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| 1 | Design concept for electrocatalysts显示文摘Metal-based electrocatalysts with different sizes(single atoms,nanoclusters,and nanoparticles)show different catalytic behaviors for various electrocatalytic reactions.Regulating the coordination environment of active sites with precision to rationally design an efficient electrocatalyst is of great significance for boosting electrocatalytic reactions.This review summarizes the recent process of heterogeneous supported single atoms,nanoclusters,and nanoparticles catalysts in electrocatalytic reactions,respectively,and figures out the construct strategies and design concepts based on their strengths and weaknesses.Specifically,four key factors for enhancing electrocatalytic performance,including electronic structure,coordination environment,support property,and interfacial interactions are proposed to provide an overall comprehension to readers in this field.Finally,some insights into the current challenges and future opportunities of the heterogeneous supported electrocatalysts are provided. | Yao Wang Xiaobo Zheng Dingsheng Wang | 2022 | Nano Research2022，15，3： | 27 |
| 2 | A review and perspective on molybdenum-based electrocatalysts for hydrogen evolution reaction显示文摘Water electrolysis has been considered as a sustainable way for producing renewable energy of hydrogen.However,this process requires a low-cost and high-efficient hydrogen evolution reaction(HER)catalyst to improve the overall reaction efficiency.Molybdenum(Mo)-based electrocatalysts are regarded as the promising candidates to replace the benchmark but expensive Ptbased HER catalysts,due to their high activity and stability in a wide pH range.In this review,we present a comprehensive and critical summary on the recent progress in the Mo-based electrodes for HER,including molybdenum alloys,molybdenum sulfides,molybdenum selenides,molybdenum carbides,molybdenum phosphides,molybdenum borides,molybdenum nitrides,and molybdenum oxides.Particular attention is mainly focused on the synthetic methods of Mo-based materials,the strategies for increasing the catalytic activity,and the relationship between structure/composition and electrocatalytic performance.Finally,the future development and perspectives of Mo-based electrocatalysts toward high HER performance are proposed. | Wei Hua Huan-Huan Sun Fei Xu Jian-Gan Wang | 2020 | Rare Metals2020，39，4： | 23 |
| 3 | Facile synthesis and superior photocatalytic and electrocatalytic performances of porous B-doped g-C_3N_4 nanosheets显示文摘As a low-cost visible-light-driven metal-free catalyst, graphitic carbon nitride(g-C_3N_4) has attracted increasing attention due to its wide applications for solar energy conversion, environmental purification,and organic photosynthesis. In particular, the catalytic performance of g-C_3N_4 can be easily modulated by modifying morphology, doping, and copolymerization. Simultaneous optimization, however, has little been achieved. Herein, a facile one-pot strategy is developed to synthesize porous B-doped g-C_3N_4 nanosheets by using H_3BO_3 and urea as the precursor during thermal polymerization. The resultant B-doped g-C_3N_4 nanosheets retain the original framework of bulk g-C_3N_4, while induce prominently enhanced visible light harvesting and narrowing band gap by 0.32 eV compared to pure g-C_3N_4. Moreover, the adsorption capacity and photodegradation kinetics of methylene blue(MB) under visible light irradiation over B-doped g-C_3N_4 nanosheets can be improved by 20.5 and 17 times, respectively. The synthesized porous B-doped g-C_3N_4 nanosheets also exhibit higher activities than pure g-C_3N_4 as bifunctional electrocatalyst for both oxygen evolution reaction(OER) and oxygen reduction reaction(ORR). The enhanced catalyst performance of porous B-doped g-C_3N_4 nanosheets stems from the strong synergistic effect originating from the larger exposed active sites generated by the exfoliation of g-C_3N_4 into nanosheets and the porous structure, as well as the better conductivity owing to B-doping. This work provides a simple, effective, and robust method for the synthesis of g-C_3N_4-based nanomaterial with superior properties to meet the needs of various applications. | Qian Yan Gui-Fang Huang Dong-Feng Li Ming Zhang An-Lian Pan Wei-Qing Huang | 2018 | Journal of Materials Science & Technology2018，34，12： | 13 |
