite as cathode and anode,respectively,exhibits impressive volumetric energy density of 85.4 Wh L-1 with impressive cycling stability of 94.4%retention ratio after 30,000 continuous charge/discharge cycles. | Hao Niu Xue Yang Qian Wang Xiaoyan Jing Kui Cheng Kai Zhu Ke Ye Guiling Wang Dianxue Cao Jun Yan | 2020 | Journal of Energy Chemistry2020，29，7： | 6 |
| 10 | Enhanced pyrocatalysis of the pyroelectric BiFeO_(3)/g-C_(3)N_(4) heterostructure for dye decomposition driven by cold–hot temperature alternation显示文摘The BiFeO_(3)/g-C_(3)N_(4) heterostructure,which is fabricated via a simple mixing–calcining method,benefits the significant enhancement of the pyrocatalytic performance.With the growth of g-C_(3)N_(4) content in the heterostructure pyrocatalysts from 0 to 25%,the decomposition ratio of Rhodamine B(RhB)dye after 18 cold-hot temperature fluctuation(25-65℃)cycles increases at first and then decreases,reaching a maximum value of~94.2%at 10%while that of the pure BiFeO_(3) is~67.7%.The enhanced dye decomposition may be due to the generation of the internal electric field which strengthens the separation of the positive and negative carriers and further accelerates their migrations.The intermediate products in the pyrocatalytic reaction also have been detected and confirmed,which proves the key role of the pyroelectric effect in realizing the dye decomposition using BiFeO_(3)/g-C_(3)N_(4) heterostructure catalyst.The pyroelectric BiFeO_(3)/g-C_(3)N_(4) heterostructure shows the potential application in pyrocatalytically degrading dye wastewater. | Mingzi Chen Yanmin Jia Huamei Li Zheng Wu Tianyin Huang Hongfang Zhang | 2021 | Journal of Advanced Ceramics2021，10，2： | 6 |
| 11 | Tunable Syngas Synthesis from Photocatalytic CO2 Reduction Under Visible-Light Irradiation by Interfacial Engineering显示文摘Visible-light-driven CO2 photoreduction to achieve renewable materials,such as syngas,hydrocarbons,and alcohols,is a key process that could relieve environmental problems and the energy crisis simultaneously.Reduction of syngas products with diff erent H2:CO proportions is highly expected to produce high value-added chemicals in the industry.However,the development of technologies employing long-wavelength irradiation to achieve CO2 photoreduction and simultaneous tuning of the resultant H2:CO proportion remains a challenging endeavor.In this work,we carried out interfacial engineering by designing a series of heterostructured layered double-hydroxide/MoS2 nanocomposites via electrostatic self-assembly.The syngas proportion(H 2:CO)obtained from CO2 photoreduction could be modulated from 1:1 to 9:1 by visible-light irradiation(λ>400 nm)under the control of the interface-rich heterostructures.This work provides a cost-eff ective strategy for solar-tofuel conversion in an artificial photosynthetic system and describes a novel route to produce syngas with targeted proportions. | Conghui Qiu Sha Bai Wenjing Cao Ling Tan Junyan Liu Yufei Zhao Yu-Fei Song | 2020 | Transactions of Tianjin University2020，26，5： | 6 |
| 12 | Heterostructures in two-dimensional colloidal metal chalcogenides:Synthetic fundamentals and applications显示文摘As a new class of two-dimensional materials, two-dimensional (2D) heterostructures constructed from metal chalcogenides (MCs) have been gaining tremendous attention due to their unprecedented physical and chemical phenomena, mainly originated from their distinct structural features such as composition, architecture type, spatial arrangement of each component, crystal structure, exposed facet and interface, dimensionality in their heterostructures. Towards the realization of practical applications, synthetic approaches need a rational design with a variety of architecture types including laterally-combined, vertically-aligned, and conformally-coated 2D MC heterostructures. Among various synthetic routes, solution-based synthesis is thought of as an alternative to fabrication through high-cost setups since it can control those structural features in a cheap fashion. This review presents recent progress on solution-based synthesis to produce various 2D MC heterostructures with a focus on the synthetic