Infiltrating lithium into carbon doth decorated with zinc oxide arrays for dendrite-free lithium metal anode

查看全文 作　　者：Xianshu [1,2]Wang;Zhenghui [2]Pan;Yang [3]Wu;Xiaoyu [2]Ding;Xujia [1]Hong;Guoguang [2]Xu;Meinan [2]Liu;Yuegang [2,3,4]Zhang;Weishan [1,4]Li

机构地区：[1]School of Chemistry and Environment, South China Normal University, Guangzhou 510006, China;[2]i-lab, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, China;[3]Department of Physics, Tsinghua University, Beijing 100084, China;[4]Engineering Research Center of MTEES (Ministry of Education), Research Center of BMET (Guangdong Province), and Key Laboratory of ETESPG (GHEI), South China Normal University, Guangzhou 510006, China

出　　处：《Nano Research》索引2019年第12卷第3期,共5页

基　　金：National Key Research and Development Program of China (Nos. 2016YFB0100100 and 2018YFB0104000);Key Project of Science and Technology in Guangdong Province (No. 2017A010106006);National Natural Science Foundation of China (Nos. 21433013 and 51471073). 摘　　要：Lithium metal anode for batteries has attracted extensive attentions, but its application is restricted by the hazardous dendritic Li growth and dead Li formation. To address these issues, a novel Li anode is developed by infiltrating molten Li metal into conductive carbon cloth decorated with zinc oxide arrays. In carbonate-based electrolyte, the symmetric cell shows no short circuit over 1,500 h at 1 mA·cm^-2, and stable voltage profiles at 3 mA cm^-2 for ~ 300 h cycling. A low overpotential of ~ 243 mV over 350 cycles at a high current density of 10 mA·cm^-2 is achieved, compared to the seriously fluctuated voltage and fast short circuit in the cell using bare Li metal. Meanwhile, the asymmetric cell withstands 1,000 cycles at 10 C (1 C = 167 mAh·g^-1) compared to the 210 cycles for the cell using bare Li anode. The excellent performance is attributed to the well-regulated Li plating/stripping drive n from the formation of LiZn alloy on the wavy carb on fibers, resulting in the suppress!on of dendrite growth and pulverization of the Li electrode during cycling. 关键词：LITHIUM metal anodes LITHIUM plating/stripping dendrite-free thermal infiltration CARBON cloth zinc oxide nanowire ARRAYS

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Infiltrating lithium into carbon doth decorated with zinc oxide arrays for dendrite-free lithium metal anode

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