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| 1 | 用于现场老化交联聚乙烯电力电缆的降解评估参数(英文)显示文摘The cables are more likely to deteriorate after several years of service in Shanghai,a city with a humid climate and abundant rainfall.Before assessing the aging status of those cables,it is critical to present effective test parameters which are sensitive to the aging process under special field conditions.Therefore,we have performed water tree investigation,tensile test,and differential scanning calorimetry(DSC)test on hundreds of cable samples removed from service.A large number of typical bowtie water trees were found in cable insulation and the water tree content was proposed to characterize the degree of water treeing.Based on Arrhenius Equation and equivalent thermal history parameters estimated from DSC profiles,we also proposed a new parameter ln(t/τθ)to characterize the aging status of cable insulation,Where,t is treated duration andτθis the thermal life under treated temperature.The applicabilities of water tree content,tensile strength,and ln(t/τθ)are tested using the analysis of variance(ANOVA).Then we investigated the relationship between the tensile strength and the water tree content using regression analysis,and analyzed the relationship between ln(t/τθ)and the tensile strength.The results indicated that each of these parameters performs differently with cables which experienced different degrees of age related degradation,and can be used to identify the aging status of field aged cables.The tensile strength can reflect the water treeing condition of field aged cables very well as a commonly used functional parameter.Since ln(t/τθ)is strongly related to the tensile strength,it is an effective parameter to characterize the aging status of field aged cable insulation.Using this newly proposed parameter is more time saving because of the convenience in sampling. | LIU Fei JIANG Pingkai LEI Qingquan ZHANG Li | 2015 | 高电压技术2015，41，4： | 7 |
| 2 | Dielectric polymer based electrolytes for high-performance all-solid-state lithium metal batteries显示文摘Solid polymer electrolytes (SPEs) are urgently required for achieving practical all-solid-state lithium metal batteries (ASSLMBs) but remain plagued by low ionic conductivity.Herein,we propose a strategy of salt polarization to fabricate a highly ion-conductive SPE by employing a high-dielectric polymer that can interact strongly with lithium salts.Such a polymer with large dipole moments can guide lithium cations (Li^(+)) to be arranged along the chain,forming a continuous pathway for Li^(+) hopping within the SPE.The as-fabricated SPE,poly(vinylidene difluoride)(PVDF)-LiN(SO_(2)F)_(2)(LiFSI),has an extraordinarily high dielectric constant (up to 10^(8)) and ultrahigh ionic conductivity (0.77×10^(-3)S cm^(-1)).Based on the PVDF–LiFSI SPE,the assembled Li metal symmetrical cell shows excellent Li plating/stripping reversibility at 0.1 m A cm^(-2),0.1 m Ah cm^(-2)over 1500 h^(-1) the ASS LiFePO_(4) batteries deliver long-term cycling stability at 1 C over 350 cycles (2.74 mg cm^(-2)) and an ultralong cycling lifespan of over 2600 h(100 cycles) with high loading (11.5 mg cm^(-2)) at 28°C.First-principles calculations further reveal the ion-dipole interactions-controlled conduction of Li^(+) in PVDF–LiFSI SPE along the PVDF chain.This work highlights the critical role of dielectric permittivity in SPE,and provides a promising path towards high-energy,long-cycling lifespan ASSLMBs. | Qi Kang Yong Li Zechao Zhuang Dingsheng Wang Chunyi Zhi Pingkai Jiang Xingyi Huang | 2022 | Journal of Energy Chemistry2022，31，6： | 7 |
| 3 | Rapid, high-efficient and scalable exfoliation of high-quality boron nitride nanosheets and their application in lithium-sulfur batteries显示文摘Boron nitride nanosheets(BNNSs)have gained significant attraction in energy and environment fields because of their two-dimensional(2D)nature,large band gap and high thermal/mechanical performance.However,the current low production efficiency of high-quality BNNSs is still a bottleneck limiting their applications.Herein,based on sonication-assisted liquid-phase exfoliation,we demonstrated a rapid,high-efficient and scalable production strategy of BNNSs and documented the effects of a spectrum of