Improvement of hydrogen absorption rate of Pd by ion irradiation

Abe, Hiroshi; Azuma, Y.; Uedono, Akira; Chen, Z.Q.; Itoh, Hisayoshi

doi:10.1016/s0168-583x(03)00734-1

Cited by 25 publications

(12 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Karmakar et al [16] has shown the change in surface roughness of Pt film by Ar + ion bombardment at different ion fluence. Hydrogen absorption capability of Pd is increased after ion irradiation because of surface modification [17].…”

Section: Introductionmentioning

confidence: 99%

Pd-C powder and thin film catalysts for hydrogen production by hydrolysis of sodium borohydride

Patel

Patton

Zanchetta

et al. 2008

International Journal of Hydrogen Energy

179

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

Pd-C powder and thin film catalysts for hydrogen production by hydrolysis of sodium borohydride

Patel

Patton

Zanchetta

et al. 2008

International Journal of Hydrogen Energy

179

View full text Add to dashboard Cite

“…The good example for the latter case is production of vacancies by ion implantation before hydrogen insertion. It was experimentally proved that earlier introduced damages can effectively increase the hydrogen absorption rate [2]. For this reason studies of defects induced by ions are provided to develop our knowledge about material sensitivity to various irradiation conditions [3,4].…”

Section: Introductionmentioning

confidence: 99%

Positron Beam Studies of Radiation Damage Induced by Various Energy Heavy Ions of Xe²⁶⁺ in Iron

et al. 2019

View full text Add to dashboard Cite

Experimental studies of pure iron exposed to Xe 26+ irradiation are reported. Implantations were made with the fluence of 5 × 10 13 ions/cm 2 using 167 MeV ions moderated to 122.5, 77.0, and 44.5 MeV. Investigations were performed with variable energy positron beam (VEP). Doppler broadening spectroscopy (DB) was applied. The analysis of obtained results gives information about the presence of various kind of open-volume defects. Two layers with different values of positron diffusion lengths were found in implanted samples. The deeper one was more defected.

show abstract

“…Hence surface potential is a function of chemical composition and structure of the surface. In previous studies, the induction of vacancy in Pd was found to be effective for an increase in the initial hydrogen absorption reaction rate [8,9]. Regarding the hydrogen storage in metals, it was reported that the absorption concentration of hydrogen atoms and the hydrogen absorption reaction rate depend strongly on the surface state of metals [8].…”

Section: Introductionmentioning

confidence: 99%

Improvement of Hydrogen Absorption Characteristics of Pd Using Irradiation of Heavy Ions

Abe

Aone

Morimoto

et al. 2011

Trans. Mat. Res. Soc. Japan

View full text Add to dashboard Cite

The introduction of vacancies in palladium (Pd) was found to be effective for an increase in the initial hydrogen absorption reaction rate in a previous study. And it also has been reported that the initial hydrogen absorption reaction rate depends strongly on the surface conditions of metals. For the surface modification of materials, ion irradiation is known to be a quite useful method. Especially, heavy ions with keV ranges can create severe damage and high densities of vacancy near the surface of materials. As is further known, the formation of hydride phases can be facilitated by the presence of vacancy since vacancy acts as hydrogen trapping site to form hydrides. Therefore, the hydrogen absorption characteristics of Pd could be heavy ions with an energy range of keV such as chromium (Cr) ions. The Pd sample was irradiated with these ions at room temperature at TIARA (Takasaki Ion Accelerators for Advanced Radiation Application) of JAEA (Japan Atomic Energy Agency). The initial hydrogen absorption reaction rate of Pd was investigated before/after ion irradiations using an electrochemical method at room temperature. As a result, the initial hydrogen absorption reaction rate increase due to ion irradiation and the value became 3 ~ 10 times higher than un-irradiated Pd sample by ion irradiations. In order to obtain the information on electric charge of the hydriding process, the work function (contact potential) was also measured at several spots on the surface of Pd samples before/after ion irradiations by use of Kelvin probe. In this paper, the correlation among ion irradiation conditions, work function and initial hydrogen absorption reaction rate of Pd are reported.

show abstract

Improvement of hydrogen absorption rate of Pd by ion irradiation

Cited by 25 publications

References 6 publications

Pd-C powder and thin film catalysts for hydrogen production by hydrolysis of sodium borohydride

Pd-C powder and thin film catalysts for hydrogen production by hydrolysis of sodium borohydride

Positron Beam Studies of Radiation Damage Induced by Various Energy Heavy Ions of Xe²⁶⁺ in Iron

Improvement of Hydrogen Absorption Characteristics of Pd Using Irradiation of Heavy Ions

Contact Info

Product

Resources

About

Improvement of hydrogen absorption rate of Pd by ion irradiation

Cited by 25 publications

References 6 publications

Pd-C powder and thin film catalysts for hydrogen production by hydrolysis of sodium borohydride

Pd-C powder and thin film catalysts for hydrogen production by hydrolysis of sodium borohydride

Positron Beam Studies of Radiation Damage Induced by Various Energy Heavy Ions of Xe26+ in Iron

Improvement of Hydrogen Absorption Characteristics of Pd Using Irradiation of Heavy Ions

Contact Info

Product

Resources

About

Positron Beam Studies of Radiation Damage Induced by Various Energy Heavy Ions of Xe²⁶⁺ in Iron