Organosilicon-group-derived silica-ionogel electrolyte for lithium ion batteries
来源期刊：Rare Metals2018年第6期
论文作者：Yue-Jiao Li Cui Guo Wen-Jie Qu Nan Chen Yu-Juan Dai Ren-Jie Chen Feng Wu
文章页码：504 - 509
摘 要：In order to avoid leakage problem caused by liquid electrolyte, a new ionogel electrolyte was developed by in situ immobilizing organosilicon-functionalized ionic liquid within a nanoporous silica matrix. The ionic liquid evenly coats on the surface of porous silica and fills in the silica framework pores with no strong chemical interaction.The ionogel electrolyte has the dual advantages of a silica solid support and a wide electrochemical stability window of ionic liquid（4.87 V vs. Li+/Li）. The half-cells assembled with this electrolyte and LiFePO4 electrode have excellent performance at room temperature and 60 ℃. The Li/SiO2-IGE/LiFePO4 cell displays a discharge capacity of 129.1 mAh·g-1 after 200 charge/discharge cycles at room temperature.
Yue-Jiao Li1,2，Cui Guo1，Wen-Jie Qu1，Nan Chen1，Yu-Juan Dai1，Ren-Jie Chen1,2，Feng Wu1,2
1. School of Material Science and Engineering, Beijing Institute of Technology2. Collaborative Innovation Center of Electric Vehicles in Beijing
摘 要：In order to avoid leakage problem caused by liquid electrolyte, a new ionogel electrolyte was developed by in situ immobilizing organosilicon-functionalized ionic liquid within a nanoporous silica matrix. The ionic liquid evenly coats on the surface of porous silica and fills in the silica framework pores with no strong chemical interaction.The ionogel electrolyte has the dual advantages of a silica solid support and a wide electrochemical stability window of ionic liquid（4.87 V vs. Li+/Li）. The half-cells assembled with this electrolyte and LiFePO4 electrode have excellent performance at room temperature and 60 ℃. The Li/SiO2-IGE/LiFePO4 cell displays a discharge capacity of 129.1 mAh·g-1 after 200 charge/discharge cycles at room temperature.
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