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Non-Grignard and Lewis Acid-Free Sulfone Electrolytes for Rechargeable Magnesium Batteries

Title
Non-Grignard and Lewis Acid-Free Sulfone Electrolytes for Rechargeable Magnesium Batteries
Authors
Kang, SJ[Kang, Sung-Jin]Lim, SC[Lim, Sung-Chul]Kim, H[Kim, Hyeonji]Heo, JW[Heo, Jongwook W.]Hwang, S[Hwang, Sunwook]Jang, M[Jang, Minchul]Yang, D[Yang, Dookyong]Hong, ST[Hong, Seung-Tae]Lee, H[Lee, Hochun]
DGIST Authors
Kang, SJ[Kang, Sung-Jin]; Lim, SC[Lim, Sung-Chul]; Kim, H[Kim, Hyeonji]; Heo, JW[Heo, Jongwook W.]; Hwang, S[Hwang, Sunwook]; Hong, ST[Hong, Seung-Tae]; Lee, H[Lee, Hochun]
Issue Date
2017-04-11
Citation
Chemistry of Materials, 29(7), 3174-3180
Type
Article
Article Type
Article
Keywords
Anodic StabilitiesCathode MaterialCation ComplexChemical StabilityChlorideCycle PerformanceCycling EfficiencyDeposition ProcessesElectric BatteriesElectrodesElectrodesElectrolytesEthylene CarbonateLithium Ion BatteriesOrganic CathodesPerformanceRechargeable Magnesium BatterySaltsSecondary BatteriesSingle Crystal X Ray Diffraction AnalysisSingle CrystalsSolventscathodesSulfone ElectrolytesSystemsX Ray Diffraction Analysis
ISSN
0897-4756
Abstract
A major challenge for developing rechargeable Mg-ion batteries (MIB) is the lack of suitable electrolytes. We report herein dialkyl sulfones as non-Grignard and Lewis acid-free MIB electrolytes. In particular, a dipropyl sulfone (DPSO)/tetrahydrofuran (THF) (1/1, v/v) solution with MgCl2 salt exhibits high ionic conductivity (1.1 mS cm-1 at 30 °C), Mg cycling efficiency (>90%), and anodic stability (ca. 3.0 V vs Mg). As evidenced by single crystal X-ray diffraction analysis, a novel [Mg(DPSO)6]2+ cation complex balanced by two [MgCl3(THF)]- anions is identified in the DPSO/THF solution. The DPSO/THF electrolyte also enables excellent cycle performance (>300 cycles) of a Chevrel phase Mo6S8 cathode and displays a decent compatibility with an organic cathode (3,4,9,10-perylenetetracarboxylic dianhydride, PTCDA). Along with the superior electrochemical properties of the DPSO/THF electrolyte, its innate chemical stability and eco-friendly nature make it a promising MIB electrolyte. © 2017 American Chemical Society.
URI
http://hdl.handle.net/20.500.11750/4197
DOI
10.1021/acs.chemmater.7b00248
Publisher
American Chemical Society
Files:
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Collection:
Energy Systems EngineeringElectrochemistry Laboratory for Sustainable Energy(ELSE)1. Journal Articles
Energy Systems EngineeringDiscovery Lab(Batteries & Materials Discovery Laboratory)1. Journal Articles


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