Transition Metal Carbides and Nitrides as Electrode Materials for Low Temperature Fuel Cells

Energies

Dong Jin Ham¹ 

[1] Eco-friendly Catalysis and Energy Laboratory (NRL), Department of Chemical Engineering, School of Environmental Science and Engineering, Pohang University of Science and Technology, San 31, Hyoja-dong, Pohang 790-784, Republic of Korea; E-Mail

关键词: transition metal carbide;    transition metal nitride;    low temperature fuel cells;   

DOI  :  10.3390/en20400873

来源: mdpi

【 摘 要 】

Transition metal carbides (TMCs) and transition metal nitrides (TMNs) have attracted attention as promising electrocatalysts that could replace noble metals of high price and limited supply. Relative to parent metals, TMC and TMN behave like noble metals for electrochemical reactions such as oxidation of hydrogen, CO and alcohols, and reduction of oxygen. When TMC and TMN are combined with other metals, the electrocatalytic synergy is often observed in electrochemical reactions. Thus, combinations with a minute amount of Pt or even non-Pt metals give performance comparable to heavily loaded Pt-based electrocatalysts for low temperature fuel cells. It appears that TMC based electrocatalysts are more active as anode catalysts for oxidation of fuels, whereas TMN based catalysts are more active for cathode catalysts for oxygen reduction and more stable.

【 授权许可】

CC BY   
© 2009 by the authors; licensee MDPI, Basel, Switzerland.