Volume 42, Issue 19 pp. 2370-2380
Comprehensive Report

Rational Designing MxSy@C (M=Ni, Co, Zn, Cu, Mn) Composites with Controlled Polysuifides Shuttling Behaviors towards Advanced Stable Room Temperature Na-S Batteries

Wei Huang

Wei Huang

State Key Laboratory of Environment-Friendly Energy Materials, School of Materials and Chemistry, Center of Analysis and Characterization, Southwest University of Science and Technology, Mianyang, Sichuan, 621010 China

These authors contributed equally.

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Yumeng Chen

Yumeng Chen

Guizhou Provincial Key Laboratory for Cathode Materials of New Energy Battery, Tongren, Guizhou, 554300 China

These authors contributed equally.

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Jing Chen

Jing Chen

College of Material and Chemical Engineering, Tongren University, Tongren, Guizhou, 554300 China

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Wei Shi

Wei Shi

College of Material and Chemical Engineering, Tongren University, Tongren, Guizhou, 554300 China

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Guangliang Xua

Corresponding Author

Guangliang Xua

State Key Laboratory of Environment-Friendly Energy Materials, School of Materials and Chemistry, Center of Analysis and Characterization, Southwest University of Science and Technology, Mianyang, Sichuan, 621010 China

E-mail: [email protected], [email protected]Search for more papers by this author
Yingchang Yang

Corresponding Author

Yingchang Yang

College of Material and Chemical Engineering, Tongren University, Tongren, Guizhou, 554300 China

E-mail: [email protected], [email protected]Search for more papers by this author
First published: 27 May 2024
Citations: 4

Dedicated to the Special Issue of Batteries.

Comprehensive Summary

Room-temperature sodium-sulfur (RT-Na/S) batteries display attractive potential in large-scale energy-storage, but their practical application was still restricted by the serious dissolution of polysulfides. Herein, supported by the constructing of interface engineering, the metal sulfide-carbon nanocomposite can be prepared with considerable electrochemical properties. Utilizing the double-helix structure of carrageenan-metal hydrogels as precursors, in-situ metal sulfide (MxSy) nanostructure/3D carbon aerogels (3D CAs) can be successfully constructed. Importantly, with the assistance of the vulcanization process, 3D carbon architecture was maintained in the composites and acted as a skeleton to optimize their structural stability. As the cathode of RT-Na/S batteries, ZnS/S@C and NiS2/S@C delivered an excellent cycling stability and rate performance (179.8 mAh·g−1 at 20 A·g−1 after 10000 cycling for ZnS/S@C, 220.3 mAh·g−1 at 10 A·g−1 after 3000 cycling for NiS2/S@C). The detailed investigation of mechanism revealed that the powerful adsorption for Na2S4 originated from 3D metal sulfide-carbon structure. The well-designed architecture of sulfide-carbon composites servers as an electrocatalyst to alleviate the shuttle effect of polysulfides, resulting in the long-term electrochemical stability. Given this, the work is expected to provide promising insights for designing advanced cathode materials for RT-Na/S batteries.

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