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Title: Intercalation Pseudocapacitance of Exfoliated Molybdenum Disulfide for Ultrafast Energy Storage

In this study, we report intercalation pseudocapacitance of 250 F g -1 for exfoliated molybdenum disulfide (MoS 2) in non-aqueous electrolytes that contain lithium ions. The exfoliated MoS 2 shows surface-limited reaction kinetics with high rate capability up to 3 min of charge or discharge. The intercalation pseudocapacitance originates from the extremely fast kinetics due to the enhanced ionic and electronic transport enabled by the slightly expanded layer structure as well as the metallic 1T-phase. The exfoliated MoS 2 could be also used in a Li-Mg-ion hybrid capacitor, which shows full cell specific capacitance of 240 F g -1.
Authors:
 [1] ;  [1] ;  [1] ;  [2] ;  [3] ;  [4]
  1. University of Houston, TX (United States). Department of Electrical & Computer Engineering and Materials Science and Engineering Program
  2. Morgan State University, Baltimore, MD (United States). Department of Physics and Engineering Physics
  3. Brookhaven National Lab. (BNL), Upton, NY (United States). Sustainable Energy Technologies Department
  4. University of Houston, TX (United States). Department of Electrical & Computer Engineering and Materials Science and Engineering Program and Texas Centre for Superconductivity
Publication Date:
Report Number(s):
BNL-112700-2016-JA
Journal ID: ISSN 2199-692X
Grant/Contract Number:
SC00112704
Type:
Accepted Manuscript
Journal Name:
ChemNanoMat
Additional Journal Information:
Journal Volume: 2; Journal Issue: 7; Journal ID: ISSN 2199-692X
Publisher:
Wiley
Research Org:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Vehicle Technologies Office (EE-3V)
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE; 36 MATERIALS SCIENCE; Energy storage; Intercalation pseudocapacitance; Molybdenum disulphide; Exfoliated structure; Supercapacitor
OSTI Identifier:
1347281