Poly(arylamine-imide)s Cathode Materials for Lithium-Ion Batteries with High Average Voltage and Long Cycle Life
作者:Chengjun Zhang、Sha Chen、Guangying Zhou、Qiong Hou、Suilian Luo、Yuhai Wang、Guang Shi
DOI:10.1149/1945-7111/abf180
日期:2021.5.1
lithium ion half-cells based on the polymer cathode and the lithium anode are assembled and the electrochemical properties are tested. Due to the high voltage of the DDP unit in the polymer backbone, lithium-ion half-cells based on PDDP-NI and PDDP-PI cathodes provide a high average discharge voltage of about 3.2 V. Moreover, the as-prepared polymer materials exhibit long-cycle performance, PDDP-NI remains
两种聚(芳胺-酰亚胺),聚(N,N,N',N'-四苯基-1,4-苯二胺萘二酰亚胺)(PDDP-NI)和聚(N,N,N',N'-四苯基-通过胺单体 N,N,N',N'-四苯基-1,4-苯二胺 (DDP) 与二酐单体 1,4 缩聚成功制备 1,4-苯二胺苝二酰亚胺 (PDDP-PI), 5,8-萘四甲酸二酐 (NTCDA) 或 3,4,9,10- 苝四甲酸二酐 (PTCDA)。聚合物中的 DDP 单元可以可逆地掺杂/去掺杂 PF 6 -阴离子,而萘二亚胺 (NI) 单元或苝二亚胺 (PI) 单元可以可逆地插入/脱出锂阳离子。组装基于聚合物正极和锂负极的锂离子半电池并测试其电化学性能。由于聚合物骨架中 DDP 单元的高电压,基于 PDDP-NI 和 PDDP-PI 阴极的锂离子半电池提供约 3.2 V 的高平均放电电压。 此外,所制备的聚合物材料表现出在长循环性能方面,PDDP-NI 在 10 C