Controlling the Intercalation Chemistry to Design High-Performance Dual-Salt Hybrid Rechargeable Batteries

Title
Controlling the Intercalation Chemistry to Design High-Performance Dual-Salt Hybrid Rechargeable Batteries
Authors
조재현Muratahan Aykol김수하정훈Chris Wolverton정경윤김광범조병원
Keywords
Hybrid Batteries; Dual Salt
Issue Date
2014-11
Publisher
Journal of the American Chemical Society
Citation
VOL 136, NO 46, 16116-16119
Abstract
We have conducted extensive theoretical and experimental investigations to unravel the origin of the electrochemical properties of hybrid Mg2+/Li+ rechargeable batteries at the atomistic and macroscopic levels. By revealing the thermodynamics of Mg2+ and Li+ co-insertion into the Mo6S8 cathode host using density functional theory calculations, we show that there is a threshold Li+ activity for the pristine Mo6S8 cathode to prefer lithiation instead of magnesiation. By precisely controlling the insertion chemistry using a dual-salt electrolyte, we have enabled ultrafast discharge of our battery by achieving 93.6% capacity retention at 20 C and 87.5% at 30 C, respectively, at room temperature.
URI
http://pubs.kist.re.kr/handle/201004/48847
ISSN
00027863
Appears in Collections:
KIST Publication > Article
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