期刊
NANO LETTERS
卷 21, 期 13, 页码 5774-5781出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.nanolett.1c01581
关键词
high valence M-incorporated; noble metal; general method; water electrolyte
类别
资金
- National Natural Science Foundation of China [22001143, 51572136, 51772162, 52072197]
- Youth Innovation and Technology Foundation of Shandong Higher Education Institutions, China [2019KJC004]
- Outstanding Youth Foundation of Shandong Province, China [ZR2019JQ14]
- Taishan Scholar Young Talent Program
- Taishan Scholar Project of Shandong Province [tsqn201909123]
- Major Scientific, and Technological Innovation Project [2019JZZY020405]
The research team successfully synthesized PdCu nanoparticles incorporated with different high-valence noble metals, demonstrating excellent performance in water electrolysis and providing new catalytic materials for overall water splitting.
The high-valence metal catalysts show extraordinary talent in various electrochemical reactions. However, there is no facile method to synthesize high-valence noble metal-based materials. Herein, we synthesized the different high valence noble metal M-incorporated PdCu nanoparticles (M = Ir, Ru, Rh) by the assistant of Fe3+ and exhibit excellent performance for water electrolysis. In 0.1 M KOH, the OER and HER mass activities of Ir-16-PdCu/C were 50.5 and 16.5 times as much as PdCu/C, and achieved a current density of 10 mA cm(-2) at 1.63 V when worked for overall water splitting. DFT calculation revealed that the incorporating of high valence Ir could optimize the binding energy of the intermediate products, and promote the evolution of oxygen and hydrogen. Ex situ XPS shows that the huge amount of oxidized Ir (V) formed in OER could promote the formation of O.O bonds.
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