680593-39-9Relevant academic research and scientific papers
Electroreduction of Oxygen at a Pt/C-Modified Electrode with a Cobaltporphyrin Complex
Shentu, Baoqing,Oyaizu, Kenichi,Nishide, Hiroyuki
, p. 401 - 405 (2004)
Cobalt complexes that reversibly bind and release O2 functioned as O2 carriers, or O2-enriching media, at the surface of a cathode to enhance the current for the reduction of O2. The effect of the cobalt complex to accumulate O2 was evidenced by the higher open-circuit potential, which reflected the equilibrated concentration of O 2 at the electrode surface. The combination of the cobalt complex and the conventional Pt/C catalyst resulted in a significant increase in the steady-state current for the four-electron reduction of O2, particularly at small overpotentials where typical fuel cells operate, based on the facilitated transport of O2 from the atmosphere to the catalyst at the electrode surface.
