A solid-state electrolyte incorporating Li6.25Al0.25La3Zr2O12 into an ethylene oxide-based network for use in lithium metal batteries

被引:1
|
作者
Park, Hyeongmin
Gu, Min Guk
Kim, Sung-Kon [1 ]
机构
[1] Jeonbuk Natl Univ, Sch Chem Engn, Sch Semicond & Chem Engn, Jeonju 54896, South Korea
基金
新加坡国家研究基金会;
关键词
Solid-state electrolytes; Lithium; metal batteries; Ethylene oxide; Hybrid; GEL POLYMER ELECTROLYTES; HIGH-PERFORMANCE; COMPOSITE ELECTROLYTE; TRANSPORT; MEMBRANE; CATHODE;
D O I
10.1016/j.jallcom.2023.171200
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
In this study, solid-state hybrid electrolytes (ENLSEs) appropriate for use in a lithium metal battery (LMB) are produced with an ethylene oxide-basis network and garnet Li7La3Zr2O12 (LLZO) via solvent-free UV polymerization. The optimum composition of ENLSE is determined by varying the weight ratio of the ethylene oxide network, LLZO, and lithium salt. The ENLSEs show high lithium-ion conductivity (1.03 x 10(-4) S cm(-1)) at 50 degrees C, a result of the concurrent Li+ transport of ethylene-oxide chain and LLZO. The electrolytes exhibit a high voltage stability of 5.75 V (vs Li/Li+) and a considerable lithium-ion transfer number (tLi+similar to 0.68), suppress dendrite growth, and promote electrochemical stability. A LMB full cell delivers 99.4 mA h g(-1) of capacity at a current of 5 mA g(-1) with 55 % capacity retention over at least 70 charge-discharge cycles, suggesting that ENLSEs have potential as solid-state electrolytes for LMBs.
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页数:7
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