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Title: Mechanochemical-Assisted Synthesis of High-Entropy Metal Nitride via a Soft Urea Strategy

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. In this paper, 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. Finally, 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.

Authors:
 [1];  [2]; ORCiD logo [2];  [3];  [4];  [4];  [4]; ORCiD logo [5]
  1. 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
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Sciences
  3. Univ. of Puerto Rico, San Juan, PR (United States). Dept. of Chemistry
  4. East China Univ. of Science and Technology, Shanghai (China). State Key Lab. of Chemical Engineering. School of Chemistry and Molecular Engineering
  5. Univ. of Tennessee, Knoxville, TN (United States). Dept. of Chemistry; Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Chemical Science Division
Publication Date:
Research Org.:
Oak Ridge National Lab. (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 Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); National Basic Research Program of China; 111 Project of Ministry of Education of China
OSTI Identifier:
1462855
Alternate Identifier(s):
OSTI ID: 1434377
Grant/Contract Number:  
AC05-00OR22725; 21507030; B08021
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Advanced Materials
Additional Journal Information:
Journal Volume: 30; Journal Issue: 23; Journal ID: ISSN 0935-9648
Publisher:
Wiley
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ball milling; high-entropy; mechanochemical; multimetal nitride; supercapacitors

Citation Formats

Jin, Tian, Sang, Xiahan, Unocic, Raymond R., Kinch, Richard T., Liu, Xiaofei, Hu, Jun, Liu, Honglai, and Dai, Sheng. Mechanochemical-Assisted Synthesis of High-Entropy Metal Nitride via a Soft Urea Strategy. United States: N. p., 2018. Web. doi:10.1002/adma.201707512.
Jin, Tian, Sang, Xiahan, Unocic, Raymond R., Kinch, Richard T., Liu, Xiaofei, Hu, Jun, Liu, Honglai, & Dai, Sheng. Mechanochemical-Assisted Synthesis of High-Entropy Metal Nitride via a Soft Urea Strategy. United States. doi:10.1002/adma.201707512.
Jin, Tian, Sang, Xiahan, Unocic, Raymond R., Kinch, Richard T., Liu, Xiaofei, Hu, Jun, Liu, Honglai, and Dai, Sheng. Tue . "Mechanochemical-Assisted Synthesis of High-Entropy Metal Nitride via a Soft Urea Strategy". United States. doi:10.1002/adma.201707512. https://www.osti.gov/servlets/purl/1462855.
@article{osti_1462855,
title = {Mechanochemical-Assisted Synthesis of High-Entropy Metal Nitride via a Soft Urea Strategy},
author = {Jin, Tian and Sang, Xiahan and Unocic, Raymond R. and Kinch, Richard T. and Liu, Xiaofei and Hu, Jun and Liu, Honglai and Dai, Sheng},
abstractNote = {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. In this paper, 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. Finally, 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.},
doi = {10.1002/adma.201707512},
journal = {Advanced Materials},
issn = {0935-9648},
number = 23,
volume = 30,
place = {United States},
year = {2018},
month = {4}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record

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Cited by: 9 works
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Figures / Tables:

Figure 1. Figure 1. : XRD pattern of HEMNs pyrolyzed at 600, 700, 800 (HEMN-1) and 900 oC, respectively.

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      Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.