Abstract

Cathode materials of lithium-ion batteries can be efficiently and quickly obtained by solution combustion synthesis (SCS) from nitrate solutions of d-elements and lithium in the presence of organic complexing agents such as glycine and citric acid. However, during the storage of weakly acidic nitric acid solutions of manganese, nickel, and cobalt, after the addition of glycine and citric acid, a pink precipitate forms, which violates the stoichiometry of the initial solution. Thermal and X-ray structural analysis, as well as chemical analysis to determine the carbon content, show that the precipitate is manganese citrate of the composition Mn(HC₆H₅O₇)H₂O. It is found that the composition of manganese citrate does not depend on the ratio of the amount of citric acid and metal nitrates in the working solution.

中文翻译：

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由溶液合成的含锰和柠檬酸的阴极材料的沉淀物组成的研究

摘要

在甘氨酸和柠檬酸等有机络合剂的存在下，通过d元素和锂的硝酸盐溶液的固溶燃烧合成（SCS），可以高效，快速地获得锂离子电池的正极材料。但是，在锰，镍和钴的弱酸性硝酸溶液中，添加甘氨酸和柠檬酸后会形成粉红色沉淀，这违反了初始溶液的化学计量。通过热分析和X射线结构分析以及确定碳含量的化学分析表明，沉淀物是组成为Mn（HC ₆ H ₅ O ₇）H _2的柠檬酸锰。O.发现柠檬酸锰的组成不取决于工作溶液中柠檬酸和金属硝酸盐的量之比。