The strong metal-support interaction at Ni–O–Pt interface facilitates rapid electrocatalytic hydrogen production

• Published in: International journal of hydrogen energy 2024-10, Vol.88, p.1217-1225
• Main Authors: Huang, Lijun, Wang, Nana, Qi, Miao, Liu, Zhejun, Xu, Zeqiong, Zhang, Qiang, Shu, Zhiwei, Shan, Sunpeng, Bian, Yuhong, Chen, Jianrong, Jiao, Yang
• Format: Article
• Language: English
• Subjects: Ni-MOF; Ni–O–Pt interface; Pt nanoparticles; SMSI; Strong chelation effect; Water splitting
• ISSN: 0360-3199
• DOI: 10.1016/j.ijhydene.2024.09.194

Electrocatalytic water splitting technology, as an essential method for storing and converting renewable energy, has garnered significant attention. However, traditional electrolytic water splitting is hampered by issues such as noble metal catalysts are expensive and unstable, limiting its widespread application. To address this challenge, this study proposes an innovative method that utilizes nickel metal-organic framework (Ni-MOF) as a support to firmly anchor platinum (Pt) nanoparticles on its surface. This approach not only overcomes the high cost and instability associated with traditional noble metal catalysts but also leverages the strong chelation effect of ethylenediaminetetraacetic acid disodium salt (EDTA·2Na) and the strong metal-support interaction (SMSI) at the Ni–O–Pt interface, prompting catalysts to possess excellent stability and catalytic activity. The catalyst exhibits excellent performance in promoting the hydrogen evolution reaction (HER), oxygen evolution reaction (OER), and overall electrolysis of water, maintaining stability throughout the entire electrochemical process. At a current density of 10 mA cm−2, the overpotentials for HER and OER with Pt1·5/Ni-MOF are only 29 mV and 234 mV, respectively. When Pt1·5/Ni-MOF serves as both the cathode and anode for overall water splitting, only a low voltage of 1.557 V is needed. This study offers fresh insights into the development of stable, efficient, and low-budget dual-functional catalysts for water electrolysis, with the potential to drive the commercialization of water electrolysis technology and make significant contributions to the advancement of clean energy. This study proposes an innovative method that utilizes nickel metal-organic framework (Ni-MOF) as a support to firmly anchor platinum (Pt) nanoparticles on its surface. This approach not only overcomes the high cost and instability associated with traditional noble metal catalysts but also leverages the strong chelation effect of ethylenediaminetetraacetic acid disodium salt (EDTA·2Na) and the strong metal-support interaction (SMSI) at the Ni–O–Pt interface, further enhancing the activity and stability of the catalyst. The catalyst exhibits excellent and stable performance in hydrogen evolution reaction (HER), oxygen evolution reaction (OER), and overall water splitting, provides new insights into the development of efficient, stable, and low-cost dual-functional catalysts for water electrolysis. [Display omitted] •Ni-MOF an