非水系钠离子电池的电解质研究进展

马梦莹, 潘慧霖, 胡勇胜

Progress in electrolyte research for non-aqueous sodium ion batteries

Mengying MA, Huilin PAN, Yongsheng HU

图5 (a) Na||HC半电池在3.3 mol/L NaFSI/TMP电解液和1.0 mol/L NaPF6/EC:DEC(体积比1∶1)电解液中的循环性能和库仑效率(插图为在两种电解液中HC表面SEI膜的结构示意图)[54]；(b) Sb负极在0.8 mol/L NaPF6/TMP +10%(体积分数)FEC和1 mol/L NaPF6/ EC:DEC(体积比1∶1)电解液中的初始充放电曲线[57]；(c) HC负极在0.9 mol/L NaFSI/TFEP电解液中形成SEI层的机理；(d) HC||NVP全电池在0.9 mol/L NaFSI/TFEP电解液中的电化学性能[58]

Fig.5 (a) cycling performance and coulombic efficiency of the Na||HC half-cells using 3.3? mol/L NaFSI/TMP electrolyte and 1.0? mol/L NaPF6/EC:DEC (1∶1, by vol.) electrolyte (insets: Schemes of SEI passivation layers produced on a hard carbon surface in the above two electrolytes)[54]; (b) initial charge/discharge curves of Sb-based anode in 0.8 mol/L NaPF6/TMP+10% (volume fraction) FEC electrolyte and in 1 mol/L NaPF6 EC/DEC (1∶1, by vol.) electrolyte[57]; (c) mechanism of formation the SEI layer on the hard carbon anode in 0.9 mol/L NaFSI/TFEP electrolyte, (d) electrochemical performance of the HC||NVP full cell using a 0.9 mol/L NaFSI/TFEP electrolyte[58]