Electrochemical characterization of Raney nickel electrodes prepared by atmospheric plasma spraying for alkaline water electrolysis

Ji-Eun Kim; Ki-Kwang Bae; Chu-Sik Park; Seong-Uk Jeong; Kyeong-Ho Baik; Jeong-Won Kim; Kyoung-Soo Kang; Ki-Bong Lee; Young-Ho Kim

Journal of Industrial and Engineering Chemistry, Vol.70, 160-168, February, 2019

DOI10.1016/j.jiec.2018.10.010 Export Citation

Electrochemical characterization of Raney nickel electrodes prepared by atmospheric plasma spraying for alkaline water electrolysis

Ji-Eun Kim^{1, 2}, Ki-Kwang Bae¹, Chu-Sik Park¹, Seong-Uk Jeong¹, Kyeong-Ho Baik³, Jeong-Won Kim¹, Kyoung-Soo Kang^{1, †}, Ki-Bong Lee^{2, †}, and Young-Ho Kim⁴

¹Hydrogen Laboratory, Korea Institute of Energy Research, 152 Gajeong-ro, Yuseong-gu, Daejeon 34129, Republic of Korea
²Department of Chemical and Biological Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea
³Department of Materials Science and Engineering, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 34134, Republic of Korea
⁴Department of Chemical Engineering Applied Chemistry, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 34134, Republic of Korea

E-mail:,

A Raney Ni electrode was prepared by the simple and economical atmospheric plasma spraying method. It showed excellent performance for hydrogen evolution reaction (HER), as indicated by a Tafel slope of 54 mV/dec and overvoltage of 108 mV at 300 mA/cm2. The Ni.Al alloy coating contained a NiAl phase, which has a very slow Al leaching rate in alkaline solution. H2 heat treatment of the electrode enhanced the uniformity of Al distribution in the coating and adhesion of the coating to the substrate. However, the HER performance did not improve and the electrode was rendered more structurally vulnerable to deactivation.

Keywords:Water electrolysis;Alkaline electrolysis;Raney nickel;Hydrogen evolution reaction;Electrode deactivation;Atmospheric plasma spraying

[References]

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Babar PT, Lokhande AC, Gang MG, Pawar BS, Pawar SM, Kim JH, J. Ind. Eng. Chem., 60, 493 (2018)
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Kjartansdottir C, Caspersen M, Egelund S, Moller P, Electrochim. Acta, 142, 324 (2014)
Chade D, Berlouis L, Infield D, Cruden A, Nielsen PT, Mathiesen T, Int. J. Hydrog. Energy, 38(34), 14380 (2013)
Xiang C, Papadantonakis KM, Lewis NS, Mater. Horiz., 3, 169 (2016)
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[12] Safizadeh F, Ghali E, Houlachi G, Int. J. Hydrog. Energy, 40(1), 256 (2015)

[13] Lupi C, Dell'Era A, Pasquali M, Int. J. Hydrog. Energy, 34(5), 2101 (2009)

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[15] Parhi PK, Park KH, Senanayake G, J. Ind. Eng. Chem., 19(2), 589 (2013)

[16] Chen L, Lasia A, J. Electrochem. Soc., 138, 3321 (1991)

[17] Birry L, Lasia A, J. Appl. Electrochem., 34(7), 735 (2004)

[18] Lohrberg K, Kohl P, Electrochim. Acta, 29, 1557 (1984)

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[20] Schiller G, Borck V, Int. J. Hydrog. Energy, 17, 261 (1992)

[21] Fournier J, Miousse D, Legoux JG, Int. J. Hydrog. Energy, 24, 519 (1999)

[22] Henne R, Schnurnberger W, Weber W, Thin Solid Films, 119, 141 (1984)

[23] Konieczny M, Mola R, Thomas P, Kopcial M, Arch. Metall. Mater., 56, 693 (2011)

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[26] Brown IJ, Sotiropoulos S, Electrochim. Acta, 46(17), 2711 (2001)

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