Energy Environ. Sci.: Metastable-phase platinum oxide for clarifying the Pt–O active site for the hydrogen evolution reaction

Title：

Metastable-phase platinum oxide for clarifying the Pt–O active site for the hydrogen evolution reaction

Authors：

Haiwei Yang^1#, Yujin Ji^1#, Qi Shao²*, Wenxiang Zhu¹, Miaomiao Fang², Mengjie Ma¹, Fan Liao¹, Hui Huang¹, Yi Zhang¹, Junjun Yang¹, Zhenglong Fan¹, Youyong Li¹, Yang Liu¹*, Mingwang Shao¹* and Zhenhui Kang^1,3*

Institutions：

¹Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, 199 Ren′ai Road, Suzhou, 215123, Jiangsu, China.

²College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Jiangsu, 215123, China.

³Macao Institute of Materials Science and Engineering (MIMSE), MUST-SUDA Joint Research Center for Advanced Functional Materials, Macau University of Science and Technology, Taipa, 999078, Macao, China.

Abstract：

Platinum (Pt) catalyst is the core of current industrial catalysts and the holy grail for the hydrogen evolution reaction (HER). Previous studies have revealed that the HER activity of oxidized Pt is better than that of metal Pt⁰. Yet the relationship between the Pt-O structure and the catalytic activity has not been well explained to date. Herein, we report a new metastable platinum oxide, which achieved a low overpotential of 12 mV at a current density of 10 mA per square centimetre in acidic HER. DFT calculations showed that the [Pt-O] active site could be easily attacked by protons to form the Pt-H intermediate state during the HER and the adsorbed H could easily combine with any H atoms on adjacent O to form H₂.

IF：

39.714

Link：

https://pubs.rsc.org/en/content/articlelanding/2023/EE/D2EE03351H