Journal
ELECTROCHIMICA ACTA
Volume 54, Issue 23, Pages 5363-5367Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2009.04.019
Keywords
LiMn2O4; Carbon; Hydrothermal; Lithium-ion battery; Rate capability
Categories
Funding
- National Natural Science Foundation of China [29925310, 20473068, 20433060]
- National Basic Research Program of China [2007CB209702]
Ask authors/readers for more resources
A spinel LiMn2O4/C composite was synthesized by hydrothermally treating a precursor of manganese oxide/carbon (MO/C) composite in 0.1 M LiOH solution at 180 degrees C for 24 h, where the precursor was prepared by reducing potassium permanganate with acetylene black (AB). The AB in the precursor serves as the reducing agent to synthesize the LiMn2O4 during the hydrothermal process; the excess of AB remains in the hydrothermal product, forming the LiMn2O4/C composite, where the remaining AB helps to improve the electronic conductivity of the composite. The contact between LiMn2O4 and C in our composite is better than that in the physically mixed LiMn2O4/C material. The electrochemical performance of the LiMn2O4/C composite was investigated; the material delivered a high capacity of 83 mAh g(-1) and remained 92% of its initial capacity after 200 cycles at a Current density of 2 A g(-1), indicating its excellent rate capability as well as good cyclic performance. (C) 2009 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available