金属有机聚合物基负极材料的制备及其储锂性能Q

The preparation of metal organic polymer-based negative materials and its lithium storage properties

摘要:

为了寻求优异电化学性能的新型金属有机聚合物基负极材料，以偏苯三甲酸作为有机配体和六水硝酸钴进行配位，通过水热法合成了一种新型的钴基金属有机聚合物（Co-MOP）。在空气气氛下，对Co-MOP分别以500 ℃、600 ℃、700 ℃高温煅烧获得相应的Co-MOP-500、Co-MOP-600、Co-MOP-700衍生材料。Co-MOP衍生材料用作锂离子电池负极材料进行了研究。电化学测试结果显示Co-MOP-600展现出了优异的电化学性能。在100 mA/g的电流密度下，Co-MOP-600电极的首圈放电比容量达到1818.5 mAh/g，循环100圈后比容量还能维持1308.5 mAh/g。

Abstract:

In order to find a new type of metal-organic polymer-based anode material with excellent electrochemical performance, a new type of cobalt-based metal-organic polymer (Co-MOP) was synthesized by hydrothermal method with trimellitic acid as the organic ligand and cobalt nitrate hexahydrate. Co-MOP was calcined at 500 ℃, 600 ℃ and 700 ℃ under air atmosphere to obtain the corresponding Co-MOP-500, Co-MOP-600, and Co-MOP-700 derivative materials. Co-MOP derived materials have been studied as anode materials for lithium-ion batteries. The electrochemical test results show that Co-MOP-600 exhibits excellent electrochemical performance. At a current density of 100 mA/g, the first discharge specific capacity of the Co-MOP-600 electrode reaches 1818.5 mAh/g, and the specific capacity can be maintained at 1308.5 mAh/g after 100 cycles.