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Comparison of commercial silicon-based anode materials for the design of a high-energy lithium-ion battery

Nano Research 2024年第6期17卷 5270-5277页

作者： Minhong Choi Eunhan Lee Jaekyung Sung Namhyung Kim Minseong Ko Division of Convergence Materials Engineering Pukyong National UniversityBusan 48547Republic of Korea Department of Materials Engineering and Convergence Technology Gyeongsang National University501 Jinju-daeroJinju 52828Republic of Korea Department of Materials System Engineering Pukyong National UniversityBusan 48547Republic of Korea

Silicon(Si)is considered a potential alternative anode for next-generation Li-ion batteries owing to its high theoretical capacity and abundance.However,the commercial use of Si anodes is hindered by their large volume expansion(~300%).Numerous efforts have been made to address this issue.Among these efforts,Si-graphite co-utilization has attracted attention as a reasonable alternative for high-energy anodes.A comparative study of representative commercial Si-based materials,such as Si nanoparticles,Si suboxides,and Si−Graphite composites(SiGC),was conducted to characterize their overall performance in high-energy lithium-ion battery(LIB)design by incorporating conventional graphite.Nano-Si was found to exhibit poor electrochemical performance,with severe volume expansion during cycling.Si suboxide provided excellent cycling stability in a full-cell evaluation with stable volume variation after 50 cycles,but had a large irreversible capacity and remarkable volume expansion during the first cycle.SiGC displayed a good initial Coulombic efficiency and the lowest volume change in the first cycle owing to the uniformly distributed nano-Si layer on graphite;however,its long-term cycling stability was relatively poor.To complement each disadvantage of Si suboxide and SiGC,a new combination of these Si-based anodes was suggested and a reasonable improvement in overall battery performance was successfully achieved.

关键词： silicon-based anode high-energy comparison lithium ion battery blended electrode

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Electrospun Fluorinated Polyimide/Polyvinylidene Fluoride Composite Membranes with High Thermal Stability for lithium ion battery Separator

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Advanced Fiber Materials 2022年第1期4卷 108-118页

作者： Jianwei Li Xuanning Zhang Yuyan Lu Keliang Linghu Chen Wang Zhonglei Ma Xinhai He School of Materials Science and Engineering Xi’an Polytechnic UniversityXi’an 710048China Shaanxi Key Laboratory of Macromolecular Science and Technology School of Chemical and Chemical EngineeringNorthwestern Polytechnical UniversityXi’an 710072China National Advanced Functional Fiber Innovation Center Suzhou 215000China

The separator with excellent mechanical and thermal properties are highly required for lithium ion batteries(LIBs).Therefore,it is crucial to develop novel nanofbrous membranes with enhanced mechanical strength and thermal stability.In this work,the fuorinated polyimide(FPI)was synthesized and blended with polyvinylidene fuoride(PVDF)to fabricate composite nanofbrous membranes(CNMs)via electrospinning method.Benefting from the introduction of aromatic FPI,the prepared PVDF/FPI nanofbrous membranes were endowed with enhanced mechanical strength and thermal stability.When the FPI content increased from 0 to 30 wt%,the tensile strength of composite nanofbrous membranes enhanced from 1.57 to 2.30 MPa.Moreover,there are almost no dimensional shrinkage for the CNM-30 containing 30 wt%FPI after heat treatment at 160℃ for 1 h.Furthermore,the prepared CNMs show improved electrochemical performances in comparison with neat PVDF and commercial Celgard membranes.The electrolyte uptake and ionic conductivity of the CNMs could reach to 522.4% and 1.14 ms·cm^(−1),respectively.The prepared CNMs could provide an innovative and promising approach for the development and design of high-performance separators.

