S‐Doping of an Fe/N/C ORR Catalyst for Polymer Electrolyte Membrane Fuel Cells with High Power Density

Autor:	Xiaodong Yang, Lin Frank Song, Jianguo Liu, Shi-Gang Sun, Qiang Wang, Muhammad Rauf, Yu-Jiao Lai, Zhi-You Zhou, Chi Chen, Yanping Zheng, Wei Shi, Yu-Cheng Wang
Rok vydání:	2015
Předmět:	chemistry.chemical_classification Chemistry Inorganic chemistry Proton exchange membrane fuel cell General Medicine General Chemistry Carbon black Polymer Electrolyte Electrocatalyst Catalysis Membrane Power density
Zdroj:	Angewandte Chemie International Edition. 54:9907-9910
ISSN:	1521-3773 1433-7851
DOI:	10.1002/anie.201503159
Popis:	Fe/N/C is a promising non-Pt electrocatalyst for the oxygen reduction reaction (ORR), but its catalytic activity is considerably inferior to that of Pt in acidic medium, the environment of polymer electrolyte membrane fuel cells (PEMFCs). An improved Fe/N/C catalyst (denoted as Fe/N/C-SCN) derived from Fe(SCN)3, poly-m-phenylenediamine, and carbon black is presented. The advantage of using Fe(SCN)3 as iron source is that the obtained catalyst has a high level of S doping and high surface area, and thus exhibits excellent ORR activity (23 A g(-1) at 0.80 V) in 0.1 M H2SO4 solution. When the Fe/N/C-SCN was applied in a PEMFC as cathode catalyst, the maximal power density could exceed 1 W cm(-2).
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3bc08098dcea51bb1c13589000a44be6 https://doi.org/10.1002/anie.201503159 Zobrazit plný text záznamu Plný text