exfoliation factors(e.g.,ultrasonic condition,solvent and bulk material feeding)on the yield of BNNSs.A record of yield of 72.5%was achieved while the exfoliated BNNSs have few-layer and defect-free feature.Thanks to the Lewis acid sites of the boron atoms,the BNNSs can interact with the polysulfide anions in liquid electrolyte and also can facilitate the uniform lithium deposition,which finally endow a lithium-sulfur(Li-S)battery with long life.This work provides a facile and rapid strategy for large scale preparation of high-quality BNNSs,also contributes a long-life strategy for dendrite-free Li-S battery,opens new avenues of BNNSs in energy application. | Yu Chen Qi Kang Pingkai Jiang Xingyi Huang | 2021 | Nano Research2021，14，7： | 7 |
| 4 | Spider Web‑Inspired Graphene Skeleton‑Based High Thermal Conductivity Phase Change Nanocomposites for Battery Thermal Management显示文摘Phase change materials(PCMs)can be used for efficient thermal energy harvesting,which has great potential for cost-effective thermal management and energy storage.However,the low intrinsic thermal conductivity of polymeric PCMs is a bottleneck for fast and efficient heat harvesting.Simultaneously,it is also a challenge to achieve a high thermal conductivity for phase change nanocomposites at low filler loading.Although constructing a three-dimensional(3D)thermally conductive network within PCMs can address these problems,the anisotropy of the 3D framework usually leads to poor thermal conductivity in the direction perpendicular to the alignment of fillers.Inspired by the interlaced structure of spider webs in nature,this study reports a new strategy for fabricating highly thermally conductive phase change composites(sw-GS/PW)with a 3D spider web(sw)-like structured graphene skeleton(GS)by hydrothermal reaction,radial freeze-casting and vacuum impregnation in paraffin wax(PW).The results show that the sw-GS hardly affected the phase transformation behavior of PW at low loading.Especially,sw-GS/PW exhibits both high cross-plane and in-plane thermal conductivity enhancements of~1260%and~840%,respectively,at an ultra-low filler loading of 2.25 vol.%.The thermal infrared results also demonstrate that sw-GS/PW possessed promising applications in battery thermal management. | Ying Lin Qi Kang Han Wei Hua Bao Pingkai Jiang Yiu‑Wing Mai Xingyi Huang | 2021 | Nano-Micro Letters2021，13，11： | 5 |
| 5 | Ultrathin MXene-aramid nanofiber electromagnetic interference shielding films with tactile sensing ability withstanding harsh temperatures显示文摘Ultrathin and flexible electromagnetic shielding materials hold great potential in civil and military applications.Despite tremendous research efforts,the development of advanced shielding materials is still needed to provide additional functionalities for various artificial-intelligence-driven systems,such as tactile sensing ability.Herein,a layering design strategy is proposed to fabricate ultrathin Ti_(3)C_(2)T_(x)MXene-aramid nanofiber(MA)films by a layer-by-layer assembling process.Compared to that of randomly mixed films,the designed MA films exhibited a higher EMI shielding efficiency at an ultrathin thickness of 9 pm,which increased from 26.4 to 40.7 dB,owing to the additional multiple-interface scattering mechanism.Importantly,the novel MA films displayed strong EMI shielding ability even after heating/cooling treatments within a wide temperature range of-196 to 300℃.Moreover,the same material displayed a tensile strength of 124.1±2.7 MPa and a toughness of 6.3±1.1 MJ·m^(-3),which are approximately 9.1 times and 45 times higher than those of pure MXene films,respectively.The MA film is also capable of detecting tactile signals via the triboelectric effect.A 2×4 tactile sensor array was developed to achieve an accurate signal catching capability.Therefore,in addition to the shielding performance,the manifestation of tactile perception by the MA films offers exciting opportunities in the fields of soft robotics and human-machine interactions. | Dawei Hu Siqi Wang Cheng Zhang Pengshu Yi Pingkai Jiang Xingyi Huang | 2021 | Nano Research2021，14，8： | 4 |
