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Carbonate Ester‐Based Sodium Metal Battery with High‐Capacity Retention at −50 °C Enabled by Weak Solvents and Electrodeposited Anode.

Authors :
Hu, Chao
Guo, Shan
Huang, Fei
Yang, Yi
Yan, Chong
Zhao, Chen‐Zi
Liang, Shuquan
Fang, Guozhao
Zhang, Qiang
Source :
Angewandte Chemie; Oct2024, Vol. 136 Issue 40, p1-11, 11p
Publication Year :
2024

Abstract

Sodium metal batteries (SMBs) have received increasing attention due to the abundant sodium resources and high energy density, but suffered from the sluggish interfacial kinetic and unstable plating/stripping of sodium anode at low temperature, especially when matched with ester electrolytes. Here, we develop a stable ultra‐low‐temperature SMBs with high‐capacity retention at −50 °C in a weak solvated carbonate ester‐based electrolyte, combined with an electrodeposited Na (Cu/Na) anode. The Cu/Na anode with electrochemically activated "deposited sodium" and stable inorganic‐rich solid electrolyte interphase (SEI) is favor for the fast Na+ migration, therefore accelerating the interfacial kinetic process. As a result, the Cu/Na||NaCrO2 battery exhibited the highest capacity retention (compared to room‐temperature capacity) in carbonate ester‐based SMBs (98.05 % at −25 °C, 91.3 % at −40 °C, 87.9 % at −50 °C, respectively). The cyclic stability of 350 cycles at −25 °C with a high energy efficiency of 96.15 % and 70 cycles at −50 °C can be achieved. Even in chill atmospheric environment with the fluctuant temperature, the battery can still operate over one month. This work provides a new opportunity for the development of low‐temperature carbonate ester‐based SMBs. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
00448249
Volume :
136
Issue :
40
Database :
Complementary Index
Journal :
Angewandte Chemie
Publication Type :
Academic Journal
Accession number :
179808566
Full Text :
https://doi.org/10.1002/ange.202407075