Journal Article
Journal of The Electrochemical Society, vol. 168, iss. 12, pp. 120519, 2021
Authors
Hui Wang, Jaegeon Ryu, Scott A. McClary, Daniel M. Long, Mingxia Zhou, Mark H. Engelhard, Liangfeng Zou, Joseph Quinn, Paul Kotula, Kee Sung Han, Haiping Jia, Chongmin Wang, Rajeev Surendran Assary, Kevin R. Zavadil, Vijayakumar Murugesan, Karl T. Mueller, Yuyan Shao
Abstract
Highly reversible Mg plating/stripping is key for rechargeable Mg batteries and has typically been successfully demonstrated using transient electrochemical techniques such as cyclic voltammetry measurements. However, little effort has been invested in studying the stability of the electrode/electrolyte interface over an extended time. We report here the development of an in situ generated surface film for Mg anodes based on electrodeposited bismuth (E_Bi). This film improves the interfacial stability of Mg in contact with the electrolyte, particularly over an extended time, and possesses fast charge-transfer kinetics (<30 Ω∙cm2) and low non-time-sensitive interfacial film resistance (ca. 5 Ω∙cm2) for active Mg species.
