Two-dimensional mesoporous B, N co-doped carbon nanosheets decorated with TiN nanostructures for enhanced performance lithium-sulfur batteries

被引：3
作者：
Cao, Yunbo [2 ,3 ]
Wang, Chengchong [2 ,3 ]
Wang, Xiaohan [1 ]
Zhang, Haijun [1 ]
Jiang, Xingmao [2 ,3 ]
Xiong, Chunyan [2 ,3 ]
Liang, Feng [1 ]
机构：
[1] Wuhan Univ Sci & Technol, State Key Lab Refractories & Met, Wuhan 430081, Hubei, Peoples R China
[2] Wuhan Inst Technol, Sch Chem Engn & Pharm,Minist Educ, Hubei Key Lab Novel Reactor & Green Chem Technol, Hubei Prov Res Ctr Engn & Technol New Energy Mat, Wuhan 430205, Hubei, Peoples R China
[3] Wuhan Inst Technol, Sch Chem Engn & Pharm, Hubei Key Lab Novel Reactor & Green Chem Technol, Minist Educ,Key Lab Green Chem Proc, Wuhan 430205, Hubei, Peoples R China
来源：
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING | 2021年 / 127卷 / 12期
基金：
中国国家自然科学基金;
关键词：
B; N co-doped carbon; Titanium nitride; Mesoporous structure; Lithium-sulfur battery; OXYGEN REDUCTION REACTION; NITRIDE NANOSHEETS; TITANIUM NITRIDE; ELECTRODE MATERIALS; METAL SULFIDES; POROUS CARBON; BORON; GRAPHENE; NITROGEN; POLYSULFIDES;
D O I：
10.1007/s00339-021-05068-6
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Two-dimensional (2D) mesoporous B, N co-doped carbon/TiN (BNC-TN) composites were synthesized for the first time via hydrogel method followed by an ionothermal route using polyvinyl alcohol, guanidine carbonate, and boric acid as the carbon, nitrogen, and boron sources, NH2-MIL-125 (Ti) as the TiN precursor. The as-synthesized BNC-TN not only possesses mesoporous 2D sheet-like structure, adjustable B, N co-doping and TiN content, but also effectively alleviates the lithium polysulfides (LiPSs) shuttle effect because of the porous framework, as well as polar TiN and doping heteroatoms as chemical anchors of LiPSs. S@BNC-TN cathode exhibited a high initial overall discharge capacity of 1130.9 mA h g(-1) and a discharge capacity of 951.5 mA h g(-1) after 50 cycles. This material offers a promising pathway to alleviate challenges facing lithium-sulfur batteries.
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页数：9
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