Toward the design of high voltage magnesium-lithium hybrid batteries using dual-salt electrolytes

Yingwen Cheng, Daiwon Choi, Kee Sung Han, Karl T. Mueller, Ji Guang Zhang, Vincent L. Sprenkle, Jun Liu, Guosheng Li

Research output: Contribution to journalArticlepeer-review

39 Scopus citations

Abstract

We report a design of high voltage magnesium-lithium (Mg-Li) hybrid batteries through rational control of the electrolyte chemistry, electrode materials and cell architecture. Prototype devices with a structure of Mg-Li/LiFePO4 (LFP) and Mg-Li/LiMn2O4 (LMO) have been investigated. A Mg-Li/LFP cell using a dual-salt electrolyte 0.2 M [Mg2Cl2(DME)4][AlCl4]2 and 1.0 M LiTFSI exhibits voltages higher than 2.5 V (vs. Mg) and a high specific energy density of 246 W h kg-1 under conditions that are amenable for practical applications. The successful demonstrations reported here could be a significant step forward for practical hybrid batteries.

Original languageEnglish (US)
Pages (from-to)5379-5382
Number of pages4
JournalChemical Communications
Volume52
Issue number31
DOIs
StatePublished - Apr 21 2016

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Chemistry(all)
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Materials Chemistry

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