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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
Author(s)
Kang, Sung-JinLim, Sung-ChulKim, HyeonjiHeo, Jongwook W.Hwang, SunwookJang, MinchulYang, DookyongHong, Seung-TaeLee, Hochun
DGIST Authors
Kang, Sung-JinLim, Sung-ChulKim, HyeonjiHeo, Jongwook W.Hwang, SunwookJang, MinchulYang, DookyongHong, Seung-TaeLee, Hochun
Issued Date
2017-04
Type
Article
Article Type
Article
Keywords
ETHYLENE CARBONATECATHODE MATERIALDEPOSITIONCHLORIDESYSTEMSPERFORMANCEELECTRODESCOMPLEXSALTS
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
Related Researcher
  • 홍승태 Hong, Seung-Tae
  • Research Interests Magnesium; calcium; and zinc ion batteries; lithium all-solid-state batteries; Inorganic materials discovery; Solid state chemistry; Crystallography; Mg; Ca; Zn 이온 이차전지; 리튬 전고체전지; 신 무기재료 합성; 고체화학; 결정화학
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Appears in Collections:
Department of Energy Science and Engineering Battery Materials Discovery Laboratory 1. Journal Articles
Department of Energy Science and Engineering Electrochemistry Laboratory for Sustainable Energy(ELSE) 1. Journal Articles

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