Electrochemical properties of ultra-fine palladium particles for adsorption and absorption of hydrogen in an aqueous HClO4 solution

✍ Scribed by Naokazu Tateishi; Kiyochika Yahikozawa; Katsunori Nishimura; Masato Suzuki; Yukinori Iwanaga; Mitsuko Watanabe; Eiji Enami; Yoshiharu Matsuda; Yoshio Takasu

• Publisher: Elsevier Science
• Year: 1991
• Tongue: English
• Weight: 345 KB
• Volume: 36
• Category: Article
• ISSN: 0013-4686
• DOI: 10.1016/0013-4686(91)85114-m

✦ Synopsis

Ultra-five palladium particles were prepared by vacuum evaporation onto a flat plane of a glassy carbon rod Their diameters were estimated to be 2-10 nm by means of a high resolution scanning electron microscopy (SEM) Properties of Pd/GC electrodes in hydrogen adsorption and absorption were charactensed by cyclic voltammetry Adsorption strength of hydrogen species on the Pd particles of Pd/GC did not depend on the particle size, whereas amounts of the adsorbed hydrogen species and the absorbed ones into the Pd particles were dependent The X-ray photoelectron spectroscopy (XPS) clearly revealed that the energy level of Pd 3d electron band increased with a decrease in the Pd particle size