Spinel lithium manganese oxide (LiMn₂O₄) based Li-ion battery (LIB) is attractive for hybrid/full electric vehicles because of its abundant resources and easy preparation. However, operation under an elevated temperature could cause severe capacity fading of the spinel cathodes. In this work, 1, 3-propane sultone (PS) is investigated as an electrolyte additive for improving the cyclability of the LiMn₂O₄/graphite LIB at elevated temperature. The charge and discharge measurement proves that PS can significantly enhance the cyclability of 053048-type LiMn₂O₄/graphite pouch cell at 60°C. Compared to the cell without additive, the capacity retention of the cell using electrolyte with 5% PS increases from 52 to 71% after 180 cycles. The improved cyclability is attributable to the modification of the solid electrolyte interface (SEI) on both positive and negative sides of the LiMn₂O₄/graphite cell by PS, which effectively prevents anode and cathode from structural breakdown and inhibits the electrolyte decomposition.

尖晶石型锂锰氧化物（LiMn ₂ O ₄）基锂离子电池（LIB）具​​有丰富的资源和易于制备的特性，对于混合动力/全电动汽车具有吸引力。但是，在高温下操作可能会导致尖晶石阴极的严重容量衰减。在这项工作中，研究了1，3-丙烷磺酸内酯（PS）作为电解质添加剂，以改善LiMn ₂ O ₄ /石墨LIB在高温下的循环性。充电和放电测量证明，PS可以显着增强053048型LiMn ₂ O ₄的循环性/石墨袋式电池，摄氏60度。与不含添加剂的电池相比，使用电解质含量为5％的电解质的电池在180次循环后的容量保持率从52％提高至71％。改善的循环能力归因于PS对LiMn ₂ O ₄ /石墨电池的正反两面的固体电解质界面（SEI）的改性，从而有效地防止了阳极和阴极的结构破坏并抑制了电解质的分解。