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添加剂Na_2CO_3对石墨电极性能的影响 被引量:2

Effects of electrolyte additive Na_2CO_3 on the performance of graphite electrode
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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。 Effects of sodium carbonate( Na2CO3) on graphite electrode were studied through SEM, cyclic voltammetry and elec- trochemical impedance spectroscopy analyses by adding Na2CO3 into electrolyte 1 mol/L LiPF6/EC + DMC. Adding saturated N2CO3 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.
出处 《电池》 CAS CSCD 北大核心 2012年第3期119-122,共4页 Battery Bimonthly
基金 中央高校基本科研业务费专项资金(2010LKHX03) 中国矿业大学科技攀登计划(ON090237)
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 Li-ion battery graphite electrode sodium carbonate(Na2CO3) solid electrolyte interphase(SEI) film
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参考文献11

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