An Electrochemically Activated Nanofilm for Sustainable Mg Anode with Fast Charge Transfer Kinetics. Issue 12 (10th December 2021)

• Record Type: Journal Article
• Authors: Wang, Hui; Ryu, Jaegeon; McClary, Scott A.; Long, Daniel M.; Zhou, Mingxia; Engelhard, Mark H.; Zou, Liangfeng; Quinn, Joseph; Kotula, Paul; Han, Kee Sung; Jia, Haiping; Wang, Chongmin; Assary, Rajeev Surendran; Zavadil, Kevin R.; Murugesan, Vijayakumar; Mueller, Karl T.; Shao, Yuyan
• Is Part Of: Journal of the Electrochemical Society. Volume 168:Issue 12(2021)
• Publication Date: 2021-12-10
• Subjects: Electrochemistry -- Periodicals; 541.3705
• DOI: 10.1149/1945-7111/ac3d2c
• Languages: English
• ISSNs: 0013-4651

Abstract

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∙cm 2 ) and low non-time-sensitive interfacial film resistance (ca. 5 Ω∙cm 2 ) for active Mg species.