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题名: Carboxyl-conjugated phthalocyanines used as novel electrode materials with high specific capacity for lithium-ion batteries
作者: Chen, Jun1; Zhang, Qian1; Zeng, Min1; Ding, Nengwen1; Li, Zhifeng1; Zhong, Shengwen1; Zhang, Tao2; Wang, Shuangqing2; Yang, Guoqiang2
关键词: Phthalocyanine ; Lithium-ion battery ; Organic cathode ; Carboxyl compound ; Iodine doping ; Electrochemical performance
刊名: JOURNAL OF SOLID STATE ELECTROCHEMISTRY
发表日期: 2016-05-01
卷: 20, 期:5, 页:1285-1294
收录类别: SCI
英文摘要: A novel molecular model of carbonyl-substituted phthalocyanine compounds used as the cathode material in a lithium-ion battery is demonstrated. Tetra-carboxyl and octa-carboxyl groups are substituted onto a phthalocyanine-conjugated system. The conductivities of phthalocyanine compounds are effectively improved by I-2 doping, without affecting the capacity and energy density. Taking lithium as the counter-electrode, the electrochemical properties of the microparticles are investigated, and the electrochemical mechanism of carboxyl groups substituted with phthalocyanines is analyzed. The results indicate that carboxyl-substituted phthalocyanines have high specific capacities. After 20 or 50 cycles, they still retain capacities of about 300 and 500 mA center dot h/g for tetra-carboxyl- and octa-carboxyl-substituted phthalocyanines, respectively. The multiple carbonyl groups and the large numbers of electrons on the phthalocyanine-conjugated system are the two factors contributing to the high specific capacity.
语种: 英语
内容类型: 期刊论文
URI标识: http://ir.iccas.ac.cn/handle/121111/36047
Appears in Collections:光化学实验室_期刊论文

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作者单位: 1.Jiangxi Univ Sci & Technol, Sch Mat Sci & Engn, Key Lab Power Battery & Mat, Ganzhou 341000, Peoples R China
2.Chinese Acad Sci, Inst Chem, Key Lab Photochem, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China
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