Modifying the Interface between the Solvated Ionic Liquid Electrolyte and Positive Electrode to Boost Lithium-Ion Battery Performance
Modifying the Interface between the Solvated Ionic Liquid Electrolyte and Positive Electrode to Boost Lithium-Ion Battery Performance
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修改溶剂化离子液体电解质和正极之间的界面以提高锂离子电池性能
DOI:
10.1021/acsaem.2c01533
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发表时间:
2022
影响因子:
6.4
通讯作者:
Taro Hitosugi
中科院分区:
文献类型:
--
作者:
Jun Deng;Kazunori Nishio;Satoru Ichinokura;Yuki Watanabe;Kurei Edamura;Ryo Nakayama;Ryota Shimizu;Toru Hirahara;Taro Hitosugi
Ionic liquids are promising liquid electrolytes because of their wide potential window (high electrochemical stability) and high Li-ion conductivity. However, high electrical resistance at the interface between the electrolyte and electrode hinders their practical application in Li-ion batteries. Here, we report the low interfacial resistance between a solvated ionic liquid, tetraglyme-lithium bis(trifluoromethanesulfonyl)amide ([LiG4][TFSA]), and positive electrode LiCoO2. We demonstrate stable cycling in a battery using a Li3PO4buffer layer inserted at the interface of [LiG4][TFSA] and a positive electrode LiCoO2(001). Without inserting the buffer layer, the interface resistance drastically increases with repeated charge–discharge cycles, originating from the formation of a solid-electrolyte interphase (SEI) on the LiCoO2(001) surface; the interface resistance was 2.0 × 104Ω cm2after the 10th cycle. In contrast, the introduction of Li3PO4significantly improves the charge and discharge cyclability, suppresses SEI growth, and lowers the [LiG4][TFSA]–Li3PO4interface resistance to 4.5 × 102Ω cm2. These results highlight the importance of modifying the interface between the ionic liquid electrolyte and the positive electrode to boost battery performance.
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DOI:
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发表时间:
2016
期刊:
影响因子:
--
作者:
T. Yamaguchi;S. Seki他;関志朗;Shiro Seki
通讯作者:
Shiro Seki
DOI:
--
发表时间:
2019
期刊:
影响因子:
--
作者:
Shigeru Kobayashi;Ryota Shimizu;Kazunori Nishio;Yuki Watanabe;and Taro Hitosugi
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and Taro Hitosugi
影响因子:
15
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Yoshida, Kazuki;Nakamura, Megumi;Watanabe, Masayoshi
通讯作者:
Watanabe, Masayoshi
DOI:
--
发表时间:
2018
期刊:
影响因子:
--
作者:
村井 友海;水瀬 賢太;大島 康裕;Taro Hitosugi
通讯作者:
Taro Hitosugi