Pd/CeO₂ Interface with Abundant Oxygen Vacancies for Alkaline Hydrogen Evolution/Oxidation Reaction

Zheng, Tianlong1; Chen, Shiyuan2; Qin, Jiaqi3; Yang, Fei4; Shi, Jinhua1; Hu, Yongfeng5; Song, Yujiang3; Shi, Xiaobo6; Gu, M. Danny4; Wang, Miao2; He, Qinggang1

2024-08-01

10.1021/acsanm.4c03414

ACS APPLIED NANO MATERIALS   影响因子和分区

2574-0970

Hydrogen evolution reaction and hydrogen oxidation reaction (HER/HOR) are two key reactions in the electrolysis of water to produce green hydrogen and fuel cells, respectively. However, the slow kinetics of HER/HOR under alkaline conditions and lack of catalysts with good activity and durability limit their development and application. Here, Pd nanoparticles supported by CeO2/C with abundant oxygen vacancies were synthesized for alkaline HER/HOR. The results of physical characterizations and electrochemical measurements indicated that small-size Pd nanoparticles were in full contact with CeO2, and charge transfer occurred at the Pd-CeO2 interface. The rich Pd-CeO2 interface and the interaction between metal and metal oxide carriers greatly improved the electrocatalytic activity of HER and HOR under alkaline conditions. The optimal Pd/CeO2/C exhibited excellent HER/HOR activity with a higher HER exchange current density (1.963 mA cm(-2)) than commercial Pt/C. Furthermore, the HER and HOR mass activity of Pd/CeO2/C reached 33 times and 9.2 times that of Pd/C, respectively. Pd/CeO2/C exhibited enhanced electrocatalytic stability due to the anchoring of Pd via abundant oxygen vacancy defects in CeO2/C. This work provides a meaningful reference for the rational regulation of metal-support interfaces and the application of metal-oxide-support-based electrocatalysts in electrocatalytic reactions.

hydrogen oxidation reaction hydrogen evolutionreaction Pd/CeO2 metal-supportinteraction oxygen vacancies

SCI ; EI

英语

其他

National Natural Science Foundation of China[22178307] ; China Southern Power Grid[.0470002022030103HX00002-01]

Science & Technology - Other Topics ; Materials Science

Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary

WOS:001291769200001

AMER CHEMICAL SOC

Web of Science

1.Zhejiang Univ, Coll Chem & Biol Engn, Hangzhou 310027, Peoples R China
2.Zhejiang Univ, Dept Phys, Zhejiang Prov Key Lab Quantum Technol & Device, Hangzhou 310027, Peoples R China
3.Dalian Univ Technol, Sch Chem Engn, Dalian 116024, Peoples R China
4.Eastern Inst Technol, Eastern Inst Adv Study, Ningbo 315200, Peoples R China
5.Sinopec, Shanghai Res Inst Petrochem Technol, Shanghai 201208, Peoples R China
6.Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen 518055, Peoples R China

Zheng, Tianlong,Chen, Shiyuan,Qin, Jiaqi,et al. Pd/CeO₂ Interface with Abundant Oxygen Vacancies for Alkaline Hydrogen Evolution/Oxidation Reaction[J]. ACS APPLIED NANO MATERIALS,2024.

Zheng, Tianlong.,Chen, Shiyuan.,Qin, Jiaqi.,Yang, Fei.,Shi, Jinhua.,...&He, Qinggang.(2024).Pd/CeO₂ Interface with Abundant Oxygen Vacancies for Alkaline Hydrogen Evolution/Oxidation Reaction.ACS APPLIED NANO MATERIALS.

Zheng, Tianlong,et al."Pd/CeO₂ Interface with Abundant Oxygen Vacancies for Alkaline Hydrogen Evolution/Oxidation Reaction".ACS APPLIED NANO MATERIALS (2024).