# Mixed platinum and zirconia powder as electrocatalyst for hydrogen evolution and oxidation reaction

Source: [Mixed platinum and zirconia powder as electrocatalyst for hydrogen evolution and oxidation reaction](<https://www.sota2.com/research/paper/68fa4a981e209131ce93fb7b>)

Collection index: [llms.txt](<https://www.sota2.com/research/llms.txt>)

Data updated: 2025-10-25T07:55:45.912Z

Authors: Simone Minelli, Manuel Iozzia, Claudio Piazzoni, Alberto Vertova, Cristina Lenardi, Alessandro Minguzzi

Published: 2025-06-09T16:18:05.000Z

## Abstract

The development of efficient and cost-effective bifunctional electrocatalysts for hydrogen-related technologies is crucial for the transition to sustainable energy. In this work, we present Pt@ZrO2 as a high-performance ceramic-based electrocatalyst for the hydrogen evolution reaction (HER) and hydrogen oxidation reaction (HOR), demonstrating superior activity and stability in alkaline conditions. Compared to Pd@ZrO2, previously investigated in our earlier work, Pt@ZrO2 exhibits significantly lower charge transfer resistance and enhanced HER/HOR kinetics, as confirmed by electrochemical impedance spectroscopy. The synergistic interaction between platinum and ZrO2 stabilizes Pt in a partially oxidized state, facilitating the Volmer step and improving charge transfer kinetics. Cyclic voltammetry further confirms the remarkable electrochemical stability of Pt@ZrO2 under stress conditions. Importantly, Pt@ZrO2 offers a cost-effective alternative to pure platinum by reducing noble metal loading while maintaining excellent catalytic performance. These findings establish Pt@ZrO2 as a better alternative to Pd@ZrO2 and a promising candidate for next-generation hydrogen energy applications.

## Recorded benchmark results

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## Original sources and implementation

[Original paper](<https://arxiv.org/abs/2506.14819>)

[PDF](<https://arxiv.org/pdf/2506.14819.pdf>)