引用本文:
郭营军, 李其其格, 宁英坤, 其鲁, 唐宏武. 高温下锂离子电池电解液的性能[J]. 物理化学学报,
2007, 23(0): 1-4.
doi:
10.3866/PKU.WHXB2007Supp01
Citation: GUO Ying-Jun, LI Qi-Qi-Ge, NING Ying-Kun, QI Lu, TANG Hong-Wu. Performance of Liquid Electrolyte for Lithium-ion Battery at Elevated-temperature[J]. Acta Physico-Chimica Sinica, 2007, 23(0): 1-4. doi: 10.3866/PKU.WHXB2007Supp01
Citation: GUO Ying-Jun, LI Qi-Qi-Ge, NING Ying-Kun, QI Lu, TANG Hong-Wu. Performance of Liquid Electrolyte for Lithium-ion Battery at Elevated-temperature[J]. Acta Physico-Chimica Sinica, 2007, 23(0): 1-4. doi: 10.3866/PKU.WHXB2007Supp01
高温下锂离子电池电解液的性能
摘要:
开发一种能够改善尖晶石锰酸锂电池高温循环性能的功能型电解液. 把添加剂Li2CO3加入常规LiPF6电解液中就形成了高温电解液. 添加剂Li2CO3的加入, 能够明显地抑制高温时电解液中氢氟酸的产生. 使用6 Ah尖晶石锰酸锂铝塑膜电池, 测试了含有添加剂Li2CO3的电解液的高温(55 ℃)循环性能, 并与常规电解液进行了对比. 测试结果表明, 含有该添加剂的高温电解液, 能够明显地改善尖晶石锰酸锂电池的高温循环性能.
English
Performance of Liquid Electrolyte for Lithium-ion Battery at Elevated-temperature
Abstract:
A new functional electrolyte was developed to improve the cycling performance of LiMn2O4 spinel at elevated temperatures. The so-called high-temperature electrolyte was formed by adding additive Li2CO3 into conventional LiPF6 electrolyte solutions. The Li2CO3 could greatly surpress the production of hydro fluoric acid in electrolyte solution even at elevated temperatures. With the increase of Li2CO3 ratio in electrolyte solution, the HF contents decreased. Electrochemical measurements of 6 Ah lithium-ion batteries with spinel LiMn2O4 as cathode material showed that additive Li2CO3 could greatly improve the elevated temperature (55 ℃) cycling performance of spinel LiMn2O4 lithium-ion batteries.
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