Paper Title:
Rare Earth Element Aliovalent Doping Substitution and Electrochemical Performance of LiFe1-x NdxPO4
  Abstract

LiFe1-xNdxPO4 /C cathode material has been synthesized by solid-state reaction. The structure and electrochemical performances of LiFe1-xNdxPO4 /C(x = 0 - 0.08) have been studied by XRD, FE-SEM, EIS and galvanostatic charge-discharge. The magnetization curve of LiFe1-xNdxPO4/C sample is measured by SQUID (Superconducting Quantum Interference Device) to examine if Fe3+ ion exists in LiFe1-xNdxPO4/C. The results show that a small amount of aliovalent Nd3+-dopant substitution on Fe+2 can effectively reduce the particle size of LiFePO4/C. The cell parameters of LiFe1-xNdxPO4 (x = 0.04 - 0.08) are calculated on Si internal standard, and LiFe1-xNdxPO4/C has the same olivine structure as LiFePO4, and delivers the highest discharge capacity of 165.2 mAh•g−1 at 0.2 C rate and the capacity retention rate is 92.8 % after 100 cycles. The charge transfer resistance decreases with adding glucose and Nd3+ ion. The measured theoretical capacity of 168.65 mAh∙g-1 is obtained. All the results imply that aliovalent doping substitution on Fe site in LiFePO4 is tolerant.

  Info
Periodical
Materials Science Forum (Volumes 654-656)
Main Theme
Edited by
Jian-Feng Nie and Allan Morton
Pages
2883-2886
DOI
10.4028/www.scientific.net/MSF.654-656.2883
Citation
M. S. Zhao, L. Zhang, "Rare Earth Element Aliovalent Doping Substitution and Electrochemical Performance of LiFe1-x NdxPO4 ", Materials Science Forum, Vols. 654-656, pp. 2883-2886, 2010
Online since
June 2010
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: Jong Uk Kim, Jin Kyu Kim, Jae Won Choi, Yeon Hwa Kim, Jou Hyeon Ahn, Guk-Tae Kim, Dae Kyoo Jun, Hal Bon Gu
Abstract:The purpose of this research is to develop tin oxide electrode for lithium ion polymer battery. We have investigated cyclic voltammetry and...
606
Authors: Jun Li, Yan Zhou, Yu Ying Zheng, Sheng He Tang, Da Guang Li
Abstract:Carbon-doped LiFePO4/C cathode materials for lithium power batteries were prepared by liquid-state precipitation reaction. Their...
302
Authors: Ying Sun, Jian Feng Huang, Li Yun Cao, Jian Peng Wu
Chapter 1: Novel Processing and Manufacturing
Abstract:Olivine LiFePO4 and LiFePO4-C composite cathode materials were prepared by microwave hydrothermal process using...
199
Authors: Ya Juan Bian, Meng Yang, Xiang Yu Zhao, Li Qun Ma, Chuan Wei Jin, Yi Ding, Xiao Dong Shen
Abstract:Cu2O/Cu composite particles were successfully synthesized by a novel facile template-free chemical reduction route at room...
28
Authors: Hong Quan Liu, Fei Xiang Hao, Feng Lin Yao, Yi Jie Gu, Yun Bo Chen
Abstract:LiFePO4 compound has been paid considerable attention as a promising positive electrode material. In this work, LiFePO4 compound was...
46