| 6 | Manipulating dielectric property of polymer coatings toward highretention-rate lithium metal full batteries under harsh critical conditions显示文摘Lithium(Li)metal batteries(LMBs)can potentially deliver much higher energy density but remain plagued by uncontrollable Li plating with dendrite growth,unstable interfaces,and highly abundant excess Li(>50 mAh·cm^(-2)).Herein,different from the artificial layer or three-dimensional(3D)matrix host constructions,various dielectric polymers are initially well-comprehensively investigated from experimental characterizations to theoretical simulation to evaluate their functions in modulating Li ion distribution.As a proof of concept,a 3D interwoven high dielectric functional polymer(HDFP)nanofiber network with polar C-F dipole moments electrospun on copper(Cu)foil is designed,realizing uniform and controllable Li deposition capacity up to 5.0 mAh·cm^(-2),thereby enabling stable Li plating/stripping cycling over 1400 h at 1.0 mA·cm^(-2).More importantly,under the highcathode loading(~3.1 mAh·cm^(-2))and only 0.6×excess Li(N/P ratio of 1.6),the full cells retain capacity retention of 97.4%after 200 cycles at 3.36 mA·cm^(-2)and achieve high energy density(297.7 Wh·kg^(-1)at cell-level)under lean electrolyte conditions(15μL),much better than ever-reported literatures.Our work provides a new direction for designing high dielectric polymer coating toward high-retention-rate practical Li full batteries. | Qi Kang Zechao Zhuang Yong Li Yinze Zuo Jian Wang Yijie Liu Chaoqun Shi Jie Chen Hongfei Li Pingkai Jiang Xingyi Huang | 2023 | Nano Research2023，16，7： | 3 |
| 7 | Dielectric phenomena and electrical energy storage of poly(vinylidene fluoride) based high-k polymers显示文摘Polymeric dielectrics have wide range of applications in the field of electrical energy storage because of their light weight and easy processing. However, the state-of-the-art polymer dielectrics, such as biaxially orientated polypropylene, could not meet the demand of minimization of electronic devices because of its low energy density. Recently, poly(vinylidene fluoride)(PVDF) based ferroelectric polymers have attracted considerable interests for energy storage applications because of their high permittivity and high breakdown strength. Unfortunately, the high dielectric loss and/or high remnant polarization of PVDF-based polymers seriously limits their practical applications for electrical energy storage. Since the discovery of relaxor ferroelectric behavior was firstly reported in irradiated poly(vinylidene fluoridetrifluoroethylene)(P(VDF-TrFE)) copolymer, many strategies have been developed to enhanced the electrical energy storage capability, including copolymerization, grafting, blending and fabricating of multilayer. How these methods affect the polymorphs, crystallinity, crystal size of PVDF-based polymers and the connection between these microstructures and their corresponding energy storage properties are discussed in detail. | Yingke Zhu Pingkai Jiang Zhicheng Zhang Xingyi Huang | 2017 | Chinese Chemical Letters2017，28，11： | 2 |
| 8 | Flexible,Highly Thermally Conductive and Electrically Insulating Phase Change Materials for Advanced Thermal Management of 5G Base Stations and Thermoelectric Generators显示文摘Thermal management has become a crucial problem for high-power-density equipment and devices.Phase change materials(PCMs)have great prospects in thermal management applications because of their large capacity of heat storage and isothermal behavior during phase transition.However,low intrinsic thermal conductivity,ease of leakage,and lack of flexibility severely limit their applications.Solving one of these problems often comes at the expense of other performance of the PCMs.In this work,we report core–sheath structured phase change nanocomposites(PCNs)with an aligned and interconnected boron nitride nanosheet network by combining coaxial electrospinning,electrostatic spraying,and hot-pressing.The advanced PCN films exhibit an ultrahigh thermal conductivity of 28.3 W m^(-1)K^(-1)at a low BNNS loading(i.e.,32 wt%),which thereby endows the PCNs with high enthalpy(>101 J g^(-1)),outstanding ductility(>40%)and improved fire retardancy.Therefore,our core–sheath strategies successfully balance the trade-off between thermal conductivity,flexibility,and phase change enthalpy of PCMs.Further,the PCNs provide powerful cooling solutions on 5G base station chips and thermoelectric generators,displaying promising thermal management applications on high-power-density equipment and thermoelectric conversion devices. | Ying Lin Qi Kang Yijie Liu Yingke Zhu Pingkai Jiang Yiu‑Wing Mai Xingyi Huang | 2023 | Nano-Micro Letters2023，15，3： | 2 |
