Paper Title:
A Study on the Electrochemical Properties of LiFePO4 Doping with Different Diameter MWCNTs
  Abstract

The LiFePO4/MWCNTs composite used as cathode was synthesized by ball milling. XRD and SEM experiments demonstrated that MWCNTs didn’t change the olivine structure of LiFePO4 and that MWCNTs decentralized into the grains of LiFePO4 and working as electric bridge improving the electrochemical properties of LiFePO4. The electrochemical performance of the composite electrodes with different MWNTs in diameter were studied by button cell. The result indicated that the composite with largest diameter MWNTs exhibited best electrochemical performance. The first charge-discharge specific capacity of the composite with MWNTs of 60-100nm in diameter were 136mAh/g-1 and 129 mAh/g-1 respectively at 0.1C rate under room temperature. The difference between charge-discharge platforms of the composite electrode was the least compared to the others. This phenomenon showed that the material had the largest chemical diffusion coefficient of lithium. At the same time, the capacity of the composite only lost 4.0% after 10 cycles and kept constant after 20 cycles.

  Info
Periodical
Advanced Materials Research (Volumes 311-313)
Chapter
New Energy Materials
Edited by
Zhongning Guo
Pages
1393-1397
DOI
10.4028/www.scientific.net/AMR.311-313.1393
Citation
Z. F. Zeng, H. Y. Zhang, X. D. Hu, "A Study on the Electrochemical Properties of LiFePO4 Doping with Different Diameter MWCNTs", Advanced Materials Research, Vols. 311-313, pp. 1393-1397, 2011
Online since
August 2011
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Sheng Kui Zhong, Yue Bin Xu, Yan Wei Li, Chang Jiu Liu, Yan Hong Li
Chapter 1: Materials Properties
Abstract:LiNi0.4Co0.2Mn0.4O2 samples was synthesized via urea co-precipitation method. The XRD, SEM and...
700
Authors: Jing Li, Hua Qing Xie, Yang Li
Chapter 9: New Energy Materials
Abstract:Nanocomposites supercapacitors electrodes are synthesized by homogeneously coating the nano-structured polypyrrole (PPy) on multi-walled...
1415
Authors: Fang Gu
Chapter 8: Energy Materials, Engineering Materials and Processing Technologies
Abstract:Spinel Li4Ti5O12 was prepared by a solution method. The structure and morphology of the samples were characterized by X-ray diffraction,...
1976
Authors: Li Feng Zhang, Guang Ming Wu, Guo Hua Gao, Hui Yu Yang
Abstract:Nano-porous V2O5 aerogel films were prepared by dip-coating vanadium oxide sol onto ITO substrate, using V2O5 powder, Benz alcohol,...
165
Authors: Na Chi, Jian Gang Li, Lei Wang, Jie Si Fu
Chapter 13: Optical/Electronic/Magnetic, New Functional and Energy Materials
Abstract:LiMn0.7Fe0.3PO4/C composite cathode material was prepared by using a solid state reaction method. The effects of annealing temperatures on...
2617