【摘要】 以Li Ni0.5Mn1.5O4正极材料作为研究电极,将原位透射红外电解池用于锂离子电池首次充电时电解液析气行为研究,评价电解液电化学稳定性及其对正极性能影响。结果表明氟代碳酸乙烯酯(FEC)基电解液具有高的电化学稳定性并且能够提高正极比容量和电化学循环稳定性,100次循环后容量保持率高达97.9%。更多还原

【Abstract】 Li Ni0.5 Mn1.5 O4 anode material was used as the research electrode, and the in-situ transmission infraredelectrolytic cell was used to study the gas evolution behavior of the electrolyte during the first charge of lithium ionbattery, so as to evaluate the electrochemical stability of the electrolyte and its influence on the positive electrodeperformance. The experimental results show that the FEC-based electrolyte is with high electrochemical stability andthe specific capacity and cyclic stability of Li Ni0.5 Mn1.5 O4 cathode are improved, the capacity retention rate of Li Ni0.5-Mn1.5 O4 reaches 97.9% after 100 cycles.更多还原