| 9 | Highly conductive polymer nanocomposites for emerging high voltage power cable shields:experiment,simulation and applications显示文摘High voltage power cables play a critical role in global electricity transmission and distribution.The currently used power cables cannot fulfil the green and sustainable requirement of modern society because of the thermoset nature of cable insulation and shields.This study is aimed at developing thermoplastic shields for high voltage power cable,which is one bottleneck restricting the development of environmental-friendly cables.Using carbon black(CB)as the main conductive component and a small amount of carbon nanotubes(CNTs)or graphene as the second filler,highly conductive polypropylene based composite materials were prepared for potential shield applications.It was found that,at a fixed conductive filler loading,the replacement of a small amount CB by CNTs can significantly enhance the electrical conductivity and suppress its temperature dependence.However,when CB was replaced by graphene,only limited enhancement of electrical conductivity could be achieved and the electrical conductivity is still highly dependent on temperature.Dissipative particle dynamics simulations demonstrated that the enhanced conduction property in the CNTs-containing composites could be understood by the shorter average distance between CB and CNTs.Finally,the coordination between the newly developed conductive composites and the environmental-friendly thermoplastic polypropylene insulation was evaluated via high voltage direct current measurements,and the results revealed that the CNTs-containing composites showed excellent suppression effect on the space charge injection and accumulation in the insulation.This research paved a new way for developing environmental-friendly high voltage power cable shields. | Xingyi Huang Boyang Sun Chunyang Yu Jiandong Wu Jun Zhang Pingkai Jiang | 2020 | High Voltage2020，5，4： | 2 |
| 10 | High Conduction Band Inorganic Layers for Distinct Enhancement of Electrical Energy Storage in Polymer Nanocomposites显示文摘Dielectric polymer nanocomposites are considered as one of the most promising candidates for high-power-density electrical energy storage applications.Inorganic nanofillers with high insulation property are frequently introduced into fluoropolymer to improve its breakdown strength and energy storage capability.Normally,inorganic nanofillers are thought to introducing traps into polymer matrix to suppress leakage current.However,how these nanofillers effect the leakage current is still unclear.Meanwhile,high dopant(>5 vol%)is prerequisite for distinctly improved energy storage performance,which severely deteriorates the processing and mechanical property of polymer nanocomposites,hence brings high technical complication and cost.Herein,boron nitride nanosheet(BNNS)layers are utilized for substantially improving the electrical energy storage capability of polyvinylidene fluoride(PVDF)nanocomposite.Results reveal that the high conduction band minimum of BNNS produces energy barrier at the interface of adjacent layers,preventing the electron in PVDF from passing through inorganic layers,leading to suppressed leakage current and superior breakdown strength.Accompanied by improved Young’s modulus(from 1.2 GPa of PVDF to 1.6 GPa of nanocomposite),significantly boosted discharged energy density(14.3 J cm^(-3)) and charge-discharge efficiency(75%)are realized in multilayered nanocomposites,which are 340 and 300% of PVDF(4.2 J cm^(-3),25%).More importantly,thus remarkably boosted energy storage performance is accomplished by marginal BNNS.This work offers a new paradigm for developing dielectric nanocomposites with advanced energy storage performance. | Yingke Zhu Zhonghui Shen Yong Li Bin Chai Jie Chen Pingkai Jiang Xingyi Huang | 2022 | Nano-Micro Letters2022，14，9： | 2 |
