| 添加剂Na2CO3对石墨电极性能的影响 |
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| 引用本文： | 李佳,曹茹,侯涛,庄全超.添加剂Na2CO3对石墨电极性能的影响[J].电池,2012,42(3):119-122. |
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| 作者姓名： | 李佳 曹茹 侯涛 庄全超 |
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| 作者单位： | 1. 中国矿业大学材料科学与工程学院,江苏徐州,221116
2. 东莞市杉杉电池材料有限公司,广东东莞,523085 |
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| 基金项目： | 中央高校基本科研业务费专项资金，中国矿业大学科技攀登计划 |
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| 摘 要： | 在电解液1 mol/L LiPF6/EC+DMC中加入碳酸钠(Na2CO3),通过SEM、循环伏安和电化学阻抗谱分析,研究了Na2CO3对石墨电极的影响。添加饱和Na2CO3,可促进在石墨电极表面形成更稳定的固体电解质相界面(SEI)膜,抑制循环过程中电解液的进一步还原分解,增进Li+嵌脱过程的可逆性,改善石墨电极的电化学性能。
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| 关 键 词： | 锂离子电池 石墨电极 碳酸钠(Na2CO3) 固体电解质相界面(SEI)膜 |
Effects of electrolyte additive Na2CO3 on the performance of graphite electrode |
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| LI Jia
,
CAO Ru
,
HOU Tao
,
ZHUANG Quan-chao.Effects of electrolyte additive Na2CO3 on the performance of graphite electrode[J].Battery Bimonthly,2012,42(3):119-122. |
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| Authors: | LI Jia CAO Ru HOU Tao ZHUANG Quan-chao |
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| Affiliation: | 1(1.School of Materials Science and Engineering,China University of Mining and Technology,Xuzhou,Jiangsu221116,China;2 Dongguan Shanshan Battery Materials Co.,Ltd.,Dongguan,Guangdong 523085,China) |
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| Abstract: | Effects of sodium carbonate(Na2CO3) on graphite electrode were studied through SEM,cyclic voltammetry and electrochemical impedance spectroscopy analyses by adding Na2CO3 into electrolyte 1 mol/L LiPF6/EC+DMC.Adding saturated Na2CO3 could help to form a more stable solid electrolyte interphase(SEI) film,suppress the decomposition of electrolyte,enhance the reversibility of Li+ insertion and extraction process,improving the electrochemical performance of graphite electrode. |
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| Keywords: | Li-ion battery graphite electrode sodium carbonate(Na2CO3) solid electrolyte interphase(SEI) film |
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