Journal
NANO-MICRO LETTERS
Volume 9, Issue 2, Pages -Publisher
SHANGHAI JIAO TONG UNIV PRESS
DOI: 10.1007/s40820-016-0123-3
Keywords
High-voltage cathode; LiNi0.5Mn1.5O4; Lithium-ion battery; Cycling stability; Platform voltage
Funding
- foundation on the Creative Research Team Construction Promotion Project of Beijing Municipal Institutions
- Science and Technology Foundation [ykj-2016-00161]
- International Research Promotion Program (IRPR) of Osaka University
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High-voltage lithium-ion batteries (HVLIBs) are considered as promising devices of energy storage for electric vehicle, hybrid electric vehicle, and other high-power equipment. HVLIBs require their own platform voltages to be higher than 4.5 V on charge. Lithium nickel manganese spinel LiNi0.5Mn1.5O4 (LNMO) cathode is the most promising candidate among the 5 V cathode materials for HVLIBs due to its flat plateau at 4.7 V. However, the degradation of cyclic performance is very serious when LNMO cathode operates over 4.2 V. In this review, we summarize some methods for enhancing the cycling stability of LNMO cathodes in lithium-ion batteries, including doping, cathode surface coating, electrolyte modifying, and other methods. We also discuss the advantages and disadvantages of different methods.
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