| 4 | Investigation of cubic Pt alloys for ammonia oxidation reaction显示文摘As a promising fuel candidate,ammonia has been successtully used as anode feed in alkaline fuel cells.However,current technology in catalysts for ammonia electro-oxidation reaction(AOR)with respect to both cost and performance is inadequate to ensure large scale commercial application of direct ammonia fuel cells.Recent studies found that alloying Pt with different transition metals and controlling the morphology of catalysts can improve the AOR activity,and thus potentially can solve the cost issue.Herein,(100)-terminated Pt-M nanocubes(M=3d-transition metals Fe,Co,Ni,Zn)are synthesized via wet-chemistry method and their catalytic activities toward AOR are evaluated.The addition of Fe,Co,Ni and Zn elements can enhance the AOR activity due to decrease in oxophilicity of platinum and bifunctional mechanism.Pt-Zn exhibits the maximum mass activity and specific ativity with values of 0.41 A/mgpt and 169 mA/cm2 that are 1.6 and 1.8 times higher than Pt nanocubes,respectively.Pt-Fe,Pt-Co and PI-Ni nanocubes also ilustrate higher mass and specific activities compared to Pt nanocubes. | Yat Tung Chan Kumar Siddharth Minhua Shao | 2020 | Nano Research2020，13，7： | 10 |
| 5 | Self-supported high-entropy alloy electrocatalyst for highly efficient H_(2) evolution in acid condition显示文摘Developing non-precious catalysts as Pt substitutes for electrochemical hydrogen evolution reaction(HER)with superior stability in acidic electrolyte is of critical importance for large-scale,low-cost hydrogen production from water.Herein,we report a CoCrFeNiAl high-entropy alloy(HEA)electrocatalyst with self-supported structure synthesized by mechanical alloying and spark plasma sintering(SPS)consolidation.The HEA after HF treatment and in situ electrochemical activation for 4000 cycles of cyclic voltammetry(HF-HEAa2)presents favourable activity with overpotential of 73 mV to reach a current density of 10 mA cm^(2) and a Tafel slope of 39.7 mV dec1.The alloy effect of Al/Cr with Co/Fe/Ni at atomic level,high-temperature crystallization,as well as consolidation by SPS endow CoCrFeNiAl HEA with high stability in 0.5 M H2SO4 solution.The superior performance of HF-HEAa2 is related with the presence of metal hydroxides/oxides groups on HEA. | Peiyan Ma Mingming Zhao Long Zhang Heng Wang Junfeng Gu Yuchen Sun Wei Ji Zhengyi Fu | 2020 | Journal of Materiomics2020，6，4： | 8 |
| 6 | Adsorption-energy-based activity descriptors for electrocatalysts in energy storage applications显示文摘Energy storage technologies, such as fuel cells, ammonia production and lithium–air batteries, are important strategies for addressing the global challenge of energy crisis and environmental pollution.Taking overpotential as a direct criterion, we illustrate in theory and experiment that the adsorption energies of charged species such as Li^++e^-and H^++e^-are a central parameter to describe catalytic activities related to electricity-in/electricity-out efficiencies. The essence of catalytic activity is revealed to relate with electronic coupling between catalysts and charged species. Based on adsorption energy, some activity descriptors such as d-band center, e_g-electron number and charge-transfer capacity are further defined by electronic properties of catalysts that directly affect interaction between catalysts and charged species. The present review is helpful for understanding the catalytic mechanisms of these electrocatalytic reactions and developing accurate catalytic descriptors, which can be employed to screen high-activity catalysts in future high-throughput calculations and experiments. | Youwei Wang Wujie Qiu Erhong Song Feng Gu Zhihui Zheng Xiaolin Zhao Yingqin Zhao Jianjun Liu Wenqing Zhang | 2018 | National Science Review2018，5，3： | 8 |
| 7 | In situ construction of porous hierarchical(Ni3-xFex)FeN/Ni heterojunctions toward efficient electrocatalytic oxygen evolution显示文摘As a choke point in water electrolysis,the oxygen evolution reaction(OER)suffers from the severe electrode polarization and large overpotential.Herein,the porous hierarchical hetero-(Nis Fe)FeN/Ni catalysts are in situ constructed for the eficient electrocatalytic OER.X-ray absorption fine structure characterizations reveal the strong Ni-Fe bimetallic interaction in(Niz Fex)FeN/Ni.Theoretical study indicates the heterojunction and bimetallic interaction decrease the free-energy change for the rate-limiting step of the OER and the overpotential thereof.In addition,the high conductivity and porous hierarchical morphology favor the electron transfer,electrolyte access and O2 release.Consequently,the optimized catalyst achieves a low overpotential of 223 mV at 10 mA.cm^-2,a small Tafel slope of 68 mV:dec^-1,and a high stability.The excellent