fundamentals in terms of thermodynamic and kinetic aspects related to the growth mechanism. Four different synthetic approaches are reviewed: seeded growth, cation exchange reaction, colloidal atomic layer deposition, direct synthesis including one-step process and modified electrochemical method. We also provide some representative applications of 2D MC heterostructures and their hybrid composites in various fields including optoelectronics, thermoelectrics, catalysis, and battery. Finally, we offer an insight into challenges and future directions in a synthetic improvement of 2D MC heterostructures. | Yuho Min Eunmi Im Geon-Tae Hwang Jong-Woo Kim Cheol-Woo Ahn Jong-Jin Choi Byung-Dong Hahn Joon-Hwan Choi Woon-Ha Yoon Dong-Soo Park Dong Choon Hyun Geon Dae Moon | 2019 | Nano Research2019，12，8： | 6 |
| 13 | A review:Synthesis,modification and photocatalytic applications of ZnIn_(2)S_(4)显示文摘Solar energy is an ideal energy source for solving energy shortages and serious environmental problems.In the past few decades,photocatalytic technology which uses solar energy to deal with the above problems has caused great interest.ZnIn_(2)S_(4),as a layered ternary metal chalcogenide compound,has a series of advantages such as the wide light absorption range and adjustable bandgap.It has been applied in the different fields of photocatalysis in recent years.This review introduced the crystal structures and growth mechanism of ZnIn_(2)S_(4)and summarized the preparation methods of ZnIn_(2)S_(4).Also,the promoted strategies of ZnIn_(2)S_(4)based photocatalytic system and their applications in the pollutant removal,hydrogen evolution,reduction of CO_(2),nitrogen fixation,and chemical synthesis was summarized.Furthermore,the challenges and development directions of the current ZnIn_(2)S_(4)based photocatalytic system were proposed.It is hoped that this review will help researchers design a better ZnIn_(2)S_(4)based photocatalytic system. | Jie Wang Sijia Sun Run Zhou Yangzi Li Zetian He Hao Ding Daimei Chen Weihua Ao | 2021 | Journal of Materials Science & Technology2021，，19： | 6 |
| 14 | Intelligent identification of two-dimensional nanostructures by machine-learning optical microscopy显示文摘Two-dimensional (2D)materials and their heterostructures,with wafer-scale synthesis methods and fascinating properties,have attracted significant interest and triggered revolutions in corresponding device applications.However,facile methods to realize accurate,intelligent,and large-area characterizations of these 2D nanostructures are still highly desired.Herein,we report the successful application of machine-learning strategy in the optical identification of 2D nanostructures.The machine-leaming optical identification (MOI)method endows optical microscopy with intelligent insight into the characteristic color information of 2D nanostructures in the optical photograph.The experimental results indicate that the MOI method enables accurate,intelligent,and large-area characterizations of graphene,molybdenum disulfide,and their heterostructures, including identifications of the thickness,existence of impurities,and even stacking order.With the convergence of artificial intelligence and nanoscience,this intelligent identification method can certainly promote fundamental research and wafer-scale device applications of 2D nanostructures. | Xiaoyang Lin Zhizhong Si Wenzhi Fu Jianlei Yang Side Guo Yuan Cao Jin Zhang Xinhe Wang Peng Liu Kaili Jiang Weisheng Zhao | 2018 | Nano Research2018，11，12： | 5 |
| 15 | Preparation of CuS/BiVO4 thin film and its efficacious photoelectrochemical performance in hydrogen generation显示文摘To drive photoelectrochemical water splitting on porous BiVO4 photoanode,we herein prepared a carnationlike CuS powder by hydrothermal method and then loaded it onto BiVO4 photoelectrode.Expectedly,the CuS/BiVO4 composite not only presents a higher photocurrent response value at 1.23 V versus RHE(reversible hydrogen electrode)than pure BiVO4 electrode under visible light irradiation,but also exhibits an excellent photoelectrochemical hydrogen production activity in comparison with either the BiVO4 or the CuS.The high ameliorated performance of CuS/BiVO4 composite may be due to the strong absorption of visible light and an effective abatement in combination of carriers.These results demonstrate an effective potential approach to design and construct efficient photoelectrochemical(PEC)systems. | Yuan Li Yue Yang Jing-Wei Huang Lei Wang Hou-De She Jun-Bo Zhong Qi-Zhao Wang | 2019 | Rare Metals2019，38，5： | 5 |