关键词： Nanofbrous membrane PVDF Polyimide lithium ion battery Separator

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Boosting of reversible capacity delivered at a low voltage below 0.5 V in mildly expanded graphitized needle coke anode for a high-energy lithium ion battery

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Journal of Energy Chemistry 2022年第11期31卷 100-110,I0004页

作者： Dong Sun Lu Zhao Zhihua Xiao Kai Zhao Rundan Lin Hongmei Song Xilu Zhang Xinlong Ma Chong Peng Xiaoqiao Huang Xingxun Li Jinsen Gao Chunming Xu State Key Laboratory of Heavy Oil Processing China University of PetroleumBejing 102249China Department of Instrument Science and Engineering School of Electronic Information and Electrical EngineeringShanghai Jiao Tong UniversityShanghai 200240China Research Instituteof Petro China Fuel Oil Co. LtdBeijing100195China

The rate performance and cycle stability of graphitized needle coke(GNC)as anode are still limited by the sluggish kinetics and volume expansion during the Li ions intercalation and de-intercalation process.Especially,the output of energy density for lithium ion batteries(LIBs)is directly affected by the delithiation capacity below 0.5 V.Here,the mildly expanded graphitized needle coke(MEGNC)with the enlarged interlayer spacing from 0.346 to 0.352 nm is obtained by the two-step mild oxidation intercalation modification.The voltage plateau of MEGNC anode below 0.5 V is obviously broadened as compared to the initial GNC anode,contributing to the enhancement of Li storage below the low voltage plateau.Moreover,the coin full cell and pouch full cell configured with MEGNC anode exhibit much enhanced Li storage ability,energy density and better cycling stability than those full cells configured with GNC and commercial graphite anodes,demonstrating the practical application value of MEGNC.The superior anode behaviors of MEGNC including the increased effective capacity at low voltage and superior cyclic stability are mainly benefited from the enlarged interlayer spacing,which not only accelerates the Li ions diffusion rate,but also effectively alleviates the volume expansion and fragmentation during the Li ions intercalation process.In addition,the above result is further confirmed by the density functional theory simulation.This work provides an effective modification strategy for the NC-based graphite to enhance the delithiation capacity at a low voltage plateau,dedicated to improving the energy density and durability of LIBs.

关键词： Graphited needle coke Mildly expanded Interlayer spacing Low voltage platform lithium ion battery

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Graphene-Coated 1D MoTe_2 Nanorods as Anode for Enhancing lithium-ion battery Performance

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Chinese Journal of Structural Chemistry 2022年第8期41卷 18-24页

作者： Shuwei Chai Xiong Xiao Yabei Li Changhua An Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion School of Chemistry and Chemical Engineeringand Tianjin Key Laboratory of Advanced Functional Porous MaterialsInstitute for New Energy Materials&Low-Carbon TechnologiesTianjin University of Tech-nologyTianjin 300384China

One-dimensional nanostructures(1D)with short ion diffusion distance and fast ion transport path are excellent for lithium-ion batteries(LIBs). However, the nature of layered transition metal dichalcogenides makes it difficult to form 1D nanohybrids. Here, the MoTe_(2) nanorods with an average diameter of 100-200 nm and length of 1-3 μm encapsulated by reduced graphene oxide(MoTe_(2)/rGO) have been fabricated via in-situ reaction of GO coated Mo_3O_(10)(C_(2)H_(10)N_(2)) nanowires with Te under Ar/H_(2) atmosphere. When applied as anode of LIBs, the Mo Te_(2)/r GO delivers a high reversible capacity(637 m A h g^(-1) after 100 cycles at 0.2 A g^(-1)), good rate capability(374 m A h g^(-1) at 2 A g^(-1)) and excellent stability(360 m A h g^(-1) after 200 cycles at 0.5 A g^(-1)), which surpasses bare Mo Te2 nanorods and bulk Mo Te2 crystallite. Furthermore, a lithium-ion full cell constructed by coupling Mo Te2/r GO anode and LiCoO_(2) cathode shows a capacity of 105 m A h g^(-1) at 0.1 C. The enhanced performance mainly benefits from the advantages of 1D nanostructure, and meanwhile the r GO thin layers are able to improve the conductivity and maintain the structural stability. This work provides a simple pathway for the synthesis of 1D TMDs nanostructures for energy storage and conversion.

