Amphiphilic molecule-assisted perfluoro-alkanes electrolyte for low temperature lithium metal batteries

被引：2

作者：

Qin, Jian ^{[1
]}

Zhao, Yali ^{[1
]}

Meng, Xianjiao ^{[1
]}

Wang, Mengfan ^{[1
]}

Song, Zhiping ^{[1
]}

Ai, Xinping ^{[1
,2
]}

Zhan, Hui ^{[1
,2
]}

机构：

[1] Wuhan Univ, Coll Chem & Mol Sci, Hubei Key Lab Electrochem Power Sources, Wuhan 430072, Peoples R China

[2] Wuhan Univ, Engn Res Ctr Organosilicon Cpds & Mat, Minist Educ, Wuhan 430072, Peoples R China

来源：

CHEMICAL ENGINEERING JOURNAL | 2024年 / 496卷

关键词：

Low temperature; Weak solvation structure; Perfluorinated electrolyte; Lithium metal batteries; Nonflammable electrolyte; RECHARGEABLE BATTERIES; ENERGY; ANODE;

D O I：

10.1016/j.cej.2024.153818

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Low-temperature working is a big challenge for lithium metal batteries (LMBs), as the efficiency and dendrite growth problems are exacerbated at lower temperature, and meanwhile the impact of slow ion-transfer and difficult ion-desovation is intensified. Herein, the amphiphilic effect of hydrofluoroether was revealed, and fully utilized to construct a nonflammable perfluoro-alkanes electrolyte. With the well-regulated Li+ solvation and the purposedly tuned SEI, the electrolyte brought highly reversible Li deposition from - 60 degrees C to 60 degrees C. As a result, Li/LiFePO4 cell (1.5 mAh cm(-2)) with thin Li anode presented ultra-long cycling life. The work supplies a new design concept for low-temperature LMBs electrolyte.

引用

页数：13

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