材料科学技术(英文版)2024，Vol.188Issue(21) ：98-104.DOI:10.1016/j.jmst.2023.11.063

High entropy alloy nanoparticles dual-decorated with nitrogen-doped carbon and carbon nanotubes as promising electrocatalysts for lithium-sulfur batteries

Yujie Ma Yilun Ren Dongyue Sun Biao Wang Hao Wu Haifeng Bian Jiangdong Cao Xueyu Cao Feng Ding Jiahao Lu Xiangkang Meng
材料科学技术(英文版)2024，Vol.188Issue(21) ：98-104.DOI:10.1016/j.jmst.2023.11.063
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High entropy alloy nanoparticles dual-decorated with nitrogen-doped carbon and carbon nanotubes as promising electrocatalysts for lithium-sulfur batteries

Yujie Ma 1Yilun Ren 2Dongyue Sun 2Biao Wang 2Hao Wu 2Haifeng Bian 2Jiangdong Cao 3Xueyu Cao 3Feng Ding 3Jiahao Lu 3Xiangkang Meng2
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作者信息

  • 1. School of Intelligent Manufacturing and Information,Jiangsu Shipping College,Nantong 226010,China;National Laboratory of Solid State Microstructures,Collaborative Innovation Center of Advanced Microstructures,College of Engineering and Applied Sciences,Nanjing University,Nanjing 210093,China
  • 2. National Laboratory of Solid State Microstructures,Collaborative Innovation Center of Advanced Microstructures,College of Engineering and Applied Sciences,Nanjing University,Nanjing 210093,China
  • 3. School of Intelligent Manufacturing and Information,Jiangsu Shipping College,Nantong 226010,China
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Abstract

Lithium-sulfur(Li-S)batteries have the advantages of high-energy-density,low cost,and environmental friendliness,but the sluggish sulfur redox reactions and the severe shuttle effect of lithium polysulfide(LiPSs)affect their performance.Herein,we developed a highly efficient electrocatalyst(CNT/HEA-NC)consisting of high-entropy alloy(HEA)nanoparticles decorated with nitrogen-doped carbon(NC)and car-bon nanotubes(CNTs)conductive networks.In the elaborate nanostructured protocol,the HEA nanopar-ticles with high catalytic activity accelerate the bidirectional conversion of LiPSs,the NC with strong sul-fophilic activity effectively adsorb LiPSs to suppress the shuttle effect,and the CNT conductive network provides a fast electrons/ions transport pathway.Benefiting from the hierarchical confinement,Li-S bat-teries with CNT/HEA-NC modified separators deliver a discharge specific capacity of 692.0 mA h g-1 after 300 cycles at 1 C with a capacity decay rate of only 0.03％per cycle.Even at a current density of 5 C,the cell exhibits a superior capacity of 521.1 mAh g-1.This work provides a general strategy for integrating multifunctional electrocatalysts for high-performance Li-S batteries.

Key words

High-entropy alloy/Nitrogen-doped carbon/Shuttle effect/Electrocatalyst/Li-S batteries

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基金项目

Jiangsu Carbon Peak Carbon Neutralization Science and Technology Innovation Special Fund(BE2022605)

Fundamental Research Funds for the Central Universities(14380163)

National Natural Science Foundation of China(22075288)

Natural Science Foundation of the Jiangsu Higher Education Institutions of China(21KJA460014)

Natural Science Foundation of the Jiangsu Higher Education Institutions of China(23KJB430012)

Natural Science Foundation of Jiangsu Province(BK20231227)

Nantong Basic Science Research Program(JC12022056)

出版年

2024
材料科学技术(英文版)
中国金属学会 中国材料研究学会 中国科学院金属研究所

材料科学技术(英文版)

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影响因子：0.657
ISSN：1005-0302
参考文献量46
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