Premium
Copper Doped Li 3 VO 4 as Anode Material for Lithium‐ion Batteries
Author(s) -
Mulaudzi Isaac,
Zhang Yi,
Ndlovu Gebhu F.,
Wu Yuping,
Legodi Malebogo A.,
Ree Teunis
Publication year - 2020
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.202060380
Subject(s) - anode , materials science , electrochemistry , lithium (medication) , doping , conductivity , ion , copper , diffusion , analytical chemistry (journal) , chemical engineering , inorganic chemistry , electrode , metallurgy , chemistry , optoelectronics , thermodynamics , medicine , physics , organic chemistry , chromatography , engineering , endocrinology
Li 3 VO 4 has been considered as a promising anode material because of its high theoretical capacity (394mAh g −1 ) and zero strain during the charge and discharge processes. However, its electronic conductivity is low, which has led to an electrochemical performance unfavourable for practical application. In this work, copper‐doped Li 3 VO 4 is prepared by a simple and inexpensive sol‐gel method. The doped Li 3 VO 4 delivers high initial discharge and charge capacities of up to 63 mAh g −1 after 25 cycles for 5 % Cu‐doped material at a rate of 0.5 C. Conductive Cu is found to enable better Li + ion storage due to the improved electronic conductivity, Li ion diffusion, and structural stability, improving cycling and rate performance. This work provides some hints for preparing Li 3 VO 4 based anodes with high electrochemical performance.