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2 (a) 碳酸酯溶剂与Na+离子的结合能(ΔEb)，溶剂化焓［ΔH(sol)］和溶剂化自由能［ΔG(sol)］[17]；(b) Nax-HC电极与不同碳酸酯电解液的DSC曲线[18]；(c) HC||NVPF全电池在1 mol/L NaPF6或1 mol/L NaClO4-EC0.45:PC0.45:DMC0.1中的充放电曲线(插图为HC||NVPF全电池在0.2 C倍率下的循环性能)[19]

Fig.2 (a) binding energy (ΔEb), enthalpy of solvation [ΔH(sol)] and free energy of solvation [ΔG(sol)] of Na+ ion with various carbonate solvents[17]; (b) DSC measurements of Nax-HC electrode with different carbonate electrolytes[18]; (c) charge/discharge profiles for HC||NVPF full cells in electrolytes of 1 mol/L NaPF6 and1 mol/L NaClO4-EC0.45:PC0.45:DMC0.1 at 0.2 C (inset: Capacity and coulombic efficiency versus cycle number of the HC||NVPF full cell at 0.2 C)[19]