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Understanding and unveiling the electro-chemo-mechanical behavior in solid-state batteries

SusMat 2024年第2期4卷 75-88页

作者： Yunlei Zhong Xia Zhang Yong Zhang Peng Jia Yuebin Xi Lixing Kang Zhenjiang Yu Key Laboratory of Multifunctional Nanomaterials and Smart Systems Division of Advanced MaterialsSuzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of SciencesSuzhouChina Institute of Applied Materials Helmholtz Centre Berlin for Materials and EnergyBerlinGermany School of Electronic and Information Engineering Changshu Institute of TechnologyChangshuJiangsuChina State Key Laboratory of Biobased Material and Green Papermaking Qilu University of TechnologyJinanShandongChina

Solid-state batteries(SSBs)are attracting growing interest as long-lasting,thermally resilient,and high-safe energy storage systems.As an emerging area of battery chemistry,there are many issues with SSBs,including strongly reductive lithium anodes,oxidized cathodes(state of charge),the thermodynamic stability limits of solid-state electrolytes(SSEs),and the ubiquitous and critical interfaces.In this Review,we provided an overview of the main obstacles in the development of SSBs,such as the lithium anode|SSEs interface,the cathode|SSEs interface,lithium-ion transport in the SSEs,and the root origin of lithium intrusions,as well as the safety issues caused by the dendrites.Understanding and overcoming these obstacles are crucial but also extremely challenging as the localized and buried nature of the intimate contact between electrode and SSEs makes direct detection difficult.We reviewed advanced characterization techniques and discussed the complex ion/electron-transport mechanism that have been plaguing electrochemists.Finally,we focused on studying and revealing the coupled electro-chemo-mechanical behavior occurring in the lithium anode,cathode,SSEs,and beyond.

关键词： advanced characterization techniques chemo-mechanical effects interface

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Doping Strategy in Nickel-Rich Layered Oxide Cathode for Lithium-Ion Battery

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Renewables 2023年第3期1卷 316-340页

作者： Jiayi Wang Xincheng Lei Shengnan Guo Lin Gu Xin Wang Aiping Yu Dong Su Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190 School of Information and Optoelectronic Science and Engineering&International Academy of Optoelectronics at Zhaoqing South China Normal UniversityGuangzhou 510006 Beijing National Center for Electron Microscopy and Laboratory of advanced Materials Department of Materials Science and EngineeringTsinghua UniversityBeijing 100084 Department of Chemical Engineering Waterloo Institute for NanotechnologyWaterloo Institute for Sustainable EnergyUniversity of WaterlooWaterlooOntario N2L 3G1

Ni-rich layered oxides have been regarded as the most promising cathode material for next-generation high energy density Li-ion batteries because of their advantages in capacity and cost.However,these cathodes suffer from irreversible structural degradation,fast capacity attenuation as well as seriously reduced safety in their practical applications.Doping strategies with different elements have been employed to address the above issues.In this review,we summarize the research advances of the elemental doping in a Ni-rich layered oxide cathode.The experimental methods and dopant selection rules are briefly introduced.Then we discuss here the effects of the elemental doping from the aspects of the crystal lattice,electronic structure,nanomorphology,and surface stability.In addition,this review surveys the first-principles calculation and advanced structural characterization techniques,which have played important roles in elucidating the structure-performance correlations.Finally,perspectives regarding the future of doping strategy are given.

关键词： lithium-ion battery layered oxide cathode doping strategy advanced characterization techniques

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Progress in niobium-based oxides as anode for fast-charging Li-ion batteries

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能源评论(英文) 2023年第2期2卷 62-79页

作者： Fuqiang Xie Junling Xu Qizhong Liao Qingqing Zhang Binyun Liu Lianyi Shao Junjie Cai Xiaoyan Shi Zhipeng Sun Ching-Ping Wong School of Materials and Energy Guangdong University of TechnologyGuangzhou510006China Guangzhou Nano New Material Technology Co. Ltd.Guangzhou510006China Guanghua Institute of Sci-Tech(Guangdong)Co. Ltd.Guangzhou510006China School of Materials Science and Engineering Georgia Institute of TechnologyAtlantaGAUnited States

With the increasing popularity of electric/hybrid vehicles and the rapid development of 3C electronics,there is a growing interest in high-rate energy storage systems.The rapid development and widespread adoption of lithiumion batteries(LIBs)can be attributed to their numerous advantages,including high energy density,high operating voltage,environmental friendliness,and lack of memory effect.However,the progress of LIBs is currently hindered by the limitations of energy storage materials,which serve as vital components.Therefore,there is an urgent need to address the development of a new generation of high-rate energy storage materials in order to overcome these limitations and further advance LIB technology.Niobium-based oxides have emerged as promising candidates for the fabrication of fast-charging Li-ion batteries due to their excellent rate capability and long lifespan.This review paper provides a comprehensive analysis of the fundamentals,methodologies,and electrochemistries of niobium-based oxides,with a specific focus on the evolution and creation of crystal phases of Nb_(2)O_(5),fundamental electrochemical behavior,and modification methods including morphology modulation,composite technology,and carbon coating.Furthermore,the review explores Nb_(2)O_(5)-derived compounds and related advanced characterization techniques.Finally,the challenges and issues in the development of niobiumbased oxides for high-rate energy storage batteries are discussed,along with future research perspectives.

关键词： Energy storage materials Fast-charging Li-ion batteries Niobium-based oxides Modification Nb_(2)O_(5)-Derived compounds advanced characterization techniques

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