performance of the optimized catalyst is also demonstrated by the overall water electrolysis with a low working voltage and high Faradaic efficiency.Moreover,the correlation between the structure and performance is well established by the experimental characterizations and theoretical calculations,which confirms the origin of the OER activity from the surface metal oxyhydroxide in situ generated upon applying the current.This study suggests a promising approach to the advanced OER electrocatalysts for practical applications by constructing the porous hierarchical metal-compound/metal heterojunctions. | Minglei Yan Kun Mao Peixin Cui Chi Chen Jie Zhao Xizhang Wang Lijun Yang Hui Yang Qiang Wu Zheng Hu | 2020 | Nano Research2020，13，2： | 8 |
| 8 | Non‑noble Metal Electrocatalysts for the Hydrogen Evolution Reaction in Water Electrolysis显示文摘Water electrolysis is a sustainable approach for hydrogen production by using electricity from clean energy sources.However,both the hydrogen evolution reaction(HER)and the oxygen evolution reaction(OER)associated with water electrolysis are kinetically sluggish,leading to low efficiency in corresponding electrolysis devices.In addition,current electrocatalysts that can catalyze both HER and OER to practical rates require noble metals such as platinum that are low in abundance and high in price,severely limiting commercialization.As a result,the development of high-performance and cost-effective non-noble metal electrocatalysts to replace noble ones has intensified.Based on this,this review will comprehensively present recent research in the design,synthesis,characterization and performance validation/optimization of non-noble metal HER electrocatalysts and analyze corresponding catalytic mechanisms.Moreover,several important types of non-noble metal electrocatalysts including zero-dimensional,one-dimensional,two-dimensional and three-dimensional materials are presented with an emphasis on morphology/structure,synergetic interaction between metal and support,catalytic property and HER activity/stability.Furthermore,existing technical challenges are summarized and corresponding research directions are proposed toward practical application. | Huimin Wu Chuanqi Feng Lei Zhang Jiujun Zhang David P.Wilkinson | 2021 | Electrochemical Energy Reviews2021，4，3： | 7 |
| 9 | Advances in engineering RuO_(2) electrocatalysts towards oxygen evolution reaction显示文摘Water electrolysis technology holds the perfect promise of the hydrogen production,yet control of efficiency and rate of water electrolysis greatly relies on the availability of high-performance electrode materials for kinetic-sluggish oxygen evolution reaction(OER).Accordingly,substantial endeavors have been made to explore advanced electrode materials over the past decade.Recently,RuO_(2) and RuO_(2)-based materials have been demonstrated to be promising for OER due to their remarkable electrocatalytic activity and pH-universal application.Herein,the great achievements and progresses of this flourishing spot are comprehensively reviewed,which are started by a general description of OER to understand the reaction mechanism in detail.Subsequently,the key advantages and issues of RuO_(2) towards OER are also introduced,followed by proposing many advanced strategies for further promoting the electrocatalytic OER performance of RuO_(2).Finally,the daunting challenges and future progresses of RuO_(2) electrocatalysts toward practical water oxidation are highlighted,aiming to provide guidance for the fabrication of desirable RuO_(2)-based electrocatalysts toward OER. | Cheng Wang Liujun Jin Hongyuan Shang Hui Xu Yukihide Shiraishi Yukou Du | 2021 | Chinese Chemical Letters2021，32，7： | 6 |
| 10 | Microwave sintered porous CoCrFeNiMo high entropy alloy as an efficient electrocatalyst for alkaline oxygen evolution reaction显示文摘Developing efficient,stable and economical electrocatalyst for oxygen evolution reaction(OER)is a significant pathway to produce clean energy from water splitting.Herein,the promising and highly efficient porous CoCrFeNiMo high entropy alloys(HEAs)were prepared by microwave sintering using Mg space holder.Owing to unique properties of high entropy alloys and abundant active surface area,the porous CoCrFeNiMo-20 Mg exhibits excellent catalytic performance and prominent electrochemical stability with a low overpotential of 220 mV to reach current density of 10 mA cm^(-2),a small Tafel slope of 59.0 mV dec^(-1) and long-term durability for 24 h in 1.0 M KOH.The results of microstructure and element states indicate that crystal defects,porous structure and villous hydroxides are the reasons for high OER performance of the CoCrFeNiMo.This work not only provides a new way to prepare electrocatalysts,but also proves the important application of high entropy alloys in functional materials. | J.Tang J.L.Xu Z.G.Ye X.B.Li J.M.Luo | 2021 | Journal of Materials Science & Technology2021，，20： | 5 |
