Single-Atom Chromium-Embedded N-Doped Graphene as a Multifunctional Separator Coating for Lithium–Sulfur Batteries
Abstract
Lithium–sulfur (Li–S) batteries offer a promising alternative to traditional lithium-ion batteries due to their high energy density, large capacity, cost advantages, and environmental benefits. However, their commercialization is impeded by challenges like the lithium polysulfide (LiPS) shuttle effect, necessitating advanced sulfur host materials and separator coatings for the effective trapping of LiPSs and enhancing the ion transfer. In this research, single-atom chromium-incorporated nitrogen-doped graphene (Cr@NG) is introduced as a novel separator coating, synthesized by an NaCl soft-template method. This material, as an efficient and economic alternative to other existing single-atom catalysts-based materials, combines high conductivity and catalytic activity, effectively suppressing the shuttle effect and enhancing sulfur conversion. First-principles calculations and electrochemical studies further demonstrate that Cr@NG significantly improves adsorption capabilities, capacity retention, rate capability, and cycling stability. The incorporation of chromium offers substantial benefits in electron transport and catalytic efficiency, establishing Cr@NG as a promising multifunctional separator coating for high-performance Li–S batteries.
Details
- Organisation(s)
-
Institute of Solid State Physics
Laboratory of Nano and Quantum Engineering
Institute of Physical Chemistry and Electrochemistry
- External Organisation(s)
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K.N. Toosi University of Technology (KNTU)
Shaanxi University of Science and Technology
Chinese Academy of Sciences (CAS)
Chongqing Institute of Green and Intelligent Technology
Anhui University
- Type
- Article
- Journal
- Batteries and Supercaps
- Volume
- 8
- Publication date
- 15.12.2025
- Publication status
- Published
- Peer reviewed
- Yes
- ASJC Scopus subject areas
- Energy Engineering and Power Technology, Electrical and Electronic Engineering, Electrochemistry
- Sustainable Development Goals
- SDG 7 - Affordable and Clean Energy
- Electronic version(s)
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https://doi.org/10.1002/batt.202500200 (Access:
Open
)
