Hydrogen accumulation in surface of perfluorosulfonic acid membranes after γ-ray irradiation using elastic recoil detection techniques

Toru Adachi; Shinji Nagata; Naofumi Ohtsu; Bun Tsuchiya; Kentaro Toh; Tatsuo Shikama

doi:10.1143/JJAP.45.6385

Hydrogen accumulation in surface of perfluorosulfonic acid membranes after γ-ray irradiation using elastic recoil detection techniques

Toru Adachi, Shinji Nagata, Naofumi Ohtsu, Bun Tsuchiya, Kentaro Toh, Tatsuo Shikama

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

Electrical conductivity measurements and elastic recoil detection (ERD) analysis were carried our on perfluorosulfonic acid membranes that were irradiated by ⁶⁰Co γ-ray. Maximum electrical conductivity of irradiated specimen was obtained at 40-60°C, though that of unirradiated specimen increased with increasing temperature. And 4000-fold higher conductivity was obtained in irradiated membrane at 40°C under dry condition. ERD analysis indicated that hydrogen concentration of the irradiated membrane is 1.5-fold higher than that of the unirradiated specimen. It is considered that the γ-ray generates a lot of site that can trap hydrogen and the trapped hydrogen cannot easily move. As the results, irradiated membrane retains more hydrogen than unirradiated one and the electrical conductivity of irradiated membrane is higher than that of unirradiated membrane in any conditions. γ-Ray irradiation is effective for improving the electrical conductivity of proton-conducting membranes.

Original language	English
Pages (from-to)	6385-6387
Number of pages	3
Journal	Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume	45
Issue number	8 A
DOIs	https://doi.org/10.1143/JJAP.45.6385
Publication status	Published - 2006 Aug 4
Externally published	Yes

Keywords

ERD
Hydrogen
Perfluorosulfonic acid membranes
Proton conduction
γ-ray irradiation

ASJC Scopus subject areas

Engineering(all)
Physics and Astronomy(all)

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10.1143/JJAP.45.6385

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Hydrogen accumulation in surface of perfluorosulfonic acid membranes after γ-ray irradiation using elastic recoil detection techniques. / Adachi, Toru; Nagata, Shinji; Ohtsu, Naofumi; Tsuchiya, Bun; Toh, Kentaro; Shikama, Tatsuo.

In: Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers, Vol. 45, No. 8 A, 04.08.2006, p. 6385-6387.

Research output: Contribution to journal › Article › peer-review

Adachi, T, Nagata, S, Ohtsu, N, Tsuchiya, B, Toh, K & Shikama, T 2006, 'Hydrogen accumulation in surface of perfluorosulfonic acid membranes after γ-ray irradiation using elastic recoil detection techniques', Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers, vol. 45, no. 8 A, pp. 6385-6387. https://doi.org/10.1143/JJAP.45.6385

Adachi, Toru ; Nagata, Shinji ; Ohtsu, Naofumi ; Tsuchiya, Bun ; Toh, Kentaro ; Shikama, Tatsuo. / Hydrogen accumulation in surface of perfluorosulfonic acid membranes after γ-ray irradiation using elastic recoil detection techniques. In: Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers. 2006 ; Vol. 45, No. 8 A. pp. 6385-6387.

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title = "Hydrogen accumulation in surface of perfluorosulfonic acid membranes after γ-ray irradiation using elastic recoil detection techniques",

abstract = "Electrical conductivity measurements and elastic recoil detection (ERD) analysis were carried our on perfluorosulfonic acid membranes that were irradiated by 60Co γ-ray. Maximum electrical conductivity of irradiated specimen was obtained at 40-60°C, though that of unirradiated specimen increased with increasing temperature. And 4000-fold higher conductivity was obtained in irradiated membrane at 40°C under dry condition. ERD analysis indicated that hydrogen concentration of the irradiated membrane is 1.5-fold higher than that of the unirradiated specimen. It is considered that the γ-ray generates a lot of site that can trap hydrogen and the trapped hydrogen cannot easily move. As the results, irradiated membrane retains more hydrogen than unirradiated one and the electrical conductivity of irradiated membrane is higher than that of unirradiated membrane in any conditions. γ-Ray irradiation is effective for improving the electrical conductivity of proton-conducting membranes.",

keywords = "ERD, Hydrogen, Perfluorosulfonic acid membranes, Proton conduction, γ-ray irradiation",

author = "Toru Adachi and Shinji Nagata and Naofumi Ohtsu and Bun Tsuchiya and Kentaro Toh and Tatsuo Shikama",

year = "2006",

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doi = "10.1143/JJAP.45.6385",

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T1 - Hydrogen accumulation in surface of perfluorosulfonic acid membranes after γ-ray irradiation using elastic recoil detection techniques

AU - Adachi, Toru

AU - Nagata, Shinji

AU - Ohtsu, Naofumi

AU - Tsuchiya, Bun

AU - Toh, Kentaro

AU - Shikama, Tatsuo

PY - 2006/8/4

Y1 - 2006/8/4

N2 - Electrical conductivity measurements and elastic recoil detection (ERD) analysis were carried our on perfluorosulfonic acid membranes that were irradiated by 60Co γ-ray. Maximum electrical conductivity of irradiated specimen was obtained at 40-60°C, though that of unirradiated specimen increased with increasing temperature. And 4000-fold higher conductivity was obtained in irradiated membrane at 40°C under dry condition. ERD analysis indicated that hydrogen concentration of the irradiated membrane is 1.5-fold higher than that of the unirradiated specimen. It is considered that the γ-ray generates a lot of site that can trap hydrogen and the trapped hydrogen cannot easily move. As the results, irradiated membrane retains more hydrogen than unirradiated one and the electrical conductivity of irradiated membrane is higher than that of unirradiated membrane in any conditions. γ-Ray irradiation is effective for improving the electrical conductivity of proton-conducting membranes.

AB - Electrical conductivity measurements and elastic recoil detection (ERD) analysis were carried our on perfluorosulfonic acid membranes that were irradiated by 60Co γ-ray. Maximum electrical conductivity of irradiated specimen was obtained at 40-60°C, though that of unirradiated specimen increased with increasing temperature. And 4000-fold higher conductivity was obtained in irradiated membrane at 40°C under dry condition. ERD analysis indicated that hydrogen concentration of the irradiated membrane is 1.5-fold higher than that of the unirradiated specimen. It is considered that the γ-ray generates a lot of site that can trap hydrogen and the trapped hydrogen cannot easily move. As the results, irradiated membrane retains more hydrogen than unirradiated one and the electrical conductivity of irradiated membrane is higher than that of unirradiated membrane in any conditions. γ-Ray irradiation is effective for improving the electrical conductivity of proton-conducting membranes.

KW - ERD

KW - Hydrogen

KW - Perfluorosulfonic acid membranes

KW - Proton conduction

KW - γ-ray irradiation

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Hydrogen accumulation in surface of perfluorosulfonic acid membranes after γ-ray irradiation using elastic recoil detection techniques

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Keywords

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