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Probing the (de)activation of Raney nickel–iron anodes during alkaline water electrolysis by accelerated deactivation testing

dc.contributor.authorJi-Eun Kim
dc.contributor.authorTae-Hyun Kim
dc.contributor.authorChu-Sik Park
dc.contributor.authorKwangjin Jung
dc.contributor.authorJaekyung Yoon
dc.contributor.authorKi-Bong Lee
dc.contributor.authorKyoung-Soo Kang
dc.contributor.otherHydrogen Energy Research Center, Korea Institute of Energy Research, 71-2 Jang-dong, Yuseong-gu, Daejeon 305-343, Republic of Korea; Department of Chemical and Biological Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea
dc.contributor.otherHydrogen Energy Research Center, Korea Institute of Energy Research, 71-2 Jang-dong, Yuseong-gu, Daejeon 305-343, Republic of Korea
dc.contributor.otherHydrogen Energy Research Center, Korea Institute of Energy Research, 71-2 Jang-dong, Yuseong-gu, Daejeon 305-343, Republic of Korea
dc.contributor.otherHydrogen Energy Research Center, Korea Institute of Energy Research, 71-2 Jang-dong, Yuseong-gu, Daejeon 305-343, Republic of Korea
dc.contributor.otherHydrogen Energy Research Center, Korea Institute of Energy Research, 71-2 Jang-dong, Yuseong-gu, Daejeon 305-343, Republic of Korea
dc.contributor.otherDepartment of Chemical and Biological Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea; Corresponding authors.
dc.contributor.otherHydrogen Energy Research Center, Korea Institute of Energy Research, 71-2 Jang-dong, Yuseong-gu, Daejeon 305-343, Republic of Korea; Corresponding authors.
dc.date.accessioned2023-10-26T04:17:28Z
dc.date.accessioned2025-10-08T08:58:15Z
dc.date.available2025-10-08T08:58:15Z
dc.date.issued01-12-2023
dc.identifier.urihttp://digilib.fisipol.ugm.ac.id/repo/handle/15717717/38398
dc.description.abstractWe investigated the (de)activation of Raney nickel–iron anodes in various oxygen evolution reaction (OER) environments using accelerated deactivation testing (ADT) under the conditions of on/off voltage control (ADT1), constant current density (ADT2), and cyclic voltammetry (ADT3). ADT1 caused activation under OER conditions by promoting the leaching of residual zinc and thus increasing the electrode surface area and oxygen vacancy content, whereas deactivation was observed under the conditions of the hydrogen evolution reaction(H-ADT1). ADT2 decreased the OER activity by promoting NiO formation and iron leaching, while ADT3 slightly increased the OER activity by favoring the incorporation of iron into the nickel lattice and promoting nickel–iron hydroxide formation. Thus, this work facilitates the design of more efficient and durable Raney nickel–based OER anodes by providing insights into their (de)activation mechanisms.
dc.language.isoEN
dc.publisherElsevier
dc.subject.lccIndustrial electrochemistry
dc.titleProbing the (de)activation of Raney nickel–iron anodes during alkaline water electrolysis by accelerated deactivation testing
dc.typeArticle
dc.description.keywordsAlkaline water electrolysis
dc.description.keywordsOxygen evolution reaction
dc.description.keywordsAccelerated deactivation testing
dc.description.keywordsRaney nickel
dc.description.keywordsElectrocatalysis
dc.description.keywordsMechanism elucidation
dc.description.doi10.1016/j.elecom.2023.107601
dc.title.journalElectrochemistry Communications
dc.identifier.oaioai:doaj.org/journal:17ea5e77dd904c1bab3143dd7d5efaca


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