Li-MnO_2电池LiClO_4系电解液低温性能的研究
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摘要
研究了以LiClO_4为电解质盐,采用不同配比的溶剂、添加剂配制成的系列电解液体系,在0℃工况,对采用不同配方电解液电池的放电性能进行了测试,且讨论了几种电解液的交流阻抗图谱。研究发现:加入配比为DME∶PC∶DOL体积比为5∶2∶3电解液的电池,界面阻抗小,稳定性好,容量保持率高。
Using LiClO_4 as solute, the electrolytes were made with solvents and additives with different ratios. The electrochemical performance of batteries with these electrolytes was tested at 0 ℃, and their EIS were also measured. The test results show that when the volume ratio of electrolyte is DME∶PC∶DOL=5∶2∶3, the battery has low interface resistance, good stability and high maintain capacity.
Using LiClO_4 as solute, the electrolytes were made with solvents and additives with different ratios. The electrochemical performance of batteries with these electrolytes was tested at 0 ℃, and their EIS were also measured. The test results show that when the volume ratio of electrolyte is DME∶PC∶DOL=5∶2∶3, the battery has low interface resistance, good stability and high maintain capacity.
引文
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[3] FENG J K,AI X P,CAO Y L,et al. Possible use of non-flammablephosphonate ethers as pure electrolyte solvent for lithium batteries[J]. Journal of Power Source,2008,177:194-198.
[2] PARK M S,YOON W Y. Characteristics of a Li/MnO2battery usinga lithium powder anode at high-rate discharge[J]. Journal of PowerSources,2003,114(2):237-243.
[3] FENG J K,AI X P,CAO Y L,et al. Possible use of non-flammablephosphonate ethers as pure electrolyte solvent for lithium batteries[J]. Journal of Power Source,2008,177:194-198.