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Title: Sulfur-Embedded Activated Multichannel Carbon Nanofiber Composites for Long-Life, High-Rate Lithium-Sulfur Batteries

Journal Article · · Advanced Energy Materials
 [1];  [2];  [2];  [1]
  1. University of Texas, Austin, TX (United States)
  2. Seoul National University (Korea)

Despite the 3–5 fold higher energy density than the conventional Li–ion cells at a lower cost, commercialization of Li–S batteries is hindered by the insulating nature of sulfur and the dissolution of intermediate polysulfides (Li2SX, 4 < X ≤ 8) into the electrolyte. The authors demonstrate here multichannel carbon nanofibers that are composed of parallel mesoporous channels connected with micropores as sulfur containment. In addition, hydroxyl functional groups are formed on the carbon surface through a chemical activation to enhance the interaction between sulfur and carbon. In the sulfur embedded composite, the mesoporous multichannel enhances the active material utilization and sulfur loading, while the micropores act as a reaction chamber for sulfur component and trap site for polysulfide with the assistance of the functional groups. Here, this sulfur–carbon composite electrode with 2.2 mg cm–2 sulfur displays excellent performance with high rate capability (initial capacity of 1351 mA h g–1 at C/5 rate and 847 mA h g–1 at 5C rate), maintaining 920 mA h g–1 even after 300 cycles (a decay of 0.07% per cycle). Furthermore, a stable reversible capacity of as high as ≈1100 mA h g–1 is realized with a higher sulfur loading of 4.6 mg cm–2.

Research Organization:
Univ. of Texas, Austin, TX (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division
Grant/Contract Number:
SC0005397
OSTI ID:
1533071
Journal Information:
Advanced Energy Materials, Vol. 7, Issue 5; ISSN 1614-6832
Publisher:
WileyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 184 works
Citation information provided by
Web of Science

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Emerging Functional Porous Polymeric and Carbonaceous Materials for Environmental Treatment and Energy Storage journal November 2019
A Bifunctional Perovskite Promoter for Polysulfide Regulation toward Stable Lithium-Sulfur Batteries journal November 2017
Current Status and Future Prospects of Metal–Sulfur Batteries journal May 2019
Polyaniline Enriched Flexible Carbon Nanofibers with Core-Shell Structure for High-Performance Wearable Supercapacitors journal October 2017
In Situ Polymerization of Nanostructured Conductive Polymer on 3D Sulfur/Carbon Nanofiber Composite Network as Cathode for High-Performance Lithium-Sulfur Batteries journal February 2018
Sulfur Immobilizer by Nanoscale TiO 2 Trapper Deposited on Hierarchical Porous Carbon and Graphene for Cathodes of Lithium-Sulfur Batteries journal February 2018
Novel 2D Sb 2 S 3 Nanosheet/CNT Coupling Layer for Exceptional Polysulfide Recycling Performance journal June 2018
Highly Dispersed Cobalt Clusters in Nitrogen‐Doped Porous Carbon Enable Multiple Effects for High‐Performance Li–S Battery journal January 2020
Hierarchical N-Rich Carbon Sponge with Excellent Cycling Performance for Lithium-Sulfur Battery at High Rates journal March 2018
Porous Carbon Hosts for Lithium–Sulfur Batteries journal December 2018
Honeycomb-like Nitrogen and Sulfur Dual-Doped Hierarchical Porous Biomass-Derived Carbon for Lithium-Sulfur Batteries journal March 2017
Electrolyte Evolution Propelling the Development of Nonlithium Metal–Sulfur Batteries journal May 2019
Polar and Nonpolar Matrix Consisting of Twined Multiwalled Carbon Nanotube and High Nitrogen‐Doped Porous Carbon Derived from Ionic Liquid for Stable Li‐S Battery journal May 2019
Review of Carbon Materials for Lithium-Sulfur Batteries journal February 2018
Nozzle-Less Electrospun Nitrogen-Doped Hollow Carbon Nanofibers as Enhanced Sensing Platform for Carbendazim Electrochemical Detection journal February 2019
Recent Advances in Hollow Porous Carbon Materials for Lithium–Sulfur Batteries journal February 2019
1D Carbon‐Based Nanocomposites for Electrochemical Energy Storage journal August 2019
A 3D Multifunctional Architecture for Lithium-Sulfur Batteries with High Areal Capacity journal April 2018
Low-content Ni-doped CoS2 embedded within N,P-codoped biomass-derived carbon spheres for enhanced lithium/sodium storage journal February 2019
Porous nitrogen-doped carbon/MnO coaxial nanotubes as an efficient sulfur host for lithium sulfur batteries journal September 2018
Structural Design of Lithium–Sulfur Batteries: From Fundamental Research to Practical Application journal June 2018
In situ sulfur loading in graphene-like nano-cell by template-free method for Li–S batteries journal January 2018
A high-efficiency N/P co-doped graphene/CNT@porous carbon hybrid matrix as a cathode host for high performance lithium–sulfur batteries journal January 2017
Influence of morphology of monolithic sulfur–poly(acrylonitrile) composites used as cathode materials in lithium–sulfur batteries on electrochemical performance journal January 2019
A separator-based lithium polysulfide recirculator for high-loading and high-performance Li–S batteries journal January 2018
Multi-functional nanowall arrays with unrestricted Li + transport channels and an integrated conductive network for high-areal-capacity Li–S batteries journal January 2018
Current-density dependence of Li 2 S/Li 2 S 2 growth in lithium–sulfur batteries journal January 2019
Covalent fixing of sulfur in metal–sulfur batteries journal January 2020
3D nitrogen-doped hierarchical porous carbon framework for protecting sulfur cathode in lithium–sulfur batteries journal January 2019
Hierarchical porous Fe/N doped carbon nanofibers as host materials for high sulfur loading Li–S batteries journal January 2019
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Hierarchical N-doping germanium/carbon nanofibers as anode for high-performance lithium-ion and sodium-ion batteries journal October 2019
Carbon/Gelatin Microcapsules for Sulfur Cathode: A Micro-Reactor Suppressing “Shuttle Effect” journal January 2019
Flexible Carbon Nanotube Modified Separator for High-Performance Lithium-Sulfur Batteries journal July 2017
Lotus Root-Like Nitrogen-Doped Carbon Nanofiber Structure Assembled with VN Catalysts as a Multifunctional Host for Superior Lithium–Sulfur Batteries journal December 2019