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Title: Towards Next Generation Lithium-Sulfur Batteries: Non-Conventional Carbon Compartments/Sulfur Electrodes and Multi-Scale Analysis

Journal Article · · Journal of the Electrochemical Society
 [1];  [2];  [3];  [3];  [3];  [4];  [2];  [3];  [4]
  1. Purdue Univ., West Lafayette, IN (United States). School of Chemical Engineering; TexasA&M University
  2. Texas A & M Univ., College Station, TX (United States). Department of Chemical Engineering
  3. Texas A & M Univ., College Station, TX (United States). Department of Mechanical Engineering
  4. Purdue Univ., West Lafayette, IN (United States). School of Chemical Engineering

In this work, a novel heterofunctional, bimodal-porous carbon morphology, termed the carbon compartment (CC), is utilized as a sulfur host as a lithium-sulfur battery cathode. A multi-scale model explores the physics and chemistry of the lithium-sulfur battery cathode. The CCs are synthesized by a rapid, low cost process to improve electrode-electrolyte interfacial contact and accommodate volumetric expansion associated with sulfide formation. The CCs demonstrate high sulfur loading (47 %-wt. S) and ca. 700 mAh g-1 reversible capacity with high coulombic efficiency due to their unique structures. Density functional theory and ab initio Molecular Dynamics characterize the interface between the C/S composite and electrolyte during the sulfur reduction mechanism. Stochastic realizations of 3D electrode microstructures are reconstructed based on representative SEM images to study the influence of solid sulfur loading and lithium sulfide precipitation on microstructural and electrochemical properties. A macroscale electrochemical performance model is developed to analyze the performance of lithium-sulfur batteries. The combined multi-scale simulation studies explain key fundamentals of sulfur reduction and its relation to the polysulfide shuttle mechanism: how the process is affected due to the presence of carbon substrate, thermodynamics of lithium sulfide formation and deposition on carbon, and microstructural effects on the overall cell performance.

Research Organization:
Texas A & M Univ., College Station, TX (United States). Perla B. Balbuena
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Vehicle Technologies Office (EE-3V)
Contributing Organization:
Texas A&M High Performance Computing Facilities, and Texas Advanced Computer Center
Grant/Contract Number:
EE0006832
OSTI ID:
1430231
Journal Information:
Journal of the Electrochemical Society, Journal Name: Journal of the Electrochemical Society Journal Issue: 5 Vol. 163; ISSN 0013-4651
Publisher:
The Electrochemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English

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Solvent-Mediated Li 2 S Electrodeposition: A Critical Manipulator in Lithium-Sulfur Batteries journal November 2018
Formation of Multilayer Graphene Domains with Strong Sulfur–Carbon Interaction and Enhanced Sulfur Reduction Zones for Lithium–Sulfur Battery Cathodes journal March 2018
Surface Functionalization of Carbon Architecture with Nano-MnO 2 for Effective Polysulfide Confinement in Lithium-Sulfur Batteries journal June 2018
Blocking Polysulfides in Graphene–Sulfur Cathodes of Lithium–Sulfur Batteries through Atomic Layer Deposition of Alumina journal May 2019
Electrochemical performance and modeling of lithium-sulfur batteries with varying carbon to sulfur ratios journal December 2018
Three-dimensional image based modelling of transport parameters in lithium–sulfur batteries journal January 2019
First-principles explorations of the electrochemical lithiation dynamics of a multilayer graphene nanosheet-based sulfur–carbon composite journal January 2018
Cationic shield mediated electrodeposition stability in metal electrodes journal January 2019
Mesoscale Physicochemical Interactions in Lithium–Sulfur Batteries: Progress and Perspective journal October 2017
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Perspective—Commercializing Lithium Sulfur Batteries: Are We Doing the Right Research? journal June 2017