电解质
电化学
离子液体
溶解
阴极
离子
钠
无机化学
钠离子电池
离子电导率
插层(化学)
离子键合
电极
化学工程
材料科学
化学
电导率
快离子导体
阳极
锂离子电池
电池(电)
分析化学(期刊)
介电谱
冶金
催化作用
有机化学
物理化学
生物化学
作者
Luciana Gomes Chagas,Daniel Buchholz,Li‐Ming Wu,Britta Vortmann,Stefano Passerini
标识
DOI:10.1016/j.jpowsour.2013.08.118
摘要
The electrochemical performance of Na0.45Ni0.22Co0.11Mn0.66O2 in an ionic liquid-based electrolytic solutions is reported and compared with that obtained in a conventional, carbonate-based electrolyte. Even at ambient temperature, the Na-ion intercalation material reveals a much better electrochemical performance in 10 mol% NaTFSI (or 0.45 M) in PYR14FSI electrolyte than 0.5 M NaPF6 in PC electrolyte in terms of specific capacity and cycling stability. In particular, the electrodes cycled in the IL-based electrolyte combine a capacity retention of about 80% after 100 cycles with high specific capacities (about 200 mAh g−1) and high average voltage (2.7 V vs. Na/Na+), demonstrating that Na0.45Ni0.22Co0.11Mn0.66O2 is a promising cathode material for sodium-ion batteries.
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