Unparalleled mitigation of membrane degradation in fuel cells via a counter-intuitive approach: suppression of H 2 O 2 production at the hydrogen anode using a Pt skin –PtCo catalyst

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PtCo/C HT anode catalyst showed a large suppression of H 2 O 2 generation, by ≥50% in comparison with commercial Pt/CB at practical potentials for H 2 oxidation, resulting in greatly enhanced durability of the fuel cell by mitigating membrane degradation.