| 16 | Strongly Coupled 2D Transition Metal Chalcogenide-MXene-Carbonaceous Nanoribbon Heterostructures with Ultrafast Ion Transport for Boosting Sodium/Potassium Ions Storage显示文摘Combining with the advantages of two-dimensional(2D)nanomaterials,MXenes have shown great potential in next generation rechargeable batteries.Similar with other 2D materials,MXenes generally suffer severe self-agglomeration,low capacity,and unsatisfied durability,particularly for larger sodium/potassium ions,compromising their practical values.In this work,a novel ternary heterostructure self-assembled from transition metal selenides(MSe,M=Cu,Ni,and Co),MXene nanosheets and N-rich carbonaceous nanoribbons(CNRibs)with ultrafast ion transport properties is designed for sluggish sodium-ion(SIB)and potassium-ion(PIB)batteries.Benefiting from the diverse chemical characteristics,the positively charged MSe anchored onto the electronegative hydroxy(-OH)functionalized MXene surfaces through electrostatic adsorption,while the fungal-derived CNRibs bonded with the other side of MXene through amino bridging and hydrogen bonds.This unique MXene-based heterostructure prevents the restacking of 2D materials,increases the intrinsic conductivity,and most importantly,provides ultrafast interfacial ion transport pathways and extra surficial and interfacial storage sites,and thus,boosts the high-rate storage performances in SIB and PIB applications.Both the quantitatively kinetic analysis and the density functional theory(DFT)calculations revealed that the interfacial ion transport is several orders higher than that of the pristine MXenes,which delivered much enhanced Na+(536.3 mAh g^(−1)@0.1 A g^(−1))and K^(+)(305.6 mAh g^(−1)@1.0 A g^(−1))storage capabilities and excel-lent long-term cycling stability.Therefore,this work provides new insights into 2D materials engineering and low-cost,but kinetically sluggish post-Li batteries. | Junming Cao Junzhi Li Dongdong Li Zeyu Yuan Yuming Zhang Valerii Shulga Ziqi Sun Wei Han | 2021 | Nano-Micro Letters2021，13，7： | 5 |
| 17 | High-performance asymmetric electrodes photodiode based on Sb/WSe2 heterostructure显示文摘Two-dimensional (2D) van der Waals (vdWs) metal-semiconductor heterostructures with atomically sharp interface and matched work functions have recently attracted great attention due to their unique electronic and optoelectronic properties. Here we report the vapor phase epitaxial growth of large-scale vertical Sb/WSe2 metal-semiconductor vdWs heterostructures with uniform stacking orientation. Compared with the growth on S1O2/S1 substrate, the thick ness of Sb nan osheet on WSe2 can be reduced effectively to mono layer. We con struct Sb-WSe2-Au asymmetric electrodes photodiode based on the Sb/WSe2 heterostructures. Electrical transport measurements indicate that the photodiode show obvious rectifying effect. Optoelectronic characterizations show prominent photoresponse with a high photoresposivity of 364 mA/W, a fast response time of less than 8 ms, a large open-circuit voltage of 0.27 V and a maximum electrical power output of 0.11 nW. The direct growth of high-quality metal-semiconductor vdWs heterostructures may open up new realms in 2D functional electronics and optoelectronics. | Xiao Liu Guangzhuang Sun Peng Chen Junchi Liu Zhengwei Zhang Jia Li Huifang Ma Bei Zhao Ruixia Wu Weiqi Dang Xiangdong Yang Chen Dai Xuwan Tang Zhuojun Chen Lili Miao Xingqiang Liu Bo Li Yuan Liu Xidong Duan | 2019 | Nano Research2019，12，2： | 5 |
