The development of hydrogen energy is based on the green hydrogen production of electrolyzed water based on renewable energy. However, the high amount of precious metal catalyst is one of the main reasons for the high cost of proton exchange membrane electrolyzed water production. The Yang Hui team of the Shanghai Advanced Research Institute of the Chinese Academy of Sciences and the Dai Liming group of Case Western Reserve University have made new progress in the field of hydrogen energy research, developed a new method of spontaneous deposition of platinum defects driven by platinum clusters, and realized the hydrogen production cathode Pt The dosage is greatly reduced, and the research results are published in J. Am. Chem. Soc., 2020, 142, 12, 5594-5601, titled Carbon-Defect Driven Electroless Deposition of Pt Atomic Clusters for Highly Efficient Hydrogen Evolution. Cheng Qingqing, Ph.D. of Shanghai Institute of Advanced Research, and Yang Hui and Dai Liming as communication contacts. In this work, the researchers used a novel, carbon defect-driven spontaneous deposition method to construct a highly dispersed, ultra-small (<1nm) and stable Pt atomic-scale cluster (Pt-AC) hydroelectrically decomposed hydrogen (HER ) Electrocatalyst (Figure 1). Theoretical studies show that compared with perfect six-membered ring carbon sites, defective carbon sites have a lower surface work function and higher reduction capacity, so that spontaneous deposition of Pt ions is preferentially triggered at the defect sites. The stronger binding ability between carbon defects and Pt effectively limits the migration of spontaneously reduced Pt atoms, ensuring the formation and stability of ultra-small Pt-AC. Synchrotron radiation from Shanghai Light Source further verified the strong electronic interaction between Pt-AC and carbon defects, giving it a unique electronic structure that is different from traditional Pt nanoparticles. Pt-AC exhibits excellent HER electrocatalytic performance. Compared with traditional Pt / C catalysts, its mass specific activity, Pt atom utilization efficiency and stability have been greatly improved. The assembled proton exchange membrane water electrolysis device achieves an ampere-level hydrogen production current while reducing the amount of cathode Pt to about 1/10, and exhibits excellent stability. The progress of this project will have important scientific and practical significance for the development of the hydrogen energy field and the realization of the hydrogen energy economy. The research was supported by the National Key Research and Development Program, the National Natural Science Foundation of China, and the Strategic Pilot Technology Special Project of the Chinese Academy of Sciences.
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Figure: Ultra-small Pt-AC / DG preparation process, physical characterization, DFT calculation, electrochemical HER activity, and steady-state polarization curve and stability test of proton exchange membrane water electrolysis devices 
Shanghai Institute of Advanced Research and others made progress in the research of proton exchange membrane electrolysis of water to produce hydrogen