期刊
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
卷 5, 期 4, 页码 2897-2905出版社
AMER CHEMICAL SOC
DOI: 10.1021/acssuschemeng.6b01764
关键词
Oxygen reduction reaction; Fuel cell; Vitamin B9; Electrocatalyst; In-situ X-ray adsorption spectroscopy
This study presents the performance of a carbon-black-supported pyrolyzed vitamin B9 (folic acid)-treated cathode catalyst (py-Fe-FA/C) in the oxygen reduction reaction (ORR) and proton exchange membrane fuel cell (PEMFC). Electrochemical ORR measurements revealed that using py-Fe-FA/C resulted in excellent ORR activity through the direct four-electron reduction pathway. The H-2-O-2 PEMFC with py-Fe-FA/C in the cathodic side produces a maximum power density of 330 mW cm-(2) with the 80 degrees C operation temperature and the 1 atm back pressure. X-ray photoelectron spectroscopy and in situ X-ray adsorption spectroscopy proved that the enhanced ORR activity was caused by the network structure of polyaromatic hydrocarbons, quaternary-type (graphitic) nitrogen, and the coordination structure of the py-Fe-FA/C, as confirmed by the ORR mechanism study using detailed XPS and in situ X-ray adsorption spectroscopy. Particularly, in situ X-ray adsorption spectroscopy elucidated the ORR mechanism of the py-Fe-FA/C.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据