AgF预处理稳定化锂负极及其在锂氧气电池中的应用

doi:10.19799/j.cnki.2095-4239.2019.0208

储能科学与技术 ›› 2020, Vol. 9 ›› Issue (3): 807-812.doi: 10.19799/j.cnki.2095-4239.2019.0208

AgF预处理稳定化锂负极及其在锂氧气电池中的应用

卢天骄, 黄志梅, 谢美兰, 沈越()

华中科技大学材料科学与工程学院，湖北武汉 430074

收稿日期:2019-09-19 修回日期:2019-10-29 出版日期:2020-05-05 发布日期:2019-10-31
通讯作者: 沈越 E-mail:shenyue1213@hust.edu.cn
作者简介:卢天骄（1994—），女，硕士研究生，研究方向为锂负极保护、锂氧气电池，E-mail：m201670811@hust.edu.cn；
基金资助:
国家自然科学基金项目(51672098)

Lithium anode stabilization via AgF pretreatment and its application in a Li-oxygen battery

LU Tianjiao, HUANG Zhimei, XIE Meilan, SHEN Yue()

School of Materials Science and Engineering，Huazhong University of Science and Technology，Wuhan 430074，Hubei，China

Received:2019-09-19 Revised:2019-10-29 Online:2020-05-05 Published:2019-10-31
Contact: Yue SHEN E-mail:shenyue1213@hust.edu.cn

摘要/Abstract

摘要：

目前，金属锂负极的稳定性是限制锂氧气电池发展的一大难题。由此，构筑人工固态电解质（SEI）膜保护金属锂因具有效果明显、可自修复、易于实现等优点而受到广泛关注。本工作利用AgF在二甲亚砜溶剂中可溶解，且可以被金属锂还原为不溶物表面膜的特性，通过AgF溶液对金属锂进行预处理，可在锂负极表面原位生成一层基于LiF/Ag的人工SEI膜。该SEI膜能够有效抑制锂枝晶的生长，提高锂负极的循环稳定性，将锂氧气电池的循环寿命延长4倍。

关键词: 锂氧气电池, 锂负极, 氟化银, SEI膜

Abstract:

The stability of Li-metal anodes seriously limits the development of Li-oxygen batteries (LOBs). An artificial solid electrolyte interface (SEI) film constructed on Li is effectively protective, self-healing, and easily achievable. In this work, an artificial SEI film based on LiF/Ag was formed in situ on the surface of the Li-metal anode by a facile pretreatment with silver fluoride (AgF) solution. The film significantly suppressed the growth of Li-dendrites, improved the stability of Li-metal anodes, and prolonged the cycle life of the LOB more than fourfold.

Key words: lithium-oxygen battery, lithium anode, silver fluoride, SEI film

中图分类号:

TM 911.41

卢天骄, 黄志梅, 谢美兰, 沈越. AgF预处理稳定化锂负极及其在锂氧气电池中的应用[J]. 储能科学与技术, 2020, 9(3): 807-812.

LU Tianjiao, HUANG Zhimei, XIE Meilan, SHEN Yue. Lithium anode stabilization via AgF pretreatment and its application in a Li-oxygen battery[J]. Energy Storage Science and Technology, 2020, 9(3): 807-812.

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AgF预处理稳定化锂负极及其在锂氧气电池中的应用

Lithium anode stabilization via AgF pretreatment and its application in a Li-oxygen battery

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