4.7 Article

Controllable synthesis of a mesoporous NiO/Ni nanorod as an excellent catalyst for urea electro-oxidation

Journal

INORGANIC CHEMISTRY FRONTIERS
Volume 7, Issue 10, Pages 2089-2096

Publisher

ROYAL SOC CHEMISTRY
DOI: 10.1039/d0qi00316f

Keywords

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Funding

  1. National Natural Science Foundation of China [NSFC - 21671170, 21673203, 21201010]
  2. Top-notch Academic Programs Project of Jiangsu Higher Education Institutions (TAPP)
  3. Program for New Century Excellent Talents of the University in China [NCET-13-0645]
  4. Six Talent Plan [2015-XCL-030]
  5. Qinglan Project of Jiangsu
  6. Program for Colleges Natural Science Research in Jiangsu Province [18KJB150036]
  7. Science and Technology Innovation Foster Foundation of Yangzhou University [2016CXJ010]

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Mesoporous rod-like structured composites of NiO/Ni have been successfully prepared via a low temperature heat treatment of the precursor NiC2O4 center dot 2H(2)O in N-2. The composites of NiO/Ni have the advantage of optimized electroactive sites, which can promote efficient mass transport through the mesoporous structure. Moreover, the evenly dispersed nanoparticles of nickel improve the electrical conductivity of the composites. Besides, the collaborative effects of both NiO and Ni further improve the kinetics of the urea electro-oxidation process. As expected, the composites exhibit a low overpotential of 120 mV at 10 mA cm(-2) (vs. RHE), good kinetics and outstanding catalytic stability for urea oxidation. All the results show that the mesoporous NiO/Ni obtained from nickel oxalate can provide valuable research data for improving the performance of direct urea fuel cells.

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