Journal
IONICS
Volume 18, Issue 9, Pages 907-911Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s11581-012-0801-1
Keywords
Lithium manganese oxide; Electrolyte; Storage performance; Additive
Funding
- Major Special Programs of Science and Technology of Hunan Province [2011FJ1005]
- Natural Science Foundation of Hunan Province [12JJ2005]
- innovative Project of Graduate in Hunan Province [1960-71131110033]
- National Natural Science Foundation of China [51142001]
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In order to investigate the effect of different electrolytes of LiPF6-based and LiPF6-based with the mixed additives of ethanolamine and heptamethyldisilazane on the storage performance of LiMn2O4, the commercial LiMn2O4 are added into these different electrolytes for storing deliberately at 60 A degrees C in air for 4 h. The results show that the electrolyte with additives can prevent LiMn2O4 from being eroded by HF to a certain extent, and improve the storage performance of the material. The initial discharge capacities are 97.7 and 88.4 mAh g(-1) at 0.1 and 1 C, respectively, which are much higher than that 84.4 and 63.6 mAh g(-1) of LiMn2O4 stored in the electrolyte without additives. Moreover, the former LiMn2O4 retains 89.1 % of its initial discharge capacity at 1 C after 150 cycles, while this is not up to 84 % for the latter.
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