Mo 3 S 13 Chalcogel: A High-Capacity Electrode for Conversion-Based Li-Ion Batteries.

Autor: Islam T; Department of Chemistry, Physics, and Atmospheric Sciences, Jackson State University, 39217, Jackson, MS, USA., Chandra Roy S; Department of Chemistry, Physics, and Atmospheric Sciences, Jackson State University, 39217, Jackson, MS, USA., Bayat S; Department of Chemistry & Center for Applied Energy Research, University of Kentucky, 40506-0055, Lexington, KY, USA., Adigo Weret M; Department of Chemistry, Physics, and Atmospheric Sciences, Jackson State University, 39217, Jackson, MS, USA., Hoffman JM; X-ray Science Division, Advanced Photon Source, Argonne National Laboratory, 60439, Argonne, Illinois, USA., Rao KR; Department of Chemistry & Center for Applied Energy Research, University of Kentucky, 40506-0055, Lexington, KY, USA., Sawicki C; Electrification and Energy Infrastructures Division, Oak Ridge National Laboratory, Hardin Valley Campus, 37830, Knoxville, TN, USA., Nie J; Department of Chemistry, Physics, and Atmospheric Sciences, Jackson State University, 39217, Jackson, MS, USA., Alam R; Department of Chemistry, Physics, and Atmospheric Sciences, Jackson State University, 39217, Jackson, MS, USA., Oketola O; Department of Chemistry, Physics, and Atmospheric Sciences, Jackson State University, 39217, Jackson, MS, USA., Donley CL; Department of Chemistry, University of North Carolina at Chapel Hill, 27599-3290, Chapel Hill, NC, USA., Kumbhar A; Department of Chemistry, University of North Carolina at Chapel Hill, 27599-3290, Chapel Hill, NC, USA., Feng R; Canadian Light Source, S7 N 2 V3, Saskatoon, Saskatchewan, Canada., Wiaderek KM; X-ray Science Division, Advanced Photon Source, Argonne National Laboratory, 60439, Argonne, Illinois, USA., Risko C; Department of Chemistry & Center for Applied Energy Research, University of Kentucky, 40506-0055, Lexington, KY, USA., Amin R; Electrification and Energy Infrastructures Division, Oak Ridge National Laboratory, Hardin Valley Campus, 37830, Knoxville, TN, USA., Islam SM; Department of Chemistry, Physics, and Atmospheric Sciences, Jackson State University, 39217, Jackson, MS, USA.
Jazyk: angličtina
Zdroj: ChemSusChem [ChemSusChem] 2024 Jun 10; Vol. 17 (11), pp. e202400084. Date of Electronic Publication: 2024 Apr 19.
DOI: 10.1002/cssc.202400084
Abstrakt: Despite large theoretical energy densities, metal-sulfide electrodes for energy storage systems face several limitations that impact the practical realization. Here, we present the solution-processable, room temperature (RT) synthesis, local structures, and application of a sulfur-rich Mo 3 S 13 chalcogel as a conversion-based electrode for lithium-sulfide batteries (LiSBs). The structure of the amorphous Mo 3 S 13 chalcogel is derived through operando Raman spectroscopy, synchrotron X-ray pair distribution function (PDF), X-ray absorption near edge structure (XANES), and extended X-ray absorption fine structure (EXAFS) analysis, along with ab initio molecular dynamics (AIMD) simulations. A key feature of the three-dimensional (3D) network is the connection of Mo 3 S 13 units through S-S bonds. Li/Mo 3 S 13 half-cells deliver initial capacity of 1013 mAh g -1 during the first discharge. After the activation cycles, the capacity stabilizes and maintains 312 mAh g -1 at a C/3 rate after 140 cycles, demonstrating sustained performance over subsequent cycling. Such high-capacity and stability are attributed to the high density of (poly)sulfide bonds and the stable Mo-S coordination in Mo 3 S 13 chalcogel. These findings showcase the potential of Mo 3 S 13 chalcogels as metal-sulfide electrode materials for LiSBs.
(© 2024 Wiley-VCH GmbH.)
Databáze: MEDLINE
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