Properties of LiNi0.5Mn1.5O4 /Li Cell in Ionic Liquid Electrolyte Based on N-methyl-N-propylpiperidinium Bis(trifluoromethanesulfonyl)imide

Jing Mao; Ke Hua Dai; Yu Chun Zhai

doi:10.4028/www.scientific.net/AMR.391-392.978

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Properties of LiNi_0.5Mn_1.5O₄ /Li Cell in Ionic Liquid Electrolyte Based on N-methyl-N-propylpiperidinium Bis(trifluoromethanesulfonyl)imide
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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 391-392Properties of LiNi0.5Mn1.5O4 /Li Cell in Ionic...

Properties of LiNi_0.5Mn_1.5O₄ /Li Cell in Ionic Liquid Electrolyte Based on N-methyl-N-propylpiperidinium Bis(trifluoromethanesulfonyl)imide

Abstract:

LiNi_0.5Mn_1.5O₄ material was synthesized by PVP-assisted gel-combustion method and examined as a cathode material for lithium-ion batteries, working together with a room temperature ionic liquid electrolyte and a lithium metal anode. The LiTFSI-Pp₁₃TFSI ionic liquid electrolyte was obtained by dissolution of solid lithium bis(trifluoromethanesulfonyl) imide (LiTFSI) in liquid N-methyl-N-propylpiperidinium bis(trifluoromethanesulfonyl) amide (Pp₁₃TFSI). The LiNi_0.5- Mn_1.5O₄/LiTFSI-Pp₁₃TFSI/Li cell was tested by galvanostatic charging/discharging and compared with standard carbonate/LiPF₆ electrolyte. At low current (0.05 C) density, the LiNi_0.5Mn_1.5O₄/ LiTFSI-Pp₁₃TFSI/Li cell exhibited stable cycling for 11 cycles, but it degraded rapidly in subsequent cycles. Preliminary tests showed that both the cathode and anode interfacial reaction contributed to the rapid degradation.

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Advanced Materials Research (Volumes 391-392)

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978-981

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.391-392.978

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Online since:

December 2011

Authors:

Jing Mao, Ke Hua Dai, Yu Chun Zhai

Keywords:

Ionic Liquid (IL), LiNi_0.5Mn_1.5O₄, LiTFSI, Lithium-Ion Battery, Pp₁₃-TFSI

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