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Redox-Active Supramolecular Polymer Binders for Lithium–Sulfur Batteries That Adapt Their Transport Properties in Operando

Journal Article · · Chemistry of Materials
 [1];  [2];  [2];  [3]
  1. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Joint Center for Energy Storage Research
  2. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Energy Technologies Area; Univ. of California, Berkeley, CA (United States). Dept. of Chemical and Biomolecular Engineering
  3. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Joint Center for Energy Storage Research; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Molecular Foundry
π-Stacked perylene bisimide (PBI) molecules are implemented here as highly networked, redox-active supramolecular polymer binders in sulfur cathodes for lightweight and energy-dense Li-S batteries. We show that the in operando reduction and lithiation of these PBI binders sustainably reduces Li-S cell impedance relative to nonredox active conventional polymer binders. This lower impedance enables high-rate cycling in Li-S cells with excellent durability, a critical step toward unlocking the full potential of Li-S batteries for electric vehicles and aviation.
Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
1377549
Journal Information:
Chemistry of Materials, Journal Name: Chemistry of Materials Journal Issue: 20 Vol. 28; ISSN 0897-4756
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English

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A Review of Functional Binders in Lithium-Sulfur Batteries journal October 2018
A Robust, Water-Based, Functional Binder Framework for High-Energy Lithium-Sulfur Batteries journal June 2017
A Toolbox for Lithium-Sulfur Battery Research: Methods and Protocols journal June 2017
Small Molecules Make a Big Difference: A Solvent-Controlled Strategy for Building Robust Conductive Network Structures in High-Capacity Electrode Composites journal April 2018
Recent Advances in Applying Vulcanization/Inverse Vulcanization Methods to Achieve High-Performance Sulfur-Containing Polymer Cathode Materials for Li-S Batteries journal August 2018
Housing Sulfur in Polymer Composite Frameworks for Li–S Batteries journal February 2019
Molecular understanding of polyelectrolyte binders that actively regulate ion transport in sulfur cathodes journal December 2017
A robust network binder with dual functions of Cu 2+ ions as ionic crosslinking and chemical binding agents for highly stable Li–S batteries journal January 2018
Synergistic Effect between Poly(3,4-ethylenedioxythiophene)-poly(styrene sulfonate) Coated Sulfur Nano-Composites and Poly(vinylidene difluoride) on Lithium-Sulfur Battery journal January 2018