A highly-active, stable and low-cost platinum-free anode catalyst based on RuNi for hydroxide exchange membrane fuel cells.

ABSTRACT: The development of cost-effective hydroxide exchange membrane fuel cells is limited by the lack of high-performance and low-cost anode hydrogen oxidation reaction catalysts. Here we report a Pt-free catalyst Ru₇Ni₃/C, which exhibits excellent hydrogen oxidation reaction activity in both rotating disk electrode and membrane electrode assembly measurements. The hydrogen oxidation reaction mass activity and specific activity of Ru₇Ni₃/C, as measured in rotating disk experiments, is about 21 and 25 times that of Pt/C, and 3 and 5 times that of PtRu/C, respectively. The hydroxide exchange membrane fuel cell with Ru₇Ni₃/C anode can deliver a high peak power density of 2.03 W cm^-2 in H₂/O₂ and 1.23 

SUBMITTER: Xue Y 

PROVIDER: S-EPMC7648055 | biostudies-literature | 2020 Nov

REPOSITORIES: biostudies-literature