| 11 | Rational design of phosphorus-doped cobalt sulfides electrocatalysts for hydrogen evolution显示文摘Moderate anionic doping is an effective approach to improve the performance of electrocatalysts toward hydrogen evolution reaction(HER)since it can adjust the electronic structure,activesite,and phase.The reported studies mainly focus on designing P doped C0S2,while otherphases of cobalt sulfide,such as Co1-xS and Co9S8 doped with P are rarely investigated for HER electrocatalysts.Herein,various cobalt sulfides(including CoSg/Co1-xS,Co1-xS,and Co9S8)doped with P are anchored on carbon cloth through a facile hydrothermal method.Among tested electrocatalysts,P doped Co1-xS exhibits excellent electrocatalytic performance with an overpotential of 110 and 165 mV(vs.RHE)for currentdensities of 10 and 100 mA·cm^-2,respectively.Density functional theory calculations reveal that P doped Co1-xS possesses a smaller bandgapand more optimal hydrogen adsorption sites than pristine Co1-xS.This work initially investigates various cobalt sulfides doped with P and furthergets in sight into the activity improvement mechanism of P dopi ng,which could guide the desig n of earth-abunda nt HER electrocatalysts for the'hydrogen economy'. | Guoxing Qu Tianli Wu Yanan Yu Zekang Wang Yang Zhou Zhendong Tang Qin Yue | 2019 | Nano Research2019，12，12： | 5 |
| 12 | An option for green and sustainable future: Electrochemical conversion of ammonia into nitrogen显示文摘Green and sustainable options are needed to ease the current energy and environmental crisis, and alleviate the greenhouse effect and energy shortage. As an alternative carbon–neutral synthetic fuel, ammonia shows great potential due to its high energy density, non-toxic by-products, and mature related infrastructures. However, related practical applications have been severely hampered on ammoniaoxidation due to the high cost of catalysts and immature energy utilization systems. Here, we comprehensively summarized the efforts which have been made in recent years with the aim of providing a deep sight into the development and deficiencies in this territory and trying to establish a simple framework of basic knowledge for researchers. The exploration of mechanism is discussed first and then the relevant catalysts studied in recent years are summarized. Besides, the progress of direct ammonia fuel cells(DAFCs) is also presented and the challenges as well as perspectives on future developments of electrocatalysts for ammonia electro-oxidation and its practical application are provided at the end. | Bo Zhou Nana Zhang Yujie Wu Weijun Yang Yanbing Lu Yanyong Wang Shuangyin Wang | 2021 | Journal of Energy Chemistry2021，30，9： | 5 |
| 13 | Boride-based electrocatalysts:Emerging candidates for water splitting显示文摘Electrocatalytic water splitting(EWS)is a promising route to produce hydrogen in a sustainable and environment-benign manner.To realize the large-scale hydrogen production,it is paramount to develop desirable electrocatalysts with engineered structure,high catalytic activity,facile accessibility,low cost,and good durability.Of late,boride-based materials,especially transition-metal borides(TMBs),are emerging as promising candidates for the EWS process.However,so far,ittle attempt has been made to provide a comprehensive summary on these findings.Herein,this review provides the up-to-date status on upgrading the catalytic performance of TMB-based nanomaterials by regulating the internal and external characteristics.The conventional synthetic techniques are first presented for the preparation of TMB-based catalysts.Afterwards,the advanced strategies are summarized to enhance the catalytic performance of TMBs,including morphology control,component regulation,phase engineering,surface oxidation and hybridization.Then,the design principles of TMB-based electrocatalysts for high-performance EWS are outined.Lastly,the current challenges and future directions in the development of TMB-based materials are proposed.This review article is expected to envisage insights into the TMBs-based water splitting and to provide strategies for design of the next-generation TMB-based electrocatalysts. | ZhiJie Chen Xiaoguang Duan Wei Wei Shaobin Wang Zejie Zhang Bing-Jie Ni | 2020 | Nano Research2020，13，2： | 5 |
