Scalable preparation of asymmetrical bilayer sulfide/halide electrolyte membranes for all-solid-state batteries with high voltage

被引:0
作者
Jing, Shenghao [1 ]
Liu, Yanchen [2 ]
Lu, Yang [1 ]
Liu, Hanzhou [3 ]
Liu, Yang [5 ]
Liu, Siliang [4 ]
Zhang, Zongliang [3 ]
Liu, Fangyang [1 ]
机构
[1] Cent South Univ, Sch Met & Environm, Changsha 410083, Peoples R China
[2] Minist Educ, Engn Res Ctr Adv Battery Mat, Changsha 410083, Peoples R China
[3] Hunan Prov Key Lab Nonferrous Value Added Met, Changsha 410083, Peoples R China
[4] Natl Energy Met Resources & New Mat Key Lab, Changsha 410083, Peoples R China
[5] Hunan Energy Frontiers New Mat Technol Co Ltd, Changsha 410208, Peoples R China
基金
中国国家自然科学基金;
关键词
all-solid-state batteries; halide electrolyte; sulfide electrolyte; high-voltage; asymmetrical;
D O I
10.1007/s11431-024-2847-8
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
All-solid-state batteries (ASSBs) are considered to be the most promising candidates for improving battery safety and energy density. Sulfide electrolytes have a narrow electrochemical window, which hinders their applications coupled with high-voltage cathodes. Halide electrolytes with high-voltage endurance can help solve this problem. Herein, the combination of spraying and slurry-coating methods was adopted as a practical route to process a free-standing Li6PS5Cl (LPSCl) asymmetrical electrolyte membrane (19.23 Omega cm2, 75 mu m) decorated with a 10 mu m Li3InCl6 (LICl) layer. The LICl-LPSCl asymmetrical electrolyte membranes enhanced the high-voltage stabilities to match those of LiNi0.83Co0.11Mn0.06O2 (NCM811) and Li1.2Ni0.13Co0.13Mn0.54O2 (LRMO) cathodes. The NCM811 divided by LICl-LPSCl divided by nSi ASSB achieved an initial coulombic efficiency (ICE) of 85.13% and a capacity retention of 77.16% after 200 cycles. Compared with the LPSCl membrane, the LICl-LPSCl membrane displayed high stability with the LRMO cathode as the charging cut-off voltage increased to 4.7 V, which improved the initial charge capacity from 143 to 270 mAh g-1 and achieved stable cycling of 160 mAh g-1 at 0.5 C. Additionally, we attempted continuous LICl-LPSCl membrane production and utilized the product to fabricate a pouch-type ASSB based on LRMO. The fabrication of the LICl-LPSCl electrolyte membrane demonstrated its potential for controllable and industry-adaptable applications in ASSBs.
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页数:13
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