Improved electrochemical performance of CuCrO2 anode with CNTs as conductive agent for lithium ion batteries

CuCrO2 was synthesized by a sol–gel technique. CuCrO2 anodes with common conductive agents (carbon black or acetylene black) show low discharge capacities. However, the electrochemical performances of CuCrO2 anodes are improved remarkably after replacing the ordinary conductive agent with carbon nan...

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Bibliographic Details
Published in:Materials letters 2013-04, Vol.97, p.113-116
Main Authors: Zhu, Xiao-Dong, Tian, Jing, Le, Shi-Ru, Zhang, Nai-Qing, Sun, Ke-Ning
Format: Article
Language:English
Subjects:
3D conductive network
Acetylene
Anodes
batteries
Carbon
carbon nano-tubes
CuCrO2
Cycles
Discharge
Discharge capacity
electrochemistry
electrodes
lithium
Lithium-ion batteries
Networks
Three dimensional
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Summary:CuCrO2 was synthesized by a sol–gel technique. CuCrO2 anodes with common conductive agents (carbon black or acetylene black) show low discharge capacities. However, the electrochemical performances of CuCrO2 anodes are improved remarkably after replacing the ordinary conductive agent with carbon nano-tubes (CNTs). The CCO–CNTs anode possesses the 436mAhg−1 (0.2C) of discharge capacity after the 80th cycle. The addition of CNTs contributed to the formation of a 3D conductive network. Such a networks structure has pivotal effects to improve the composite conductivity and restrain the volume variations during cycling processes, which collaboratively improve the discharge specific capacity and cycling performance. ► A 3D network provides good electrical conductivity and restrains volume variations. ► Discharge capacity of CCO–CNTs reaches 436mAhg−1 (0.2C) after the 80th cycle. ► CuCrO2 is a promising anode for lithium ion batteries.
ISSN:0167-577X
1873-4979
DOI:10.1016/j.matlet.2013.01.103