维普中文期刊产品整合服务

Investigation of Li-ion transport in Li7P3S11 and solid-state lithium batteries

查看全文 作　　者：Chuang [1]Yu;Swapna [1]Ganapathy;Ernst R.H.van [2]Eck;Lambert van [1]Eijck;Niek de [1]Klerk;Erik [1]M.Kelder;Marnix [1]Wagemaker 高影响力作者 机构地区：[1]Department of Radiation Science and Technology,Delft University of Technology,Mekelweg 15,2629JB Delft,the Netherlands;[2]Institute for Molecules and Materials,Radboud University Nijmegen,Heyendaalseweg 135,6525 AJ Nijmegen,the Netherlands高影响力机构 出　　处：《Journal of Energy Chemistry》索引2019年第28卷第11期,共7页高影响力期刊 基　　金：funding from the European Research Council under the European Union’s Seventh Framework Programme (FP/2007-2013)/ERC Grant Agreement no.[307161] of M.W. 摘　　要：The high Li-ion conductivity of the Li7P3S11 sulfide-based solid electrolyte makes it a promising candidate for all-solid-state lithium batteries. The Li-ion transport over electrode-electrolyte and electrolyteelectrolyte interfaces, vital for the performance of solid-state batteries, is investigated by impedance spectroscopy and solid-state NMR experiments. An all-solid-state Li-ion battery is assembled with the Li7P3S11 electrolyte, nano-Li2S cathode and Li-In foil anode, showing a relatively large initial discharge capacity of 1139.5 m Ah/g at a current density of 0.064 m A/cm^ 2 retaining 850.0 m Ah/g after 30 cycles. Electrochemical impedance spectroscopy suggests that the decrease in capacity over cycling is due to the increased interfacial resistance between the electrode and the electrolyte. 1D exchange ^7Li NMR quantifies the interfacial Li-ion transport between the uncycled electrode and the electrolyte, resulting in a diffusion coefficient of 1.70(3) ×10^-14cm^2/s at 333 K and an energy barrier of 0.132 e V for the Li-ion transport between Li2S cathode and Li7P3S11 electrolyte. This indicates that the barrier for Li-ion transport over the electrode-electrolyte interface is small. However, the small diffusion coefficient for Li-ion diffusion between the Li2S and the Li7P3S11 suggests that these contact interfaces between electrode and electrolyte are relatively scarce, challenging the performance of these solid-state batteries. 关 键 词：U7P3S11 LI-ION TRANSPORT Spin-lattice NMR Exchange NMR SOLID-STATE BATTERY
相关文献

参考文献(51)

引证文献(4)

网站首页 | 关于我们 | 联系我们 | 产品服务 | 客服中心 | 广告服务 | 版权声明 | 网站联盟 | 友情链接 | 售卡网点

版权所有© 渝B2-20050021-1　渝公网安备 50019002500403号　违法和不良信息举报中心

互联网出版许可证 新出网证(渝)字10号 全国400电话 - 免长途话费