skip to main content

DOE PAGESDOE PAGES

Title: Fast kinetics of magnesium monochloride cations in interlayer-expanded titanium disulfide for magnesium rechargeable batteries

Magnesium rechargeable batteries potentially offer high-energy density, safety, and low cost due to the ability to employ divalent, dendrite-free, and earth-abundant magnesium metal anode. Despite recent progress, further development remains stagnated mainly due to the sluggish scission of magnesium-chloride bond and slow diffusion of divalent magnesium cations in cathodes. Here in this paper we report a battery chemistry that utilizes magnesium monochloride cations in expanded titanium disulfide. Combined theoretical modeling, spectroscopic analysis, and electrochemical study reveal fast diffusion kinetics of magnesium monochloride cations without scission of magnesium-chloride bond. The battery demonstrates the reversible intercalation of 1 and 1.7 magnesium monochloride cations per titanium at 25 and 60 °C, respectively, corresponding to up to 400 mAh g -1 capacity based on the mass of titanium disulfide. The large capacity accompanies with excellent rate and cycling performances even at room temperature, opening up possibilities for a variety of effective intercalation hosts for multivalent-ion batteries.
Authors:
 [1] ;  [1] ;  [1] ;  [2] ;  [3] ;  [4] ;  [5] ;  [5] ;  [1] ;  [1] ; ORCiD logo [1] ;  [1] ; ORCiD logo [6] ; ORCiD logo [4] ; ORCiD logo [7] ; ORCiD logo [2] ;  [3] ; ORCiD logo [8]
  1. Univ. of Houston, Houston, TX (United States). Dept. of Electrical and Computer Engineering & Materials Science and Engineering Program
  2. Vanderbilt Univ., Nashville, TN (United States). Dept. of Physics and Astronomy; Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Materials Science & Technology Division
  3. Texas A&M Univ., College Station, TX (United States). Dept. of Materials Science and Engineering
  4. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Advanced Light Source (ALS)
  5. Argonne National Lab. (ANL), Argonne, IL (United States). X-Ray Science Division
  6. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Materials Science & Technology Division
  7. Argonne National Lab. (ANL), Argonne, IL (United States). Chemical Sciences and Engineering Division
  8. Univ. of Houston, Houston, TX (United States). Dept. of Electrical and Computer Engineering & Materials Science and Engineering Program; Univ. of Houston, Houston, TX (United States). Texas Center for Superconductivity
Publication Date:
Grant/Contract Number:
AC02-05CH11231; AC02-06CH11357; FG02-09ER46554
Type:
Accepted Manuscript
Journal Name:
Nature Communications
Additional Journal Information:
Journal Volume: 8; Journal Issue: 1; Journal ID: ISSN 2041-1723
Publisher:
Nature Publishing Group
Research Org:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); US Department of the Navy, Office of Naval Research (ONR)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 25 ENERGY STORAGE
OSTI Identifier:
1398523