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| 1 | Lithium metal anodes: Present and future显示文摘Commercial lithium-ion(Li-ion)batteries based on graphite anodes are meeting their bottlenecks that are limited energy densities.In order to satisfy the large market demands of smaller and lighter rechargeable batteries,high-capacity metallic Li replacing low-specific-capacity graphite enables the higher energy density in next-generation rechargeable Li metal batteries(LMBs).However,Li metal anode has been suffering from dendritic problems,interfacial side reactions,volume change and low Coulombic efficiency.Therefore,performance enhancements of Li metal anodes are rather important to realize the high energy density characteristic of metallic Li.In this review,the annoying Li dendrite growth,unstable reaction interface and practical application issues of Li metal anodes are summarized and detailedly discussed to understand the current challenges concerning Li metal anodes.For overcoming such remaining challenges,the corresponding strategies and recent advances are covered and categorized.Finally,we discuss future opportunities and perspectives for developing high-performance Li metal anodes. | Renheng Wang Weisheng Cui Fulu Chu Feixiang Wu | 2020 | Journal of Energy Chemistry2020,29,9: | 15 |
| 2 | Recent Advances and Applications Toward Emerging Lithium–Sulfur Batteries:Working Principles and Opportunities显示文摘Lithium–sulfur(Li-S)batteries have been considered as promising candidates for large-scale high energy density devices due to the potentially high energy density,low cost,and more pronounced ecological compatibility.However,the complex Li-S conversion reactions,unsatisfactory battery performance,and unsafe metallic Li anode restrict the development of Li-S batteries to achieve commercialization.This review mainly focuses on three aspects which are the remaining challenges,recent advances,and applications in Li-S batteries.Firstly,this review portrays Li-S conversion chemistry involving the multi-step and multi-electron reaction mechanism,as well as the remaining challenges.Then,the scientific strategies and very recent advances of the cathode,electrolyte,lithium anode,and other constituent parts of Li-S batteries are detailly summed up,as well as their advantages and limitations.For the sake of promoting the Li-S batteries practicalization,next section is primarily concerned with problems,the corresponding solutions,and application scenarios of practical pouch cells.Finally,the important findings as guidelines and some future directions as trends for developing emerging Li-S batteries are briefly summarized. | Rongyu Deng Meng Wang Huanyu Yu Shunrui Luo Jinhui Li Fulu Chu Bin Liu Feixiang Wu | 2022 | Energy & Environmental Materials2022,5,3: | 3 |
| 3 | Moderately concentrated electrolyte enabling high-performance lithium metal batteries with a wide working temperature range显示文摘The electrolyte integrated with lithium metal anodes is subjected to the issues of interfacial compatibility and stability,which strongly influence the performances of high-energy lithium metal batteries.Here,we report a new electrolyte recipe viz.a moderately concentrated electrolyte comprising of 2.4 M lithium bis(fluorosulfonyl)imide(LiFSI)in a cosolvent mixture of fluorinated ethylene carbonate(FEC)and dimethyl carbonate(DMC)with relatively high ion conductivity.Owing to the preferential decomposition of LiFSI and FEC,an inorganic-rich interphase with abundant Li_(2)O and LiF nanocrystals is formed on lithium metal with improved robustness and ion transfer kinetics,enabling lithium plating/stripping with an extremely low overpotential of~8 mV and the average CE of 97%.When tested in Li||LiFePO_(4) cell,this electrolyte provides long-term cycling with a capacity retention of 98.3%after 1000 cycles at 1 C and an excellent rate performance of 20 C,as well as an areal capacity of 1.35 mA h cm^(-2)at the cathode areal loading of 9 mg cm^(-2).Moreover,the Li||LiFePO_(4) cell exhibits excellent wide-temperature performances(-40~60℃),including long-term cycling stability over 2600 cycles without visible capacity fading at 0℃,as well as extremely high average CEs of 99.6%and 99.8% over 400 cycles under-20℃ and 45℃. | Sisi Wang Zhichen Xue Fulu Chu Zengqiang Guan Jie Lei Feixiang Wu | 2023 | Journal of Energy Chemistry2023,,4: | 1 |
| 4 | Air-stable inorganic solid-state electrolytes for high energy density lithium batteries: Challenges, strategies, and prospects显示文摘Solid-state batteries have been considered as promising next-generation energy storage devices for potentially higher energy density and better safety compared with commercial lithium-ion batteries that are based on organic liquid electrolytes.However,in terms of indispensable solid-state electrolytes,there are remaining issues to be solved before entering the market.Most solid-state electrolytes are air-sensitive,which causes a complex and expensive cell assembly and impressible interface.Therefore,the solid-state electrolytes are expected to be atmosphere-stable,which will undoubtedly bring significant benefits to solid-state battery manufacturing.This review covers air-stabilityrelated issues of different types of inorganic solid-state electrolytes and the corresponding strategies.First,we provide an overview of solid-state electrolytes and solid-state batteries,including their history and advantages/disadvantages.Then,different types of solid-state electrolytes are selected as examples to illustrate the unfavorable interactions in air and the corresponding adverse effects.Next,according to recent advances,we summarize the effective strategies of constructing different types of air-stable inorganic solid-state electrolytes.Finally,perspectives on designing accessible air-stable solid-state electrolytes are provided,aiming to achieve the assembly of high-performance solid-state batteries in the atmosphere. | Xuanfeng Chen Zengqiang Guan Fulu Chu Zhichen Xue Feixiang Wu Yan Yu | 2022 | InfoMat2022,4,1: | 0 |