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Title: Synthesis and Characterization of MgCr 2S 4 Thiospinel as a Potential Magnesium Cathode

Abstract

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 MgTi 2S 4. This article describes the direct synthesis and structural and electrochemical characterization of MgCr 2S 4, 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.

Authors:
 [1];  [2];  [3];  [2];  [4];  [3]; ORCiD logo [2]; ORCiD logo [1]
  1. Northwestern Univ., Evanston, IL (United States). Joint Center for Energy Storage Research (JCESR) and Dept. of Chemistry
  2. 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
  3. Northwestern Univ., Evanston, IL (United States). Joint Center for Energy Storage Research (JCESR); Univ. of Illinois, Chicago, IL (United States). Dept. of Physics
  4. Pacific Northwest National Lab. (PNNL), Richland, WA (United States). Environmental Molecular Sciences Lab. (EMSL)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1473678
Grant/Contract Number:  
[AC02-06CH11357]
Resource Type:
Accepted Manuscript
Journal Name:
Inorganic Chemistry
Additional Journal Information:
[ Journal Volume: 57; Journal Issue: 14]; Journal ID: ISSN 0020-1669
Publisher:
American Chemical Society (ACS)
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE; Magnesium Battery; Thiospinel

Citation Formats

Wustrow, Allison, Key, Baris, Phillips, Patrick J., Sa, Niya, Lipton, Andrew S., Klie, Robert F., Vaughey, John T., and Poeppelmeier, Kenneth R. Synthesis and Characterization of MgCr2S4 Thiospinel as a Potential Magnesium Cathode. United States: N. p., 2018. Web. doi:10.1021/acs.inorgchem.8b01417.
Wustrow, Allison, Key, Baris, Phillips, Patrick J., Sa, Niya, Lipton, Andrew S., Klie, Robert F., Vaughey, John T., & Poeppelmeier, Kenneth R. Synthesis and Characterization of MgCr2S4 Thiospinel as a Potential Magnesium Cathode. United States. doi:10.1021/acs.inorgchem.8b01417.
Wustrow, Allison, Key, Baris, Phillips, Patrick J., Sa, Niya, Lipton, Andrew S., Klie, Robert F., Vaughey, John T., and Poeppelmeier, Kenneth R. Tue . "Synthesis and Characterization of MgCr2S4 Thiospinel as a Potential Magnesium Cathode". United States. doi:10.1021/acs.inorgchem.8b01417. https://www.osti.gov/servlets/purl/1473678.
@article{osti_1473678,
title = {Synthesis and Characterization of MgCr2S4 Thiospinel as a Potential Magnesium Cathode},
author = {Wustrow, Allison and Key, Baris and Phillips, Patrick J. and Sa, Niya and Lipton, Andrew S. and Klie, Robert F. and Vaughey, John T. and Poeppelmeier, Kenneth R.},
abstractNote = {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.},
doi = {10.1021/acs.inorgchem.8b01417},
journal = {Inorganic Chemistry},
number = [14],
volume = [57],
place = {United States},
year = {2018},
month = {7}
}

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Works referencing / citing this record:

CSD 1860541: Experimental Crystal Structure Determination: Non-CSD Structure
dataset, August 2018