| 14 | Atomically thin defect-rich Ni-Se-S hybrid nanosheets as hydrogen evolution reaction electrocatalysts显示文摘Facile design of economic-effective hydrogen evolution reaction(HER)catalysts with non-noble materials are promising for the production of renewable chemical fuels.Two-dimensional(2D)ultrathin transition metal dichalcogenides(TMDs)materials with large specific surface area and abundant catalytic active sites can significantly enhance their catalytic activities.Herein,we design and synthesize an atomically thin Ni-Se-S based hybrid nanosheet(NiSe1.2S0.8)via a simple solvothermal method,the thickness of NiSe1.2S0.8 nanosheets is only about 1.1 nm.Benefiting from the ultrathin nanostructure and rich defects,the optimal NiSe1.2S0.8 exhibits good electrocatalytic activity with the overpotential of 144 mV at−10 mA·cm−2,a small Tafel slope of 59 mV·dec−1,and outstanding catalytic stability in acid electrolyte for HER.The theoretical results show that hybrid electrocatalyst by S incorporation possesses the optimal adsorption free energy of hydrogen(ΔGH*).This study provides a simple method to synthesize a highperformance multicomponent electrocatalysts with the ultrathin nanostructures and abundant defects. | Jianpeng Sun Xiangting Hu Zhaodi Huang Tianxiang Huang Xiaokang Wang Hailing Guo Fangna Dai Daofeng Sun | 2020 | Nano Research2020，13，8： | 5 |
| 15 | Ternary mesoporous cobalt-iron-nickel oxide efficiently catalyzing oxygen/hydrogen evolution reactions and overall water splitting显示文摘Among various efficient electrocatalysts for water splitting,CoFe and NiFe-based oxides/hydroxides are typically promising candidates thanks to their extraordinary activities towards oxygen evolution reaction (OER).However,the endeavor to advance their performance towards overall water splitting has been largely impeded by the limited activities for hydrogen evolution reaction (HER).Herein,we present a CoFeNi ternary metal-based oxide (CoFeNi-O) with impressive hierarchical bimodal channel nanostructures,which was synthesized via a facile one-step dealloying strategy.The oxide shows superior catalytic activities towards both HER and OER in alkaline solution due to the alloying effect and the intrinsic hierarchical porous structure.CoFeNi-O loaded on glass carbon electrodes only requires the overpotentials as low as 230 and 278 mV to achieve the OER current densities of 10 and 100 mA·cm-2,respectively.In particular,extremely low overpotentials of 200 and 57.9 mV are sufficient enough for Ni foam-supported CoFeNi-O to drive the current density of 10 mA·cm-2 towards OER and HER respectively,which is comparable with or even better than the already-developed state-of-the-art non-noble metal oxide based catalysts.Benefiting from the bifunctionalities of CoFeNi-O,an alkaline electrolyzer constructed by the Ni foam-supported CoFeNi-O electrodes as both the anode and the cathode can deliver a current density of 10 mA·cm-2 at a fairly low cell-voltage of 1.558 V.In view of its electrocatalytic merits together with the facile and cost-effective dealloying route,CoFeNi-O is envisioned as a promising catalyst for future production of sustainable energy resources. | Lulu Han Limin Guo Chaoqun Dong Chi Zhang Hui Gao Jiazheng Niu Zhangquan Peng Zhonghua Zhang | 2019 | Nano Research2019，12，9： | 5 |
| 16 | PROGRESS IN STUDIES OF ELECTROCATALYSTS AND DOPED CARBON ANODES IN ALUMINIUM ELECTROLYSIS CELLS显示文摘PROGRESSINSTUDIESOFELECTROCATALYSTSANDDOPEDCARBONANODESINALUMINIUMELECTROLYSISCELLSPROGRESSINSTUDIESOFELECTROCATALYSTSANDDOPE... | Liu,Yexiang Wang,Xiangmin Huang,YongzhongWang,Huazhang Yang,Jianhong(Department of Nonferrous Metallurgy, Central South University of Technology,Changsha 410083) | 1994 | 中国有色金属学会会刊:英文版1994，4，2： | 4 |
| 17 | Surface Oxidation of Single-walled-carbon-nanotubes with Enhanced Oxygen Electroreduction Activity and Selectivity显示文摘Electrochemical oxygen reduction reaction(ORR) with 2-electron process is an alternative for decentralized H_(2)O_(2) production, but it remains high challenging to develop highly active and selective catalysts for this process. In this work, we present a selective and efficient nonprecious electrocatalyst, prepared through an easily scalable mild oxidation of single-walled carbon nanotubes(SWNTs) with different oxidative acids including sulfur acid, nitride acid and mixed sulfuric/nitric acids, respectively. The high-degree oxidized SWNTs treated by mixed acids exhibit the highest activity and selectivity of electroreduction of oxygen to synthesize H_(2)O_(2) at low overpotential in alkaline and neutral media. Spectroscopic characterizations suggested that the C–O is vital for catalyzing 2-electron ORR, providing an insightful understanding of defected carbon surface as the active catalytic sites for 2-electron ORR. | 崔亚琪 许交兴 王美琳 官轮辉 | 2021 | Chinese Journal of Structural Chemistry2021，40，5： | 4 |
