典型文献
Oxygen vacancies with localized electrons direct a functionalized separator toward dendrite-free and high loading LiFePO4 for lithium metal batteries
文献摘要：
The pursuit of high energy density has promoted the development of high-performance lithium metal batteries(LMBs).However,the underestimated but non-negligible dendrites of Li anode have been observed to shorten battery lifespan.Herein,a composite separator(TiO2-x@PP),in which TiO2 with electron-localized oxygen vacancies(TiO2-x)is coated on a commercial PP separator,is fabricated to homogenize lithium ion transport and stabilize the lithium anode interface.With the utilization of TiO2-x@PP separators,the symmetric lithium metal battery displays enhanced cycle stability over 800 h under a high current density of 8 mA cm-2.Moreover,the LMBs assembled with high-loading LiFePO4(9.24 mg cm-2)deliver a stable cycling performance over 900 cycles at a rate of 0.5 C.Comprehensive theoretical studies based on density functional theory(DFT)further unveil the mecha-nism.The favorable TiO2-x is beneficial for facilitating fast Li+migration and impeding anions transfer.In addressing the Li dendrite issues,the use of TiO2-x@PP separator potentially provides a facile and attractive strategy for designing well-performing LMBs,which are expected to meet the application requirements of rechargeable batteries.
文献关键词：
中图分类号：
作者姓名：
Qi An;Qing Liu;Shimin Wang;Lixiang Liu;Han Wang;Yongjiang Sun;Lingyan Duan;Genfu Zhao;Hong Guo
作者机构：
School of Materials and Energy,Yunnan University,No.2,Green Lake North Road,Kunming 650091,Yunnan,China;Institute for Integrative Nanosciences,Leibniz IFW Dresden,Helmholtzstra?e 20,01069 Dresden,Germany
文献出处：
引用格式：
[1]Qi An;Qing Liu;Shimin Wang;Lixiang Liu;Han Wang;Yongjiang Sun;Lingyan Duan;Genfu Zhao;Hong Guo-.Oxygen vacancies with localized electrons direct a functionalized separator toward dendrite-free and high loading LiFePO4 for lithium metal batteries)[J].能源化学,2022(12):38-45
A类：
Li+migration
B类：
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AB值：
0.586253
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