聚偏氟乙烯
电解质
碳化物
锂(药物)
阳极
材料科学
聚合物
氟化锂
六氟丙烯
电化学
化学工程
化学
复合材料
无机化学
离子电导率
工程类
共聚物
电极
物理化学
医学
内分泌学
四氟乙烯
作者
Yuhang Shan,Libo Li,Xiaochuan Chen,Shubo Fan,Hang Yang,Yanxia Jiang
出处
期刊:ACS energy letters
[American Chemical Society]
日期:2022-06-10
卷期号:7 (7): 2289-2296
被引量:63
标识
DOI:10.1021/acsenergylett.2c00849
摘要
Nanomolybdenum carbides with different morphologies and structures are inorganic fillers in solid polymer electrolytes. The matrices were polyvinylidene fluoride (PVDF) and polyvinylidene fluoride–hexafluoropropylene (PVDF–HFP). Nanomolybdenum carbides (Mo2C) reduced the energy barrier of lithium-ion transfer. The nanofiller Mo2C with a hexagonal system built the carrier channel by charge intervention for good dynamic behavior. More effective carriers between the electrode and electrolyte interface were conducive to a uniform charge distribution and even deposition of lithium ion. The ionic conductivity of the polymer electrolyte was 7.27 × 10–4 S cm–1 at room temperature with an electrochemical stability window of 4.23 V and a lithium-ion transference number of 0.63. Solid-state batteries performed 500 cycles at a high current density of 2 C, with a capacity retention rate of 51.6%, including dendrite-free lithium anodes and stable SEI films.
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