文献类型：期刊文献

英文题名：Using sp(2) N atom anchoring effect to prepare ultrafine vanadium nitride particles on porous nitrogen-doped carbon as cathode for lithium-sulfur battery

作者：Sun, Chaoyang Ji, Shan Ma, Xianguo Wang, Hui Wang, Xuyun Linkov, Vladimir Wang, Rongfang

第一作者：Sun, Chaoyang

通信作者：Wang, H[1];Wang, RF[1];Ji, S[2]

机构：[1]Qingdao Univ Sci & Technol, Coll Chem Engn, State Key Lab Base Ecochem Engn, Qingdao 266042, Peoples R China;[2]Jiaxing Univ, Coll Biol Chem Sci & Engn, Jiaxing 314001, Peoples R China;[3]Guizhou Inst Technol, Sch Chem Engn, Guiyang 550003, Peoples R China;[4]Univ Western Cape, South African Inst Adv Mat Chem, ZA-7535 Cape Town, South Africa

第一机构：Qingdao Univ Sci & Technol, Coll Chem Engn, State Key Lab Base Ecochem Engn, Qingdao 266042, Peoples R China

通信机构：corresponding author), Qingdao Univ Sci & Technol, Coll Chem Engn, State Key Lab Base Ecochem Engn, Qingdao 266042, Peoples R China;corresponding author), Jiaxing Univ, Coll Biol Chem Sci & Engn, Jiaxing 314001, Peoples R China.

年份：2022

卷号：623

起止页码：306-317

外文期刊名：JOURNAL OF COLLOID AND INTERFACE SCIENCE

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000829956000008)】；

基金：The authors would like to thank the Key Technology Research and Development Program of Shandong Province of China (No. 2019GGX103029) and the Natural Science Foundation of Shandong Province of China (ZR2020MB024) for financially supporting this work.

语种：英文

外文关键词：Sp(2) N; Cathode; Vanadium nitride; Lithium-sulfur battery; 3D carbon

摘要：Porous carbon-supported transition metals and their compounds have attracted much attention as sulfur host materials for cathodes of lithium-sulfur batteries, due to their high chemisorption capacity and ability to catalyze the conversion of polysulfides. However, actual activity of these materials is not very high because of low specific surface areas of transition metal compounds synthesized at high temperatures. In this study, ultra-fine vanadium nitride particles with an average particle size of ca. 4 nm (VN/M/NC) are successfully grown on the surface of nitrogen-doped three-dimensional carbon using sp(2) nitrogen atoms, resulting from melamine pyrolysis in the presence of ammonium metavanadate, as anchor points to lock vanadium atoms in the VN/M/NC material. When used as a cathode for lithium-sulfur battery, VN/M/NC demonstrates initial discharge specific capacity of 1080 mAh g(-1) at 0.2 C, and retains a discharge capacity of 475 mAh g(-1) at a high rate of 2 C. With capacity attenuation of only 0.037% per cycle after 500 cycles at 1 C, the newly obtained VN/M/NC can be a promising cathode material for lithium-sulfur batteries. (C) 2022 Published by Elsevier Inc.