文献类型：期刊文献

英文题名：Mechanochemical-Assisted Synthesis of High-Entropy Metal Nitride via a Soft Urea Strategy

作者：Jin, Tian[1,2,3];Sang, Xiahan[4];Unocic, Raymond R.[4];Kinch, Richard T.[5];Liu, Xiaofei[1,2];Hu, Jun[1,2];Liu, Honglai[1,2];Dai, Sheng[3,6]

机构：[1]East China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Sch Chem & Mol Engn, Shanghai 200237, Peoples R China;[3]Univ Tennessee, Dept Chem, Knoxville, TN 37996 USA;[4]Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN 37831 USA;[5]Univ Puerto Rico, Dept Chem, Rio Piedras Campus, San Juan, PR 00931 USA;[6]Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA

年份：2018

卷号：30

期号：23

外文期刊名：ADVANCED MATERIALS

收录：;EI(收录号：20181705108075);WOS:【SCI-EXPANDED(收录号:WOS:000434036000020)】；

基金：This research was supported by the Fluid Interface Reactions, Structures, and Transport, an Energy Frontier Research Center-US Department of Energy, Office of Science, Office of Basic Energy Sciences. Electron microscopy was conducted at the Center for Nanophase Materials Sciences, which is a DOE Office of Science User Facility. T.J. and X.L. were financially supported to study at UTK by the National Basic Research Program of China (21507030) and the 111 Project of Ministry of Education of China (No. B08021). H.J. and H.L. were involved in discussion on XRD structural characterizations. SD wanted to acknowledge the initial discussion of research on high-entropy materials with Dr. Brian C. Sales at Oak Ridge.

语种：英文

外文关键词：ball milling; high-entropy; mechanochemical; multimetal nitride; supercapacitors

摘要：Crystalline high-entropy ceramics (CHC), a new class of solids that contain five or more elemental species, have attracted increasing interest because of their unique structure and potential applications. Up to now, only a couple of CHCs (e.g., high-entropy metal oxides and diborides) have been successfully synthesized. Here, a new strategy for preparing high-entropy metal nitride (HEMN-1) is proposed via a soft urea method assisted by mechanochemical synthesis. The as-prepared HEMN-1 possesses five highly dispersed metal components, including V, Cr, Nb, Mo, Zr, and simultaneously exhibits an interesting cubic crystal structure of metal nitrides. By taking advantage of these unique features, HEMN-1 can function as a promising candidate for supercapacitor applications. A specific capacitance of 78 F g(-1) is achieved at a scan rate of 100 mV s(-1) in 1 M KOH. In addition, such a facile synthetic strategy can be further extended to the fabrication of other types of HEMNs, paving the way for the synthesis of HEMNs with attractive properties for task-specific applications.