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Investigation on the storage performance of LiMn2O4 at elevated temperature with the mixture of electrolyte stabilizer

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Abstract

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 °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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Acknowlegments

The work was financially supported by the Major Special Programs of Science and Technology of Hunan Province (2011FJ1005), the key project of Natural Science Foundation of Hunan Province (no. 12JJ2005), innovative Project of Graduate in Hunan Province (1960–71131110033), and the National Natural Science Foundation of China (no. 51142001), which are greatly appreciated.

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Authors and Affiliations

  1. School of Metallurgical Science and Engineering, Central South University, Changsha, Hunan, 410083, People’s Republic of China

    Xianwen Wu, Xinhai Li, Zhixing Wang, Huajun Guo & Lizhi Xiong

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  1. Xianwen Wu
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  2. Xinhai Li
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  3. Zhixing Wang
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  4. Huajun Guo
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  5. Lizhi Xiong
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Correspondence to Xinhai Li.

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Wu, X., Li, X., Wang, Z. et al. Investigation on the storage performance of LiMn2O4 at elevated temperature with the mixture of electrolyte stabilizer. Ionics 18, 907–911 (2012). https://doi.org/10.1007/s11581-012-0801-1

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  • DOI: https://doi.org/10.1007/s11581-012-0801-1

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