Mechanochemical-Assisted Synthesis of High-Entropy Metal Nitride via a Soft Urea Strategy
- East China Univ. of Science and Technology, Shanghai (China). State Key Lab. of Chemical Engineering. School of Chemistry and Molecular Engineering; Univ. of Tennessee, Knoxville, TN (United States). Dept. of Chemistry
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Sciences
- Univ. of Puerto Rico, San Juan, PR (United States). Dept. of Chemistry
- East China Univ. of Science and Technology, Shanghai (China). State Key Lab. of Chemical Engineering. School of Chemistry and Molecular Engineering
- Univ. of Tennessee, Knoxville, TN (United States). Dept. of Chemistry; Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Chemical Science Division
Abstract 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.
- Research Organization:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States); East China Univ. of Science and Technology, Shanghai (China); Energy Frontier Research Centers (EFRC) (United States). Fluid Interface Reactions, Structures and Transport Center (FIRST)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES); National Basic Research Program of China; 111 Project of Ministry of Education of China
- Grant/Contract Number:
- AC05-00OR22725; 21507030; B08021
- OSTI ID:
- 1462855
- Alternate ID(s):
- OSTI ID: 1434377
- Journal Information:
- Advanced Materials, Vol. 30, Issue 23; ISSN 0935-9648
- Publisher:
- WileyCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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