Catalyst–Support Interaction in Polyaniline-Supported Ni3Fe Oxide to Boost Oxygen Evolution Activities for Rechargeable Zn-Air Batteries
Catalyst-support interaction plays a crucial role in improving the catalytic activity of oxygen evolution reaction (OER). Here we modulate the catalyst-support interaction in polyaniline-supported Ni<sub>3</sub>Fe oxide (Ni<sub>3</sub>Fe oxide/PANI) with a robust hetero-interface, which significantly improves oxygen evolution activities with an overpotential of 270 mV at 10 mA cm<sup>-2</sup> and specific activity of 2.08 mA cm<sub>ECSA</sub><sup>-2</sup> at overpotential of 300 mV, 3.84-fold that of Ni<sub>3</sub>Fe oxide. It is revealed that the catalyst-support interaction between Ni<sub>3</sub>Fe oxide and PANI support enhances the Ni-O covalency via the interfacial Ni-N bond, thus promoting the charge and mass transfer on Ni<sub>3</sub>Fe oxide. Considering the excellent activity and stability, rechargeable Zn-air batteries with optimum Ni<sub>3</sub>Fe oxide/PANI are assembled, delivering a low charge voltage of 1.95 V to cycle for 400 h at 10 mA cm<sup>-2</sup>. The regulation of the effect of catalyst-support interaction on catalytic activity provides new possibilities for the future design of highly efficient OER catalysts.
Authors
- Xiaohong Zou (ORCID: https://orcid.org/0009-0009-3816-5445)
- Jie Wu (ORCID: https://orcid.org/0000-0002-9865-180X)
- Mingcong Tang (ORCID: https://orcid.org/0000-0002-6991-2513)
- Yunxia Hu (ORCID: https://orcid.org/0000-0003-4710-6542)
- Xiaomin Xu (ORCID: https://orcid.org/0000-0002-0067-3331)
- Qian Lü (ORCID: https://orcid.org/0009-0001-4013-1529)
- Liang An (ORCID: https://orcid.org/0000-0002-8742-576X)
- Xiao Zhang (ORCID: https://orcid.org/0000-0002-4780-2161)
- Wenzhi Li (ORCID: https://orcid.org/0000-0001-8442-2232)
- Kouer Zhang (ORCID: https://orcid.org/0000-0002-7538-9597)
- Zongping Shao
Institutions
- Hong Kong Polytechnic University (HK)
- Chinese University of Hong Kong (HK)
- Nanjing University of Information Science and Technology (CN)
- Curtin University (AU)
- Department of Mines and Petroleum (AU)
Publication Details
- Journal
- Nano-Micro Letters
- Published
- 2024-09-20
- DOI
- https://doi.org/10.1007/s40820-024-01511-4
- Citations
- 39
- Primary Topic
- Electrocatalysts for Energy Conversion
- Type
- article
- Field-Weighted Citation Impact
- 3.99
Funders
- National Natural Science Foundation of China
- Government of Jiangsu Province
- Hong Kong Polytechnic University
- Natural Science Foundation of Jiangsu Province
- Nanjing University of Information Science and Technology