Microwave quasi-solid-constructed Ni<sub>2</sub>P–Ni<sub>12</sub>P<sub>5</sub>-supported Os with unique metal–support interaction for anion-exchange membrane seawater electrolysis
Highly efficient and corrosion-resistant electrocatalysts for the seawater hydrogen evolution reaction (HER) are crucial for large-scale hydrogen production. Herein, Ni<sub>2</sub>P-Ni<sub>12</sub>P<sub>5</sub>-supported Os (Os/Ni<sub>2</sub>P-Ni<sub>12</sub>P<sub>5</sub>) was synthesized within 30 s <i>via</i> an ultrafast and simple microwave quasi-solid approach. This fabricated interface improves the electron transfer efficiency, while metal-support interaction (MSI) between Os and Ni<sub>2</sub>P-Ni<sub>12</sub>P<sub>5</sub> further optimizes the electronic structure, and then significantly expedites the HER process. The electrocatalyst presents excellent performance in alkaline seawater with a low overpotential of 17 mV to reach the current density of 10 mA cm<sup>-2</sup>. In simulated industrial conditions (1 M KOH + seawater) using an anion exchange membrane water electrolyzer (AEMWE), the constructed Os/Ni<sub>2</sub>P-Ni<sub>12</sub>P<sub>5</sub> ‖ RuO<sub>2</sub> cell system required a small voltage of 2.06 V to achieve 1 A cm<sup>-2</sup>. The cost calculation for the produced hydrogen reveals a low price of USD $0.92 per gallon of gasoline equivalent (GGE), which demonstrates its economic advantages for industrialized application. Moreover, various stability measurements revealed that the electrolytic cell system exhibits excellent durability without significant current fluctuations. This corrosion-resistant electrocatalyst with enhanced price activity and mass activity for sustainable seawater electrolysis will pave the way in the design of efficient electrocatalysts with diverse strategies from a novel vision.
Authors
- Weiping Xiao (ORCID: https://orcid.org/0000-0002-3337-1807)
- Zexing Wu (ORCID: https://orcid.org/0000-0002-9059-8688)
- Qing Liu (ORCID: https://orcid.org/0000-0002-8473-6511)
- Lei Wang (ORCID: https://orcid.org/0000-0001-7275-4846)
- Hongdong Li (ORCID: https://orcid.org/0000-0002-5241-9722)
- Qiang Cao (ORCID: https://orcid.org/0000-0001-9890-323X)
- Tianyi Ma (ORCID: https://orcid.org/0000-0002-1042-8700)
- Jun Xing (ORCID: https://orcid.org/0000-0003-4499-4062)
- Xiaowei Fu (ORCID: https://orcid.org/0000-0002-0495-0279)
- Guangying Fu
- Jinsong Wang (ORCID: https://orcid.org/0000-0002-2897-665X)
- Yingxia Zong (ORCID: https://orcid.org/0000-0002-2059-9669)
Institutions
- Kunming University of Science and Technology (CN)
- Qingdao University of Science and Technology (CN)
- Nanjing Forestry University (CN)
- Chinese Academy of Sciences (CN)
- Qingdao Institute of Bioenergy and Bioprocess Technology (CN)
- RMIT University (AU)
Publication Details
- Journal
- Chemical Science
- Published
- 2025-01-01
- DOI
- https://doi.org/10.1039/d5sc02930a
- Citations
- 9
- Primary Topic
- Electrocatalysts for Energy Conversion
- Type
- article
- Field-Weighted Citation Impact
- 3.27
Funders
- National Natural Science Foundation of China
- Natural Science Foundation of Shandong Province
- Taishan Scholar Foundation of Shandong Province
- National Outstanding Youth Science Fund Project of National Natural Science Foundation of China
- Natural Science Fund for Distinguished Young Scholars of Shandong Province