journal article·2023-02

Low‐Coordinated Pd Site within Amorphous Palladium Selenide for Active, Selective, and Stable H2O2 Electrosynthesis

Zhiyong Yu, Shengyao Lv, Qing Yao, Nan Fang, Yong Xu, Qi Shao, Chih‐Wen Pao, Jyh‐Fu Lee, Guoliang Li, Li‐Ming Yang, Xiaoqing Huang

Advanced Materials· Volume 35· Issue 6
Publisher page

Abstract

Abstract The development of high‐performance catalysts with high activity, selectivity, and stability are essential for the practical applications of H2O2 electrosynthesis technology, but it is still formidably challenging. It is reported that the low‐coordinated structure of Pd sites in amorphous PdSe2 nanoparticles (a‐PdSe2 NPs) can significantly boost the electrocatalytic synthesis of H2O2. Detailed investigations and theoretical calculations reveal that the disordered arrangement of Pd atoms in a‐PdSe2 NPs can promote the activity, while the Pd sites with low‐coordinated environment can optimize the adsorption toward oxygenated intermediate and suppress the cleavage of O–O bond, leading to a significant enhancement in both the H2O2 selectivity and productivity. Impressively, a‐PdSe2 NPs/C exhibits high H2O2 selectivity over 90% in different pH electrolytes. H2O2 productivities with ≈3245.7, 1725.5, and 2242.1 mmol gPd−1 h−1 in 0.1 m KOH, 0.1 m HClO4, and 0.1 m Na2SO4 can be achieved, respectively, in an H‐cell electrolyzer, being a pH‐universal catalyst for H2O2 electrochemical synthesis. Furthermore, the produced H2O2 can reach 1081.8 ppm in a three‐phase flow cell reactor after 2 h enrichment in 0.1 m Na2SO4, showing the great potential of a‐PdSe2 NPs/C for practical H2O2 electrosynthesis.
Source: crossref · Quality: baseline

Research context

OpenAlex topics: Electrocatalysts for Energy Conversion · Advanced battery technologies research · Advanced Photocatalysis Techniques

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

State Key Laboratory of Physical Chemistry of Solid Surfaces College of Chemistry and Chemical Engineering Xiamen University Xiamen 361005 China

College of Chemistry Chemical Engineering and Materials Science Soochow University Suzhou 215123 China

Key Laboratory of Material Chemistry for Energy Conversion and Storage Ministry of Education Hubei Key Laboratory of Bioinorganic Chemistry and Materia Medica Hubei Key Laboratory of Materials Chemistry and Service Failure Hubei Engineering Research Center for Biomaterials and Medical Protective Materials School of Chemistry and Chemical Engineering Huazhong University of Science and Technology Wuhan 430074 China

Key Laboratory of Theoretical Chemistry of Environment Ministry of Education Center for Computational Quantum Chemistry School of Chemistry South China Normal University Guangzhou 510006 China

Guangzhou Key Laboratory of Low‐Dimensional Materials and Energy Storage Devices Collaborative Innovation Center of Advanced Energy Materials School of Materials and Energy Guangdong University of Technology Guangzhou 510006 China

National Synchrotron Radiation Research Center 101 Hsin‐Ann Road Hsinchu 30076 Taiwan

Funding

Ministry of Science and Technology · National Natural Science Foundation of China · Priority Academic Program Development of Jiangsu Higher Education Institutions · Fundamental Research Funds for the Central Universities · Xiamen University

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