Development of non-flammable lithium secondary battery with ambient-temperature molten salt electrolyte performance of binder-free carbon-negative electrode
Development of non-flammable lithium secondary battery with ambient-temperature molten salt electrolyte performance of binder-free carbon-negative electrode
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DOI：
10.1016/j.jpowsour.2005.03.160
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发表时间：
2005-08
影响因子：
9.2
通讯作者：
K. Ui;T. Minami;Kohei Ishikawa;Y. Idemoto;N. Koura
中科院分区：
文献类型：
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作者：
K. Ui;T. Minami;Kohei Ishikawa;Y. Idemoto;N. Koura
研究了以LiCl饱和的AlCl 3 -1-乙基-3-甲基咪唑氯化物（EMIC）+SOCl 2熔体为电解液的不燃锂二次电池无粘结剂碳负极的性能。由于LiCl饱和的60.0mol%AlCl3-40.0mol%EMIC+0.1moll− 1 SOCl 2熔体的玻璃化转变点为−86.2°C，该熔体可以用作低温领域的电解质。使用通过电泳沉积法制备的无粘合剂的碳电极作为负极。四种碳材料，即，评估了人造石墨、天然石墨、软碳和硬碳作为碳电极。在30次循环中，这些电极的放电容量为296- 395 mAhg-1，充放电效率大于90%。该熔体可用作不可燃锂二次电池的电解质，并且无粘合剂的碳负极非常有效地工作。
The performance of a binder-free carbon-negative electrode was investigated using the LiCl-saturated AlCl3–1-ethyl-3-methylimizadolium chloride (EMIC)+SOCl2melt as the electrolyte for non-flammable lithium secondary batteries. Because the glass transition point of a LiCl-saturated 60.0mol%AlCl3–40.0mol%EMIC+0.1moll−1SOCl2melt was −86.2°C, the melt could be used as the electrolyte in a low-temperature domain. The binder-free carbon electrode made by the electrophoretic deposition method was used as the negative electrode. Four kinds of carbon materials, i.e., artificial graphite, natural graphite, soft carbon, and hard carbon were evaluated as the carbon electrode. For 30 cycles, the discharge capacities of these electrodes were 296–395mAhg−1and the charge–discharge efficiencies were more than 90%. The melt can be used as the electrolyte for non-flammable lithium secondary batteries and the binder-free carbon-negative electrode operates quite effectively.