关键词： MoTe_2 nanorods graphene lithium ion battery

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The Surface Coating of Commercial LiFePO_4 by Utilizing ZIF-8 for High Electrochemical Performance lithium ion battery

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Nano-Micro Letters 2018年第1期10卷 3-11页

作者： XiaoLong Xu CongYu Qi ZhenDong Hao Hao Wang JinTing Jiu JingBing Liu Hui Yan Katsuaki Suganuma The College of Materials Science and Engineering Beijing University of Technology The Institute of Scientific and Industrial Research Osaka University

The requirement of energy-storage equipment needs to develop the lithium ion battery(LIB) with high electrochemical performance. The surface modification of commercial LiFePO_4(LFP) by utilizing zeolitic imidazolate frameworks-8(ZIF-8) offers new possibilities for commercial LFP with high electrochemical performances.In this work, the carbonized ZIF-8(C_(ZIF-8)) was coated on the surface of LFP particles by the in situ growth and carbonization of ZIF-8. Transmission electron microscopy indicates that there is an approximate 10 nm coating layer with metal zinc and graphite-like carbon on the surface of LFP/C_(ZIF-8) sample. The N_2 adsorption and desorptionisotherm suggests that the coating layer has uniform and simple connecting mesopores. As cathode material, LFP/C_(ZIF-8) cathode-active material delivers a discharge specific capacity of 159.3 m Ah g^(-1) at 0.1 C and a discharge specific energy of 141.7 m Wh g^(-1) after 200 cycles at 5.0 C(the retention rate is approximate 99%). These results are attributed to the synergy improvement of the conductivity,the lithium ion diffusion coefficient, and the degree of freedom for volume change of LFP/C_(ZIF-8) cathode. This work will contribute to the improvement of the cathode materials of commercial LIB.

关键词： LiFePO4 Zeolitic imidazolate frameworks-8 Surface coating Cathode lithium ion battery

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Performance improvement of lithium-ion battery by pulse current

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Journal of Energy Chemistry 2020年第7期29卷 208-214,I0007页

作者： Shaoqing Zhu Chen Hu Ye Xu Yi Jin Jianglan Shui School of Mechanical Engineering and Automation Beihang UniversityBeijing 100191China State Key Laboratory of Operation and Control of Renewable Energy&Storage Systems China Electric Power Research InstituteBeijing 100192China School of Materials Science and Engineering Beihang UniversityBeijing 100191China

Periodically changed current is called pulse current.It has been found that using the pulse current to charge/discharge lithium-ion batteries can improve the safety and cycle stability of the battery.In this short review,the mechanisms of pulse current improving the performance of lithium-ion batteries are summarized from four aspects:activation,warming up,fast charging and inhibition of lithium dendrites.Related content may help us use the pulse current to improve the performance of lithium-ion batteries and further optimize pulse current technology.

关键词： lithium ion battery Pulse current Activation Warming up Fast charging lithium dendrites

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Nb_2O_5-carbon core-shell nanocomposite as anode material for lithium ion battery

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Journal of Energy Chemistry 2013年第3期22卷 357-362页

作者： Ge Li Xiaolei Wang Xueming Ma Department of Physics East China Normal University Department of Chemical and Biomolecular Engineering University of CaliforniaLos AngelesCA 90095United States

Nb2O5-carbon nanocomposite is synthesized through a facile one-step hydrothermal reaction from sucrose as the carbon source, and stuclled as an anode material for high-performance lithium ion battery. The structural characterizations reveal that the nanocomposite possesses a core-shell structure with a thin layer of carbon shell homogeneously coated on the Nb2O5 nanocrystals. Such a unique structure enables the composite electrode with a long cycle life by preventing the Nb2O5 from volume change and pulverization during the charge-discharge process. In addition, the carbon shell efficiently improves the rate capability. Even at a current density of 500 mA.g-1, the composite electrode still exhibits a specific capacity of ~100 mAh.g-1. These results suggest the possibility to utilize the Nb2O5-carbon core-shell composite as a high performance anode material in the practical application of lithium ion battery.