| 18 | Low-dimensional nanomaterial/Si heterostructure-based photodetectors显示文摘Due to its excellent electrical and optical features,silicon(Si)is highly attractive for photodetector applications.The design and fabrication of low-dimensional semiconductor/Si hybrid heterostructures provide a great platform for fabricating high-performance photodetectors,thereby overcoming the inherent limitations of Si.This review focuses on state-of-the-art Si heterostructure-based photodetectors.It starts with the introduction of three different device configurations,that is,photoconductors,photodiodes,and phototransistors.Their working mechanisms and relative pros and cons are introduced,and the figures of merit of photodetectors are summarized.Then,we discuss the device physics/design,photodetection performance,and optimization strategies for Si-based photodetectors.Finally,future challenges in the photodetector applications of Si-based hybrid heterostructures are discussed. | Wei Tian Haoxuan Sun Liang Chen Peihua Wangyang Xinrui Chen Jie Xiong Liang Li | 2019 | InfoMat2019，1，2： | 5 |
| 19 | Boosted electromagnetic wave absorption performance from synergistic induced polarization of SiC_(NWs)@MnO_(2)@PPy heterostructures显示文摘In the last decade,electromagnetic pollution has caused people’s considerable attention.Developing absorbing material with low cost,lightweight,simple preparation,and high electromagnetic attenuation efficiency has become a feasible means to deal with this problem.In this work,core–shell SiC_(NWs)@MnO_(2)@PPy(NWs:nanowires,PPy:polypyrrole)heterostructures composed of SiC nanowires core,MnO_(2)nanosheets inter-layer,and PPy coating were successfully prepared through chemical vapor deposition and two-step electrodeposition process.Taking advantage of the interfacial polarization and dipole polarization,the obtained product displays excellent electromagnetic wave absorption performances with the minimum reflection loss(RLmin)of−50.59 dB when the matching thickness is 2.41 mm,and the optimal effective absorption bandwidth(EAB)value reaches to 6.64 GHz at a matching thickness of 2.46 mm,revealing that the SiC_(NWs)@MnO_(2)@PPy nanocomposite could be served as a promising electromagnetic wave absorbing material.On the basis of systematic analysis concerning the electromagnetic parameters,the dissipation process of the incident electromagnetic wave was demonstrated reasonably,which may provide a referable preparation strategy for novel heterostructures,especially nonmagnetic lightweight absorbing material. | Meng Zhang Laibin Zhao Wenxin Zhao Ting Wang Liying Yuan Yuying Guo Yuxin Xie Tingting Cheng Alan Meng Zhenjiang Li | 2023 | Nano Research2023，16，2： | 4 |
| 20 | 2D hierarchical yolk-shell heterostructures as advanced host-interlayer integrated electrode for enhanced Li-S batteries显示文摘Lithium sulfur(Li-S)batteries hold great promising for high-energy-density batteries,but appear rapid capacity fading due to the lack of overall and elaborated design of both sulfur host and interlayer.Herein,we developed a novel two-dimensional(2D)hierarchical yolk-shell heterostructure,constructed by a graphene yolk,2D void and outer shell of vertically aligned carbon-mediated MoS2 nanosheets(G@void@MoS2/C),as advanced host-interlayer integrated electrode for Li-S batteries.Notably,the 2D void,with a typical thickness of^80 nm,provided suitable space for loading and confining nano sulfur,and vertically aligned ultrathin MoS2 nanosheets guaranteed enriched catalytically active sites to effectively promote the transition of soluble polysulfides.The conductive graphene yolk and carbon mediated shell sufficiently accelerated electron transport.Therefore,the integrated electrode of G@void@MoS2/C not only exceptionally confined the sulfur/polysulfides in 2D yolk-shell heterostructures,but also achieved catalytic transition of the residual polysulfides dissolved in electrolyte to solid Li2S2/Li2S,both of which synergistically achieved an extremely low capacity fading rate of 0.05%per cycle over 1000 times at 2C,outperforming most reported Mo based cathodes and interlayers for Li-S batteries.2D hierarchical yolkshell heterostructures developed here may shed new insight on elaborated design of integrated electrodes for Li-S batteries. | Yanfeng Dong Pengfei Lu Haodong Shi Jieqiong Qin Jian Chen Wencai Ren Hui-Ming Cheng Zhong-Shuai Wu | 2019 | Journal of Energy Chemistry2019，28，9： | 4 |
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