Ultrafast Strategy to Fabricate Sulfur Cathodes for High-Performance Lithium-Sulfur Batteries

被引:8
作者
Liu, Kun [1 ,2 ]
Yuan, Huimin [1 ,2 ]
Wang, Xinyang [1 ,2 ]
Ye, Peiyuan [1 ,2 ]
Lu, Binda [1 ,2 ]
Zhang, Junjie [1 ,2 ]
Lu, Wang [1 ,2 ]
Jiang, Feng [1 ,2 ,3 ]
Gu, Shuai [1 ,2 ]
Chen, Jingjing [1 ,2 ]
Yan, Chunliu [1 ,2 ]
Li, Yingzhi [1 ,2 ]
Xu, Zhenghe [1 ,2 ,3 ]
Lu, Zhouguang [1 ]
机构
[1] Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen Key Lab Interfacial Sci & Engn Mat, Shenzhen 518055, Peoples R China
[2] Southern Univ Sci & Technol, Key Univ Lab Highly Efficient Utilizat Solar Energ, Shenzhen 518055, Peoples R China
[3] Southern Univ Sci & Technol, Adv Mat Innovat Ctr, Jiaxing Res Inst, Jiaxing 314031, Peoples R China
基金
中国国家自然科学基金;
关键词
lithium-sulfur batteries; microwave treatment; bitumen; cathode; Ni2S; CARBON;
D O I
10.1021/acsami.3c04972
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
Based on the different dielectric properties of materialsand theselective heating property of microwaves, the ultrafast (30 s) preparationof S-NiS2@SP@Bitu as a cathode material for lithium-sulfurbatteries was achieved using bitumen, sulfur, Super P, and nickelnaphthenate as raw materials for the first time, under microwave treatment.NiS2@SP@Bitu forms Li-N, Li-O, Li-S,and Ni-S bonds with polysulfide, which contributes to promotingthe adsorption of polysulfide, reducing the precipitation and decompositionenergy barrier of Li2S, and accelerating the catalyticconversion of polysulfide, as result of inhibiting the "shuttleeffect" and improving the electrochemical performance. S-NiS2@SP@Bitu as the sulfur cathode material demonstrates outstandingrate performance (518.6 mAh g(-1) at 4C), and stablecycling performance. The lithium-sulfur battery with a sulfurloading of 4.8 mg cm(-2) shows an areal capacity of4.6 mAh cm(-2). Based on the advantages of microwaveselective and rapid heating, this method creatively realized thatthe sulfur carrier material was prepared and sulfur was fixed in itat the same time. Therefore, this method would have implications forthe preparation of sulfur cathode materials.
引用
收藏
页码:31478 / 31490
页数:13
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