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Title: Ultrathin dendrimer–graphene oxide composite film for stable cycling lithium–sulfur batteries

Journal Article · · Proceedings of the National Academy of Sciences of the United States of America
 [1];  [1];  [1];  [2];  [3];  [1];  [4];  [1];  [1];  [5];  [6];  [1];  [1];  [1]
  1. Yale Univ., West Haven, CT (United States). Dept. of Chemistry and Energy Sciences Inst.
  2. Yale Univ., West Haven, CT (United States). Dept. of Chemistry and Energy Sciences Inst.; Peking Univ., Beijing (China). College of Chemistry and Molecular Engineering
  3. Yale Univ., New Haven, CT (United States). Dept. of Mechanical Engineering and Materials Science
  4. Yale Univ., West Haven, CT (United States). Dept. of Chemistry and Energy Sciences Inst.; Southeast Univ., Jiangsu (China). School of Chemistry and Chemical Engineering
  5. Yale Univ., New Haven, CT (United States). Dept. of Mechanical Engineering and Materials Science and Center for Research on Interface Structures and Phenomena
  6. Peking Univ., Beijing (China). College of Chemistry and Molecular Engineering

Lithium–sulfur batteries (Li–S batteries) have attracted intense interest because of their high specific capacity and low cost, although they are still hindered by severe capacity loss upon cycling caused by the soluble lithium polysulfide intermediates. Although many structure innovations at the material and device levels have been explored for the ultimate goal of realizing long cycle life of Li–S batteries, it remains a major challenge to achieve stable cycling while avoiding energy and power density compromises caused by the introduction of significant dead weight/volume and increased electrochemical resistance. Here we introduce an ultrathin composite film consisting of naphthalimide-functionalized poly(amidoamine) dendrimers and graphene oxide nanosheets as a cycling stabilizer. Combining the dendrimer structure that can confine polysulfide intermediates chemically and physically together with the graphene oxide that renders the film robust and thin (<1% of the thickness of the active sulfur layer), the composite film is designed to enable stable cycling of sulfur cathodes without compromising the energy and power densities. As a result, our sulfur electrodes coated with the composite film exhibit very good cycling stability, together with high sulfur content, large areal capacity, and improved power rate.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
FG02-07ER15909
OSTI ID:
1498104
Journal Information:
Proceedings of the National Academy of Sciences of the United States of America, Vol. 114, Issue 14; ISSN 0027-8424
Publisher:
National Academy of Sciences, Washington, DC (United States)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 82 works
Citation information provided by
Web of Science

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Cited By (19)

Graphene in Lithium-Ion/Lithium-Sulfur Batteries book January 2019
Sulfur Immobilization by “Chemical Anchor” to Suppress the Diffusion of Polysulfides in Lithium-Sulfur Batteries journal December 2017
Programmed Design of a Lithium–Sulfur Battery Cathode by Integrating Functional Units journal July 2019
Trapping and Redistribution of Hydrophobic Sulfur Sols in Graphene-Polyethyleneimine Networks for Stable Li-S Cathodes journal August 2018
Conductive and Catalytic Triple-Phase Interfaces Enabling Uniform Nucleation in High-Rate Lithium-Sulfur Batteries journal October 2018
Electrocatalysis in Lithium Sulfur Batteries under Lean Electrolyte Conditions journal October 2018
Dual‐Function, Tunable, Nitrogen‐Doped Carbon for High‐Performance Li Metal–Sulfur Full Cell journal January 2019
A 3D Multifunctional Architecture for Lithium-Sulfur Batteries with High Areal Capacity journal April 2018
Solvent-Engineered Scalable Production of Polysulfide-Blocking Shields to Enhance Practical Lithium-Sulfur Batteries journal May 2018
Recent advances in functional modification of separators in lithium–sulfur batteries journal January 2018
Advances in sodium secondary batteries utilizing ionic liquid electrolytes journal January 2019
PAMAM dendrimers with a porphyrin core as highly selective binders of Li + in an alkaline mixture. A spectroscopic study journal January 2019
An atomic-confined-space separator for high performance lithium–sulfur batteries journal January 2020
Recent advances in polysulfide mediation of lithium-sulfur batteries via facile cathode and electrolyte modification journal August 2019
Amorphous MoS 3 as the sulfur-equivalent cathode material for room-temperature Li–S and Na–S batteries journal November 2017
Recent advances of polar transition-metal sulfides host materials for advanced lithium–sulfur batteries journal December 2018
Review—Solid Electrolytes for Safe and High Energy Density Lithium-Sulfur Batteries: Promises and Challenges journal June 2017
Electrocatalysis in Lithium Sulfur Batteries under Lean Electrolyte Conditions journal October 2018
Review : Solid Electrolytes for Safe and High Energy Density Lithium-Sulfur Batteries : Promises and Challenges text January 2018

Figures / Tables (6)


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