Nanochain LiMn2O4 as ultra-fast cathode material for aqueous rechargeable lithium batteries

Nanochain LiMn2O4 was prepared by a starch-assisted sol–gel method. Its electrochemical behavior as a cathode material for aqueous rechargeable lithium batteries (ARLBs) was characterized by cyclic voltaammograph, capacity measurement and cycling test. Results show that the nanochain LiMn2O4 has an...

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Bibliographic Details
Published in:Electrochemistry communications 2011-02, Vol.13 (2), p.205-208
Main Authors: Tang, W., Tian, S., Liu, L.L., Li, L., Zhang, H.P., Yue, Y.B., Bai, Y., Wu, Y.P., Zhu, K.
Format: Article
Language:English
Subjects:
Applied sciences
Aqueous rechargeable lithium battery (ARLB)
Cathode
Charge capability
Direct energy conversion and energy accumulation
Electrical engineering. Electrical power engineering
Electrical power engineering
Electrochemical conversion: primary and secondary batteries, fuel cells
Exact sciences and technology
LiMn2O4
Nanochain
Ultra-fast
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Summary:Nanochain LiMn2O4 was prepared by a starch-assisted sol–gel method. Its electrochemical behavior as a cathode material for aqueous rechargeable lithium batteries (ARLBs) was characterized by cyclic voltaammograph, capacity measurement and cycling test. Results show that the nanochain LiMn2O4 has an ultra-fast charge capability. It presents a reversible capacity of 110mAh/g at 4.5C and 95mAh/g even at 91C in 0.5mol/l Li2SO4 aqueous electrolyte. When charged at 136C, 84% capacity could be obtained. In addition, its cycling behavior is also very good. After 200cycles at 4.5C, there is no evident capacity fading.
ISSN:1388-2481
1873-1902
DOI:10.1016/j.elecom.2010.12.015