超高速充放電が可能なナトリウム二次電池用正極材料の開発

钠离子电池的成功发展在很大程度上取决于开发合适的电极活性材料和电解液，这些材料和电解液具有经济可行性和稳定的电性能。为此，利用[C3C1pyrr][FSA](C3C1pyrr=N-甲基-N-丙基吡咯烷)离子液体(IL)和碳酸盐有机液体(OL)电解液与几种盐、Na[FSA](FSA=双(氟磺酰胺)胺)、NaPF6和Na[ClO4]制备了一组电解液，以探索降低成本、提高性能和阻燃的可能性。IL的加入提高了电解液的阳极稳定性，热稳定性测试表明，IL的加入可以有效地抑制易燃性。本文研究了上述混合电解液和离子液体电解液不同配比对钠离子电池的物理化学和电化学性能的影响。此外，使用硬碳负极、Na3V2(PO4)2F3和NaCrO2正极在广泛的温度范围内进行了电池测试

The successful development of sodium-ion batteries is heavily contingent on the development of suitable electrode active material and electrolytes with economic feasibility and stable electronic performance. To this end, a group of several electrolytes made from the [C3C1pyrr][FSA] (C3C1pyrr+ = N-methyl-N-propylpyrrolidinium) ionic liquid (IL) and carbonate organic liquid (OL) electrolytes with several salts, Na[FSA] (FSA = bis(fluorosulfonyl)amide), NaPF6 and Na[ClO4] were utilized to explored the possibilities of cost reduction, high performance and inhibited flammability. The anodic stability of the electrolytes were enhanced with the IL and the thermal stability tests reveal that the addition of IL can effectively suppress flammability. Herein, the physicochemical and electrochemical properties of the various mixing ratios of the aforementioned hybrid electrolytes and ionic liquid electrolytes investigated for sodium-ion batteries. Furthermore, cell tests using hard carbon negative, Na3V2(PO4)2F3 and NaCrO2 positive electrodes were carried out across wide temperature range