期刊
MICRO & NANO LETTERS
卷 13, 期 9, 页码 1260-1264出版社
INST ENGINEERING TECHNOLOGY-IET
DOI: 10.1049/mnl.2018.5100
关键词
nanoparticles; catalysts; nanofabrication; electrolytes; reduction (chemical); catalysis; current density; durability; bonds (chemical); nanocomposites; graphite; powder technology; electrolysis; protective coatings; alkaline electrolyte; one-step solid state method; melamine; filmy graphite carbon layer; methanol tolerant performance; oxygen reduction reaction catalyst; powder; nanocomposite; long time durability; graphite carbon coated nanoparticles; electrocatalytic properties; surface chemical bonding; current density; voltage 0; 2 V; TiN-C
资金
- National Natural Science Foundation of China [61574020, 51572032, 61674019, 51472221, 51472033, 51472196]
- Program for Science & Technology Innovation Talents in Universities of Henan Province [14HASTIT018]
The novel composite structure of TiN nanoparticles enclosed by graphite carbon coating (TiN/C) has been successfully prepared through a facile one-step solid state method under N-2 atmosphere using the TiO2 powder and melamine as raw materials. TiN nanoparticles with size ranging from 12 to 15 nm are covered by filmy graphite carbon layer, and their electrocatalytic properties towards oxygen reduction are further investigated. Benefiting from the surface chemical bonding of oxide and oxynitride components, TiN/C nanocomposite exhibit a considerable catalytic activity. The current density of TiN/C nanocomposite (4.65 mA cm(-2) at 0.2 V) is comparable to that of commercial Pt/C catalyst, in spite of a little more negative gap in onset potential. Moreover, the TiN/C nanocomposite has excellent long time durability and methanol tolerant performance with the protection of graphite carbon coating.
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