一种具有适度工作温度和增强性能的基于无机熔盐电解质的锂-二氧化碳电池。

An inorganic molten salt electrolyte-based Li-CO battery with moderate working temperature and enhanced performance.

作者信息

Sun Xinyi, Wang Di, Wen Zhang, Li Wei, Zhou Haoshen, He Ping

机构信息

Center of Energy Storage Materials & Technology, College of Engineering and Applied Sciences, Jiangsu Key Laboratory of Artificial Functional Materials, National Laboratory of Solid State Microstructures and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, P. R. China.

Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, P. R. China.

出版信息

Chem Commun (Camb). 2024 Aug 13;60(66):8772-8775. doi: 10.1039/d4cc02878c.

DOI:10.1039/d4cc02878c

PMID:39076153

Abstract

Herein, a binary inorganic molten salt electrolyte based on lithium bis(fluorosulfonyl)imide (LiFSI) and potassium bis(fluorosulfonyl)imide (KFSI) is applied to Li-CO batteries that can operate under 80 °C. Benefiting from the intrinsic nonvolatility, electrochemical stability, raised ionic conductivity, sufficient solubility and safety, the molten electrolyte endows the Li-CO battery with a large discharge capacity of 4612 mA h g and superior rate capability. The introduction of the Ru@Super P carbon cathode further optimizes the discharge capacity (9503 mA h g), overpotential (1.15 V), and rate capability.

摘要

在此，一种基于双（氟磺酰）亚胺锂（LiFSI）和双（氟磺酰）亚胺钾（KFSI）的二元无机熔盐电解质被应用于可在80℃下运行的锂-二氧化碳电池。受益于其固有的非挥发性、电化学稳定性、提高的离子电导率、足够的溶解性和安全性，这种熔融电解质赋予锂-二氧化碳电池4612 mA h g的大放电容量和优异的倍率性能。Ru@Super P碳阴极的引入进一步优化了放电容量（9503 mA h g）、过电位（1.15 V）和倍率性能。