Magnesium-Ion Cathode Materials Based on the Barite Structure. (19th June 2018)

• Record Type: Journal Article
• Authors: Hawthorne, Krista L; Liao, Chen; Lau, Ka-Cheong; Proffit, Danielle L.; Vaughey, John T.
• Is Part Of: ECS transactions. Volume 85:Number 13(2018)
• Page Start: 193
• Page End: 197
• Publication Date: 2018-06-19
• Subjects: Electrochemistry -- Periodicals; Electrochemistry; Periodicals; Electronic journals; Electronic journal; 541.37
• DOI: 10.1149/08513.0193ecst
• Languages: English
• ISSNs: 1938-5862

Abstract

Abstract : The barite structure (mineral: BaSO4 ) is a common structure type for alkaline earth metals and is known to exist with many different electrochemically active cations. In this study we evaluated the activity of the barite-type material BaCrO4 as a charged cathode in a standard Mg-ion cell configuration. Electrochemical evaluation of the material, prepared in two different ways, indicated a reversible insertion plateau around 1.0 V (vs Mg/Mg +2 ) corresponding to the approximate composition Mg0.1 [BaCrO4 ]. The low inherent electronic conductivity of these insoluble but molecular materials is thought to be the underlying cause of the poor electrochemical performance.