An integral composite electrode with low Ir loading for efficient acidic oxygen evolution
The development of low-Ir-loading oxygen evolution reaction catalysts with high performance and stability is a major challenge for advancing proton exchange membrane water electrolysis (PEMWE). In this study, we report an integral composite electrode by depositing TiO<sub>2</sub> nanowires on titanium plate <i>via</i> an <i>in situ</i> growth method and subsequently loading Ir nanoparticles onto these nanowires (Ir-TiO<sub>2</sub>/TP). This approach not only reduces the usage of Ir but also significantly enhances the catalytic performance, with a low overpotential of 199 mV at 10 mA cm<sup>-2</sup>, while maintaining negligible activity decay over 440 hours at 10 mA cm<sup>-2</sup> in 0.5 M H<sub>2</sub>SO<sub>4</sub>.
Authors
- Xuli Chen (ORCID: https://orcid.org/0000-0002-0508-1677)
- Kaihang Yue (ORCID: https://orcid.org/0000-0002-0398-9286)
- Ya Yan (ORCID: https://orcid.org/0000-0002-9269-4235)
- Yingjie Wan
- Peng Zhao (ORCID: https://orcid.org/0000-0002-9046-6562)
- Yao Dai
Institutions
- Hunan University (CN)
- Chinese Academy of Sciences (CN)
- Shanghai Institute of Ceramics (CN)
Publication Details
- Journal
- Chemical Communications
- Published
- 2025-01-01
- DOI
- https://doi.org/10.1039/d5cc00884k
- Citations
- 3
- Primary Topic
- Electrocatalysts for Energy Conversion
- Type
- article
- Field-Weighted Citation Impact
- 1.09