Selective and durable H2O2 electrosynthesis catalyst in acid by selenization induced straining and phasing

Zhiyong Yu, Hao Deng, Qing Yao, Liangqun Zhao, Fei Xue, Tianou He, Zhiwei Hu, Wei-Hsiang Huang, Chih-Wen Pao, Li-Ming Yang () and Xiaoqing Huang ()
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Zhiyong Yu: Xiamen University
Hao Deng: Ministry of Education
Qing Yao: Xiamen University
Liangqun Zhao: Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province (IKKEM)
Fei Xue: Xiamen University
Tianou He: Southwest University
Zhiwei Hu: Max Planck Institute for Chemical Physics of Solids
Wei-Hsiang Huang: National Synchrotron Radiation Research Center
Chih-Wen Pao: National Synchrotron Radiation Research Center
Li-Ming Yang: Ministry of Education
Xiaoqing Huang: Xiamen University

Nature Communications, 2024, vol. 15, issue 1, 1-12

Abstract: Abstract Developing efficient electrocatalysts for acidic electrosynthesis of hydrogen peroxide (H2O2) holds considerable significance, while the selectivity and stability of most materials are compromised under acidic conditions. Herein, we demonstrate that constructing amorphous platinum–selenium (Pt–Se) shells on crystalline Pt cores can manipulate the oxygen reduction reaction (ORR) pathway to efficiently catalyze the electrosynthesis of H2O2 in acids. The Se2‒Pt nanoparticles, with optimized shell thickness, exhibit over 95% selectivity for H2O2 production, while suppressing its decomposition. In flow cell reactor, Se2‒Pt nanoparticles maintain current density of 250 mA cm−2 for 400 h, yielding a H2O2 concentration of 113.2 g L−1 with productivity of 4160.3 mmol gcat−1 h−1 for effective organic dye degradation. The constructed amorphous Pt–Se shell leads to desirable O2 adsorption mode for increased selectivity and induces strain for optimized OOH* binding, accelerating the reaction kinetics. This selenization approach is generalizable to other noble metals for tuning 2e‒ ORR pathway.

Date: 2024
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DOI: 10.1038/s41467-024-53607-5

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