Promotive effect of multi-walled carbon nanotubes on Co3O4 nanosheets and their application in lithium-ion battery

Progress in Natural Science: Materials International

Xiaogang Zhang¹  Ying Wu²  Yan Liu²  Chengkang Chang²  Dongyun Zhang² 

[1] College of Material Science and Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, Jiangsu 210016, China;School of Materials Science and Engineering, Shanghai Institute of Technology, Shanghai 200235, China;

关键词: Co3O4 nanosheets;    Multi-walled carbon nanotubes;    Hydrothermal method;    Anode material;    Lithium-ion batteries;   

DOI  :  10.1016/j.pnsc.2014.05.001

来源: DOAJ

【 摘 要 】

Co3O4/MWCNTs composites have been synthesized by a simple hydrothermal method using a surfactant (CTAB) and a precipitation agent (urea). The samples were characterized by XRD, SEM and BET methods. The electrochemical properties of the samples as anode materials for lithium batteries were studied by EIS and Galvanostatic measurements. The Co3O4/MWCNTs composites displayed higher capacity and better cycle performance in comparison with the Co3O4 nanosheets. The remarkable improvement of electrochemical performance within the hybrid composites is probably related to the addition of MWCNTs that possesses improved properties such as excellent electric conductivity and large surface area, which helps to alleviate the effect of volume change, shorten the distance of lithium ion diffusion, facilitate the transmission of electron and keep the structure stable.

【 授权许可】

Unknown