A safe and non-flammable sodium metal battery based on an ionic liquid electrolyte

Sun, Hao1; Zhu, Guanzhou1; Xu, Xintong1,2; Liao, Meng3,4; Li, Yuan-Yao1,5; Angell, Michael1; Gu, Meng6; Zhu, Yuanmin6,7; Hung, Wei Hsuan1,8,9; Li, Jiachen1; Kuang, Yun1,10,11; Meng, Yongtao1; Lin, Meng-Chang12; Peng, Huisheng3,4; Dai, Hongjie1

2019-07-24

10.1038/s41467-019-11102-2

Nature Communications   影响因子和分区

2041-1723

Rechargeable sodium metal batteries with high energy density could be important to a wide range of energy applications in modern society. The pursuit of higher energy density should ideally come with high safety, a goal difficult for electrolytes based on organic solvents. Here we report a chloroaluminate ionic liquid electrolyte comprised of aluminium chloride/1-methyl-3-ethylimidazolium chloride/sodium chloride ionic liquid spiked with two important additives, ethylaluminum dichloride and 1-ethyl-3-methylimidazolium bis(fluorosulfonyl) imide. This leads to the first chloroaluminate based ionic liquid electrolyte for rechargeable sodium metal battery. The obtained batteries reached voltages up to similar to 4 V, high Coulombic efficiency up to 99.9%, and high energy and power density of similar to 420 Wh kg(-1) and similar to 1766 W kg(-1), respectively. The batteries retained over 90% of the original capacity after 700 cycles, suggesting an effective approach to sodium metal batteries with high energy/high power density, long cycle life and high safety.

SCI

英语

NI期刊

其他

National Science Foundation[ECCS-1542152]

Science & Technology - Other Topics

Multidisciplinary Sciences

WOS:000476877400001

NATURE PUBLISHING GROUP

Web of Science

1.Stanford Univ, Dept Chem, Stanford, CA 94305 USA
2.Tsinghua Univ, Sch Aerosp Engn, Beijing 100084, Peoples R China
3.Fudan Univ, Dept Macromol Sci, State Key Lab Mol Engn Polymers, Shanghai 200438, Peoples R China
4.Fudan Univ, Adv Mat Lab, Shanghai 200438, Peoples R China
5.Natl Chung Cheng Univ, Dept Chem Engn, Chiayi 62102, Taiwan
6.Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen 518055, Guangdong, Peoples R China
7.Southern Univ Sci & Technol, Acad Adv Interdisciplinary Studies, Shenzhen 518055, Peoples R China
8.Feng Chia Univ, Dept Mat Sci & Engn, Taichung 40724, Taiwan
9.Natl Cent Univ, Inst Mat Sci & Engn, Taoyuan 32001, Taiwan
10.Beijing Univ Chem Technol, State Key Lab Chem Resource Engn, Beijing 100029, Peoples R China
11.Beijing Univ Chem Technol, Beijing Adv Innovat Ctr Soft Matter Sci & Engn, Beijing 100029, Peoples R China
12.Shandong Univ Sci & Technol, Coll Elect Engn & Automat, Qingdao 266590, Shandong, Peoples R China

Sun, Hao,Zhu, Guanzhou,Xu, Xintong,et al. A safe and non-flammable sodium metal battery based on an ionic liquid electrolyte[J]. Nature Communications,2019,10.

Sun, Hao.,Zhu, Guanzhou.,Xu, Xintong.,Liao, Meng.,Li, Yuan-Yao.,...&Dai, Hongjie.(2019).A safe and non-flammable sodium metal battery based on an ionic liquid electrolyte.Nature Communications,10.

Sun, Hao,et al."A safe and non-flammable sodium metal battery based on an ionic liquid electrolyte".Nature Communications 10(2019).