Synthesis and Characterization of MgCr2S4 Thiospinel as a Potential Magnesium Cathode
Journal Article
·
· Inorganic Chemistry
- Northwestern Univ., Evanston, IL (United States). Joint Center for Energy Storage Research (JCESR) and Dept. of Chemistry
- Northwestern Univ., Evanston, IL (United States). Joint Center for Energy Storage Research (JCESR); Argonne National Lab. (ANL), Argonne, IL (United States). Chemical Sciences and Engineering Division
- Northwestern Univ., Evanston, IL (United States). Joint Center for Energy Storage Research (JCESR); Univ. of Illinois, Chicago, IL (United States). Dept. of Physics
- Pacific Northwest National Lab. (PNNL), Richland, WA (United States). Environmental Molecular Sciences Lab. (EMSL)
Magnesium-ion batteries are a promising energy storage technology because of their higher theoretical energy density and lower cost of raw materials. Among the major challenges has been the identification of cathode materials that demonstrate capacities and voltages similar to lithium-ion systems. Thiospinels represent an attractive choice for new Mg-ion cathode materials owing to their interconnected diffusion pathways and demonstrated high cation mobility in numerous systems. Reported magnesium thiospinels, however, contain redox inactive metals such as scandium or indium, or have low voltages, such as MgTi2S4. This article describes the direct synthesis and structural and electrochemical characterization of MgCr2S4, a new thiospinel containing the redox active metal chromium and discusses its physical properties and potential as a magnesium battery cathode. However, as chromium(III) is quite stable against oxidation in sulfides, removing magnesium from the material remains a significant challenge. Finally, early attempts at both chemical and electrochemical demagnesiation are discussed.
- Research Organization:
- Argonne National Laboratory (ANL), Argonne, IL (United States); Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
- Sponsoring Organization:
- National Science Foundation (NSF); USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); USDOE Office of Science (SC), Biological and Environmental Research (BER)
- Grant/Contract Number:
- AC02-06CH11357; AC05-76RL01830
- OSTI ID:
- 1473678
- Alternate ID(s):
- OSTI ID: 1843411
OSTI ID: 1573919
- Report Number(s):
- PNNL-SA--135174; 146202
- Journal Information:
- Inorganic Chemistry, Journal Name: Inorganic Chemistry Journal Issue: 14 Vol. 57; ISSN 0020-1669
- Publisher:
- American Chemical Society (ACS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
MgSc 2 Se 4 —A Magnesium Solid Ionic Conductor for All‐Solid‐State Mg Batteries?
|
journal | April 2019 |
| Recent Progress on Layered Cathode Materials for Nonaqueous Rechargeable Magnesium Batteries | journal | October 2019 |
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