Compatibility of a Conventional Non-aqueous Magnesium Electrolyte with a High Voltage V₂O₅ Cathode and Mg Anode

Journal Article · Sat Aug 01 00:00:00 EDT 2015 · Sandia journal manuscript; Not yet accepted for publication

OSTI ID:1427247

Sa, Niya ^[1]; Proffit, Danielle L. ^[1]; Lipson, Albert L. ^[1]; Liu, Miao ^[2]; Gautam, Gopalakrishnan Sai ^[3]; Hahn, Nathan ^[4]; Feng, Zhenxing ^[1]; Fister, Timothy T. ^[1]; Ren, Yang ^[1]; Sun, Cheng-Jun ^[1]; Vaughey, John T. ^[1]; Liao, Chen ^[1]; Fenter, Paul A. ^[1]; Ceder, Gerbrand ^[3]; Zavadil, Kevin R. ^[4]; Burrell, Anthony K. ^[1]

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1. Argonne National Lab. (ANL), Argonne, IL (United States)
2. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
3. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
4. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

A major roadblock for magnesium ion battery development is the availability of an electrolyte that can deposit Mg reversibly and at the same time is compatible with a high voltage cathode. We report a prospective full magnesium cell utilizing a simple, non-aqueous electrolyte composed of high concentration magnesium bis(trifluoromethane sulfonyl)imide in diglyme, which is compatible with a high voltage vanadium pentoxide (V₂O₅) cathode and a Mg metal anode. For this system, plating and stripping of Mg metal can be achieved with magnesium bis(trifluoromethane sulfonyl)imide in diglyme electrolyte over a wide concentration range, however, reversible insertion of Mg into V₂O₅ cathode can only be attained at high electrolyte concentrations. Reversible intercalation of Mg into V₂O₅ is characterized and confirmed by X-ray diffraction, X-ray absorption near edge spectroscopy and energy dispersive spectroscopy.

• Research Organization: Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
• DOE Contract Number: AC04-94AL85000
• OSTI ID: 1427247
• Report Number(s): SAND--2015-7298J; 604021
• Journal Information: Sandia journal manuscript; Not yet accepted for publication, Journal Name: Sandia journal manuscript; Not yet accepted for publication; ISSN 9999-0014
• Publisher: Sandia
• Country of Publication: United States
• Language: English