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Title: Long-life Li/polysulphide batteries with high sulphur loading enabled by lightweight three-dimensional nitrogen/sulphur-codoped graphene sponge

Journal Article · · Nature Communications
DOI:https://doi.org/10.1038/ncomms8760· OSTI ID:1623994

Lithium–sulphur batteries with a high theoretical energy density are regarded as promising energy storage devices for electric vehicles and large-scale electricity storage. However, the low active material utilization, low sulphur loading and poor cycling stability restrict their practical applications. Herein, we present an effective strategy to obtain Li/polysulphide batteries with high-energy density and long-cyclic life using three-dimensional nitrogen/sulphur codoped graphene sponge electrodes. The nitrogen/sulphur codoped graphene sponge electrode provides enough space for a high sulphur loading, facilitates fast charge transfer and better immobilization of polysulphide ions. The hetero-doped nitrogen/sulphur sites are demonstrated to show strong binding energy and be capable of anchoring polysulphides based on first-principles calculations. As a result, a high specific capacity of 1,200 mAh g–1 at 0.2C rate, a high-rate capacity of 430 mAh g–1 at 2C rate and excellent cycling stability for 500 cycles with ~0.078% capacity decay per cycle are achieved.

Research Organization:
Ceramatec, Inc., West Valley City, UT (United States
Sponsoring Organization:
USDOE Advanced Research Projects Agency - Energy (ARPA-E); Robert A. Welch Foundation
Grant/Contract Number:
AR0000377; F-1535
OSTI ID:
1623994
Journal Information:
Nature Communications, Vol. 6, Issue 1; ISSN 2041-1723
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 868 works
Citation information provided by
Web of Science

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Eco-friendly synthesis of N,S co-doped hierarchical nanocarbon as a highly efficient metal-free catalyst for the reduction of nitroarenes journal January 2018
Molybdenum carbide nanostructures for electrocatalytic polysulfide conversion in lithium–polysulfide batteries journal January 2020
Nanostructured Metal Oxides and Sulfides for Lithium-Sulfur Batteries journal February 2017
High Rate Magnesium-Sulfur Battery with Improved Cyclability Based on Metal-Organic Framework Derivative Carbon Host journal January 2018
Electrocatalysis on Separator Modified by Molybdenum Trioxide Nanobelts for Lithium-Sulfur Batteries journal June 2018
Design Principles for Heteroatom-Doped Nanocarbon to Achieve Strong Anchoring of Polysulfides for Lithium-Sulfur Batteries journal May 2016
Hollow Carbon Nanobelts Codoped with Nitrogen and Sulfur via a Self‐Templated Method for a High‐Performance Sodium‐Ion Capacitor journal June 2019
3D cross-linking N-doped graphene framework for high sulfur nanocrystal storage journal May 2019
Self-Assembled Graphene-Based Architectures and Their Applications journal November 2017
Microwave-Assisted Synthesis of Highly-Crumpled, Few-Layered Graphene and Nitrogen-Doped Graphene for Use as High-Performance Electrodes in Capacitive Deionization journal December 2015
Polystyrene as Graphene Film and 3D Graphene Sponge Precursor journal November 2018
Effects of Electrospun Carbon Nanofibers’ Interlayers on High-Performance Lithium–Sulfur Batteries journal March 2017
Wheat Straw-Derived N-, O-, and S-Tri-doped Porous Carbon with Ultrahigh Specific Surface Area for Lithium-Sulfur Batteries journal June 2018