Abstract

The prototypes of lithium batteries with organic electrode materials based on two lithium salts of polyhydroquionones containing azomethine groups and, for a comparison, materials based on the original Schiff base are developed and characterized. Poly[3,6-bis(iminomethylphenylene-1,2-diol)dilithium] and poly[3-(iminomethyl)-6-methylimino-N-(1-phenyl-4-diyl)benzene-1,2-dioldilithium] are synthesized and studied for the first time. For these structures, quantum chemical simulations are carried out for calculating the energy of the addition of lithium atoms which can proceed either to the nitrogen atom of the azomethine group or to the oxygen atom of the carbonyl group. It is shown experimentally that the best capacity and stability characteristics are demonstrated by the polymer poly[3,6-bis(iminomethylphenylene-1,2-diol)dilithium with the initial capacity of 140 mA h/g in the cycling interval of 0.7–4.1 V vs. Li⁺/Li, which makes it a promising cathodic material for lithium batteries.

中文翻译：

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偶氮甲胺基作为有机锂正极的聚氢醌二锂盐的合成与研究

摘要

开发并表征了带有有机电极材料的锂电池原型，该原型基于含偶氮甲碱基团的聚氢醌的两种锂盐，并进行了比较，基于原始的席夫碱。聚[3,6-双（亚氨基甲基亚苯基-1,2-二醇）二锂]和聚[3-（亚氨基甲基）-6-甲基亚氨基-N-（1-苯基-4-二基）苯-1,2-二醇二锂]是第一次进行合成和研究。对于这些结构，进行量子化学模拟以计算锂原子加成的能量，该锂原子可进行至偶氮甲碱基团的氮原子或羰基基团的氧原子。实验证明，聚合物聚[3,6-双（亚氨基甲基亚苯基-1，⁺ / Li，这使其成为锂电池的有前途的阴极材料。