【摘要】 锂离子蓄电池中LiPF6电解液的稳定性一直受到人们的关注。使用卡尔费休水分测量仪测量LiPF6电解液中水的浓度,研究了LiPF6与水反应的动力学特性。结果表明,在LiPF6电解液中,1个LiPF6分子能与2个H2O分子发生反应;LiPF6与水反应的速率常数随着温度的升高而迅速增大;在电解液体系中,LiBF4和LiTFSI的水解稳定性高于LiPF6。更多还原

【Abstract】 The stability of LiPF6-based electrolytes for lithium-ion battery has been attracted much attention.The kinetics of the reaction between LiPF6 and H2O were studied by Karl-Fischer titration.The results show that one LiPF6 molecule can react with two water molecules in the LiPF6-based electrolytes;rate constant(k)rises rapidly with the increasing of temperature;the stabilities of LiBF4-based and LiTFSI-based electrolytes are better than LiPF6-based electrolyte.更多还原