| 锂空气电池用离子液体基复合电解液的性能 |
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| 引用本文： | 肖尧,郎笑石,吴昊,蔡克迪. 锂空气电池用离子液体基复合电解液的性能[J]. 电池, 2017, 47(2). DOI: 10.19535/j.1001-1579.2017.02.007 |
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| 作者姓名： | 肖尧 郎笑石 吴昊 蔡克迪 |
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| 作者单位： | 1. 渤海大学化学化工学院,辽宁锦州,121013;2. 渤海大学新能源学院,辽宁锦州,121013;3. 中国石油天然气股份有限公司锦州石化分公司,辽宁锦州,121001 |
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| 基金项目： | 国家自然科学基金，辽宁省高校优秀人才支持计划第一层次项目 |
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| 摘 要： | 针对运行过程中有机电解液易挥发导致电池失效的现象,设计一种适用于锂空气电池的复合电解质材料。采用离子液体1-乙基-3-甲基咪唑四氟硼酸盐([Emim]BF_4)与碳酸酯类(EC+EMC+DMC)作为主体溶剂,亲水型LiBF_4与疏水型LiPF_6作为溶质,四氟硼酸螺环季铵盐作为添加剂制备复合电解液。组装的锂空气电池在低电流密度(0.01 mA/cm~2)下表现出较好的电化学性能,放电比容量可达2 960 mAh/g,比能量达到6 810 Wh/kg。
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| 关 键 词： | 锂空气电池 复合电解质 离子液体 热稳定性 比能量 |
Performance of ionic liquid based composite electrolyte for lithium-air battery |
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| XIAO Yao,LANG Xiao-shi,WU Hao,CAI Ke-di. Performance of ionic liquid based composite electrolyte for lithium-air battery[J]. Battery Bimonthly, 2017, 47(2). DOI: 10.19535/j.1001-1579.2017.02.007 |
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| Authors: | XIAO Yao LANG Xiao-shi WU Hao CAI Ke-di |
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| Abstract: | The composite electrolyte material for lithium-air battery was presented to solve the problem of battery failure caused by volatile of organic electrolytes.The composite electrolyte was prepared by using ionic liquid 1-ethyl-3-methylimidazolium tetrafluoroborate ([Emim] BF4) and carbonates EC + EMC + DMC as solvent,hydrophilic LiBF4 and hydrophobic LiPF6 as solute,spiroquat borate tetrafluoroborate as additive.Lithium-air battery showed high electrochemical performance at low current density (0.01 mA/cm2),the specific discharge capacity was 2 960 mAh/g and the specific energy was 6 810 Wh/kg. |
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| Keywords: | lithium-air battery composite electrolyte ionic liquid thermal stability specific energy |
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