关键词： niobium pentoxide core-shell long cycle life high performance anode lithium ion battery

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Kinetically enhanced electrochemical redox reactions by chemical bridging SnO_(2)and graphene sponges toward high-rate and long-cycle lithium ion battery

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Journal of Materials Science & Technology 2021年第29期88卷 250-257页

作者： Lishuang Fan Yu Zhang Hao Zhou Zhikun Guo Yujie Feng Naiqing Zhang State Key Laboratory of Urban Water Resource and Environment Harbin Institute of TechnologyChina Academy of Fundamental and Interdisciplinary Sciences Harbin Institute of TechnologyHarbin150001China School of Energy Science and Engineering Harbin Institute of TechnologyHarbinChina

Graphene has been widely used to improve the electrochemical performance in rate and cycling stability for SnO_(2).However,the mechanism of the synergistic effect and the interfacial interaction between SnO_(2)and graphene are still not fully understood.Herein,we put forward a novel,cost effective strategy to construct hierarchical SnO_(2)nanoclusters anchored on the graphene sponges for lithium storage by in situ self assembly.The result shows that the synergistic effect and interfacial interaction origin form the existence of strong oxygen bridges between SnO_(2)and graphene via the C-O-Sn linkage.It is demonstrated for the first time that the interfacial interaction by C-O-Sn bonding plays a crucial role in the rate and cycling stability both experimentally and theoretically.Thus,the SnO_(2)@graphene sponges exhibit remarkable rate capability(a reversible capability of 1141,997,912,831,693,536,and 302 mA h g^(-1)at 0.2 C,0.5 C,1 C,2 C,5 C,10 C and 20 C,respectively)and cycling performance(after 625 cycles at 6 A g^(-1)with a capacity retention of 537 m A h g^(-1)).

关键词： SnO_(2) Graphene sponges C-O-Sn bond Pseudocapacitive contributions lithium ion battery

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Three-dimensional hierarchical Ca_(3)Co_(4)O_(9) hollow fiber network as high performance anode material for lithium-ion battery

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Science China(Technological Sciences) 2021年第3期64卷 673-679页

作者： GUAN ShouJie FAN QingLu LIU LiYing LUO JunCai ZHONG YiCheng ZHAO WeiMin HUANG ZhenCai SHI ZhiCong Smart Energy Research Centre School of Materials and EnergyGuangdong University of TechnologyGuangzhou 510006China Guangdong Engineering Technology Research Center for New Energy Materials and Devices Guangzhou 510006China College of Chemical Engineering and Safety Binzhou UniversityBinzhou 256503China Hangzhou LIAO Technology Co. Ltd.Hangzhou 310000China

Transition metal oxides have high specific capacity as anode materials for lithium-ion battery.But aggregation of particles and volume expansion during lithiation/delithiation restrict their application.In this work,a three-dimensional hierarchical Ca_(3)Co_(4)O_(9)hollow fiber network assembled by nanosheets is prepared by an electrospinning combined with heat treatment method to overcome these issues and to boost its lithium storage performance.As-synthesized sample possesses excellent cyclic stability(578.6 m A h g^(-1)at 200 m A g^(-1)after 500 cycles)and rate performance(293.5 m A h g^(-1)at 5000 m A g^(-1)),much better than those of commercial Co_(3)O4.Furthermore,the fast kinetics of the three-dimensional Ca_(3)Co_(4)O_(9)hollow fiber network is also confirmed by the variable scan rates CV tests and the EIS measurements,which is dedicated to the specific hierarchical hollow fiber network structure that provides shorter ion transport distances and higher electrical conductivity.This work supplies a universal approach to improve the electrochemical performance of transition metal oxides for lithium ion batteries.

关键词： lithium ion battery anode material cobalt oxides electrospinning hierarchical structure

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First-principles study of interphase Ni_3Sn in Sn-Ni alloy for anode of lithium ion battery

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Chinese Physics B 2008年第9期17卷 3422-3427页

作者：侯贤华胡社军李伟善汝强余洪文黄钊文 School of Physics and Telecommunication Engineering South China Normal University Department of Mathematics and Physics Wuyi University Department of Chemistry South China Normal University

This paper investigates the mechanism of Li insertion into interphase Ni3Sn in Ni-Sn alloy for the anode of lithium ion battery by means of the first-principles plane-wave pseudopotential. Compared with other phases, it is found that the Ni3Sn has larger relative expansion ratio and lower electrochemical potential, with its specific plateaus voltage around 0.3 eV when lithium atoms are filled in all octahedral interstitial sites, and the relative expansion ratio increasing dramatically when the lithiated phase transits from octahedral interstitial sites to tetrahedral interstitial sites. So this phase is a devastating phase for whole alloy electrode materials.

关键词： Sn-Ni alloy first-principle electronic structure lithium ion battery

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