| 18 | Photocatalytic and Electrocatalytic Generation of Hydrogen Peroxide: Principles, Catalyst Design and Performance显示文摘Hydrogen peroxide(H_(2)O_(2)) is a high-demand organic chemical reagent and has been widely used in various modern industrial applications. Currently,the prominent method for the preparation of H_(2)O_(2) is the anthraquinone oxidation.Unfortunately, it is not conducive to economic and sustainable development since it is a complex process and involves unfriendly environment and potential hazards. In this context, numerous approaches have been developed to synthesize H_(2)O_(2). Among them, photo/electro-catalytic ones are considered as two of the most promising manners for on-site synthesis of H_(2)O_(2). These alternatives are sustainable in that only water or O_(2) is required. Namely, water oxidation(WOR) or oxygen reduction(ORR)reactions can be further coupled with clean and sustainable energy. For photo/electro-catalytic reactions for H_(2)O_(2) generation, the design of the catalysts is extremely important and has been extensively conducted with an aim to obtain ultimate catalytic performance. This article overviews the basic principles of WOR and ORR,followed by the summary of recent progresses and achievements on the design and performance of various photo/electro-catalysts for H_(2)O_(2) generation. The related mechanisms for these approaches are highlighted from theoretical and experimental aspects. Scientific challenges and opportunities of engineering photo/electro-catalysts for H_(2)O_(2) generation are also outlined and discussed. | Yan Guo Xili Tong Nianjun Yang | 2023 | Nano-Micro Letters2023，15，6： | 4 |
| 19 | A review on theoretical models for lithium-sulfur battery cathodes显示文摘Lithium–sulfur(Li–S)batteries have been considered as promising battery systems due to their huge advantages on theoretical energy density and rich resources.However,the shuttle effect and sluggish transformation of soluble lithium polysulfides(LiPSs)hinder the practical application of Li–S batteries.Tremendous sulfur host materials with unique catalytic activity have been exploited to inhibit the shuttle effect and accelerate LiPSs redox reactions,in which theoretical simulations have been widely adopted.This review aims to summarize the fundamentals and applications of theoretical models in sulfur cathodes.Concretely,the integration of theoretical models provides insights into the adsorption and conversion mechanisms of LiPSs and is further utilized in the smart design of catalysts for the exploitation of practical Li–S batteries.Finally,a perspective on the future combination of calculation technology and theoretical models is provided. | Shuai Feng Zhong-Heng Fu Xiang Chen Qiang Zhang | 2022 | InfoMat2022，4，3： | 4 |
| 20 | Rational design of hierarchically porous Fe-N-doped carbon as efficient electrocatalyst for oxygen reduction reaction and Zn-air batteries显示文摘The rational design and construction of hierarchically porous nanostructure for oxygen reduction reaction (ORR) electrocatalysts is crucial to facilitate the exposure of accessible active sites and promote the mass/electron transfer under the gas-solid-liquid triple-phase condition. Herein, an ingenious method through the pyrolysis of creative polyvinylimidazole coordination with Zn/Fe salt precursors is developed to fabricate hierarchically porous Fe-N-doped carbon framework as efficient ORR electrocatalyst. The volatilization of Zn species combined with the nanoscale Kirkendall effect of Fe dopants during the pyrolysis build the hierarchical micro-, meso-, and macroporous nanostructure with a high specific surface area (1,586 m^(2)·g^(−1)), which provide sufficient exposed active sites and multiscale mass/charge transport channels. The optimized electrocatalyst exhibits superior ORR activity and robust stability in both alkaline and acidic electrolytes. The Zn-air battery fabricated by such attractive electrocatalyst as air cathode displays a higher peak power density than that of Pt/C-based Zn-air battery, suggesting the great potential of this electrocatalyst for Zn-air batteries. | Zihan Meng Neng Chen Shichang Cai Jiawei Wu Rui Wang Tian Tian Haolin Tang | 2021 | Nano Research2021，14，12： | 4 |
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