| 11 | Morphology,thermal and di-electric behaviors of cycloaliphatic epoxy/trimethacrylate IPNs for VPI electrical insulation显示文摘 | Duan Jingkuan Kim C Jiang Pingkai | 2008 | J Appl Polym Sci2008，110，5： | 1 |
| 12 | Synthesis of a Novel Hybrid Synergistic Flame Retardant and Its Appli- cation in PP/IFR 显示文摘 | Yong Qian Ping Wei Pingkai Jiang | 2011 | Polymer Degradation and Stability2011，96，6： | 1 |
| 13 | Removal of Cr(III), Ni(II) and Cu(II) by poly( γ -glutamic acid) from Bacillus subtilis NX-2显示文摘 | Jun Yao Hong Xu Jun Wang Min Jiang Pingkai Ouyang | 2007 | Journal of Biomaterials Science, Polymer Edition2007，，2： | 1 |
| 14 | Polyhedral oligosilsesuioxane-modified boron nitride nanotube based epoxy nanocmnposites: an ideal dielectric material with high thermal conductivity显示文摘 | Huang Xingyi Zhi Chunyi Jiang Pingkai | 2013 | Adv Fun Mater2013，23，14： | 1 |
| 15 | An Investi- gation on the flammability of halogen-free fire retardant PP- APP-EG systems 显示文摘 | WEI Ping LI Haixing JIANG Pingkai | 2004 | J Fire Sei2004，22，5： | 1 |
| 16 | Synthesis, characteristic of a novel additive-type flame retardant containing silicon and its application in PC/ABS alloy显示文摘 | Hanfang Zhong Dan Wu Ping Wei Pingkai Jiang Qiang Li Jianwei Hao | 2007 | Journal of Materials Science2007，，24： | 1 |
| 17 | Insulation Diagnosis of Service Aged XLPE Power Cables Using Statistical Analysis and Fuzzy Inference显示文摘Cables that have been in service for over 20 years in Shanghai, a city with abundant surface water, failed more frequently and induced different cable accidents. This necessitates researches on the insulation aging state of cables working in special circumstances. We performed multi-parameter tests with samples from about 300 cable lines in Shanghai. The tests included water tree investigation, tensile test, dielectric spectroscopy test, thermogravimetric analysis (TGA), fourier transform infrared spectroscopy (FTIR), and electrical aging test. Then, we carried out regression analysis between every two test parameters. Moreover, through two-sample t-Test and analysis of va- riance (ANOVA) of each test parameter, we analyzed the influences of cable-laying method and sampling section on the degradation of cable insulation respectively. Furthermore, the test parameters which have strong correlation in the regression analysis or significant differ- ences in the t-Test or ANOVA analysis were determined to be the ones identifying the XLPE cable insulation aging state. The thresholds for distinguishing insulation aging states had been also obtained with the aid of statistical analysis and fuzzy clustering. Based on the fuzzy in- ference, we established a cable insulation aging diagnosis model using the intensity transfer method. The results of regression analysis indicate that the degradation of cable insulation accelerates as the degree of in-service aging increases. This validates the rule that the in- crease of microscopic imperfections in solid material enhances the dielectric breakdown strength. The results of the two-sample t-Test and the ANOVA indicate that the direct-buried cables are more sensitive to insulation degradation than duct cables. This confirms that the tensile strength and breakdown strength are reliable functional parameters in cable insulation evaluations. A case study further indicates that the proposed diagnosis model based on the fuzzy inference can reflect the comprehensive aging state of cable insulation well, and that the cable service time has no correlation with the insulation aging state. | LIU Fei JIANG Pingkai LEI Qingquan ZHANG Li SU Wenqun | 2013 | 高电压技术2013，39，8： | 1 |
| 18 | Research on the related properties of EVM/AI(OH) 3/SIO2 composites applied for halogen-free flame retardant cable insulation and jacket 显示文摘 | Lichun Wang Genlin Wang Pingkai Jiang | 2011 | Journal of Applied Polymer Science2011，120，： | 1 |
| 19 | An investigation on the flammability of halogen-free fire retardant PP-APP-EG systems显示文摘 | Wei Ping Li Haixing Jiang Pingkai | 2004 | J Fire Sci2004，22，5： | 1 |
| 20 | Flammability of EVA/IFR (APP/PER/ZB system) and EVA/IFR/synergist (CaCO<sub>3</sub>, NG, and EG) composites显示文摘 | Xinfeng Wu Lichun Wang Chao Wu Genlin Wang Pingkai Jiang | 2012 | J Appl Polym Sci2012，，6： | 1 |
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