A 4 V Li-Ion Battery using All-Spinel-Based Electrodes

Title
A 4 V Li-Ion Battery using All-Spinel-Based Electrodes
Authors
오인환정경윤정훈기굴람 알리정민기모비눌선양국
Keywords
battery; conversion anode; full cell; Li-ion; spinel phases
Issue Date
2018-07
Publisher
ChemSusChem
Citation
VOL 11, NO 13-2170
Abstract
Boosting the performance of rechargeable lithium-ion batteries (LIBs) beyond the state-of-the-art is mandatory toward meeting the future energy requirements of the consumer mass market. The replacement of conventional graphite anodes with conversion-type metal-oxide anodes is one progressive approach toward achieving this goal. Here, a LIB consisting of a highcapacity spinel NiMn2O4 anode and a high-voltage spinel Li-Ni0.5Mn1.5O4 cathode was proposed. Polyhedral-shaped NiMn2O4 powder was prepared from a citrate precursor via the sol-gel method. Electrochemical tests showed that the NiMn2O4 in a half-cell configuration could deliver reversible capacities of 750 and 303 mAhg@1 at 0.1 and 3C rates. Integrating the NiMn2O4 anode into a full-cell configuration provided an estimated energy density of 506 Whkg@1 (vs. cathode mass) upon 100 cycles and excellent cycling performance over 150 cycles at the 0.1C rate, which can be considered promising in terms of satisfying the demands for high energy densities in large-scale applications.
URI
http://pubs.kist.re.kr/handle/201004/67836
ISSN
1864-5631
Appears in Collections:
KIST Publication > Article
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