FEC Additive for Improved SEI Film and Electrochemical Performance of the Lithium Primary Battery

The solid electrolyte interphase (SEI) film plays a significant role in the capacity and storage performance of lithium primary batteries. The electrolyte additives are essential in controlling the morphology, composition and structure of the SEI film. Herein, fluoroethylene carbonate (FEC) is chose...

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Autores principales:	Xuan Zhou, Ping Li, Zhihao Tang, Jialu Liu, Shaowei Zhang, Yingke Zhou, Xiaohui Tian
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	fluoroethylene carbonate lithium primary battery lithium metal anode solid electrolyte interphase LiF Technology T
Acceso en línea:	https://doaj.org/article/e748c6b7c1164c8c8e8eafd4582a490d
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spelling	oai:doaj.org-article:e748c6b7c1164c8c8e8eafd4582a490d2021-11-25T17:25:47ZFEC Additive for Improved SEI Film and Electrochemical Performance of the Lithium Primary Battery10.3390/en142274671996-1073https://doaj.org/article/e748c6b7c1164c8c8e8eafd4582a490d2021-11-01T00:00:00Zhttps://www.mdpi.com/1996-1073/14/22/7467https://doaj.org/toc/1996-1073The solid electrolyte interphase (SEI) film plays a significant role in the capacity and storage performance of lithium primary batteries. The electrolyte additives are essential in controlling the morphology, composition and structure of the SEI film. Herein, fluoroethylene carbonate (FEC) is chosen as the additive, its effects on the lithium primary battery performance are investigated, and the relevant formation mechanism of SEI film is analyzed. By comparing the electrochemical performance of the Li/AlF<sub>3</sub> primary batteries and the microstructure of the Li anode surface under different conditions, the evolution model of the SEI film is established. The FEC additive can decrease the electrolyte decomposition and protect the lithium metal anode effectively. When an optimal 5% FEC is added, the discharge specific capacity of the Li/AlF<sub>3</sub> primary battery is 212.8 mAh g<sup>−1</sup>, and the discharge specific capacities are respectively 205.7 and 122.3 mAh g<sup>−1</sup> after storage for 7 days at room temperature and 55 °C. Compared to primary electrolytes, the charge transfer resistance of the Li/AlF<sub>3</sub> batteries with FEC additive decreases, indicating that FEC is a promising electrolyte additive to effectively improve the SEI film, increase discharge-specific capacities and promote charge transfer of the lithium primary batteries.Xuan ZhouPing LiZhihao TangJialu LiuShaowei ZhangYingke ZhouXiaohui TianMDPI AGarticlefluoroethylene carbonatelithium primary batterylithium metal anodesolid electrolyte interphaseLiFTechnologyTENEnergies, Vol 14, Iss 7467, p 7467 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	fluoroethylene carbonate lithium primary battery lithium metal anode solid electrolyte interphase LiF Technology T
spellingShingle	fluoroethylene carbonate lithium primary battery lithium metal anode solid electrolyte interphase LiF Technology T Xuan Zhou Ping Li Zhihao Tang Jialu Liu Shaowei Zhang Yingke Zhou Xiaohui Tian FEC Additive for Improved SEI Film and Electrochemical Performance of the Lithium Primary Battery
description	The solid electrolyte interphase (SEI) film plays a significant role in the capacity and storage performance of lithium primary batteries. The electrolyte additives are essential in controlling the morphology, composition and structure of the SEI film. Herein, fluoroethylene carbonate (FEC) is chosen as the additive, its effects on the lithium primary battery performance are investigated, and the relevant formation mechanism of SEI film is analyzed. By comparing the electrochemical performance of the Li/AlF<sub>3</sub> primary batteries and the microstructure of the Li anode surface under different conditions, the evolution model of the SEI film is established. The FEC additive can decrease the electrolyte decomposition and protect the lithium metal anode effectively. When an optimal 5% FEC is added, the discharge specific capacity of the Li/AlF<sub>3</sub> primary battery is 212.8 mAh g<sup>−1</sup>, and the discharge specific capacities are respectively 205.7 and 122.3 mAh g<sup>−1</sup> after storage for 7 days at room temperature and 55 °C. Compared to primary electrolytes, the charge transfer resistance of the Li/AlF<sub>3</sub> batteries with FEC additive decreases, indicating that FEC is a promising electrolyte additive to effectively improve the SEI film, increase discharge-specific capacities and promote charge transfer of the lithium primary batteries.
format	article
author	Xuan Zhou Ping Li Zhihao Tang Jialu Liu Shaowei Zhang Yingke Zhou Xiaohui Tian
author_facet	Xuan Zhou Ping Li Zhihao Tang Jialu Liu Shaowei Zhang Yingke Zhou Xiaohui Tian
author_sort	Xuan Zhou
title	FEC Additive for Improved SEI Film and Electrochemical Performance of the Lithium Primary Battery
title_short	FEC Additive for Improved SEI Film and Electrochemical Performance of the Lithium Primary Battery
title_full	FEC Additive for Improved SEI Film and Electrochemical Performance of the Lithium Primary Battery
title_fullStr	FEC Additive for Improved SEI Film and Electrochemical Performance of the Lithium Primary Battery
title_full_unstemmed	FEC Additive for Improved SEI Film and Electrochemical Performance of the Lithium Primary Battery
title_sort	fec additive for improved sei film and electrochemical performance of the lithium primary battery
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/e748c6b7c1164c8c8e8eafd4582a490d
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FEC Additive for Improved SEI Film and Electrochemical Performance of the Lithium Primary Battery

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