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Article Dans Une Revue ChemCatChem Année : 2019

Hierarchical Multiporous Nickel for Oxygen Evolution Reaction in Alkaline Media

Sunpet Assavapanumat
  • Fonction : Auteur
Marisa Ketkaew
  • Fonction : Auteur
Patrick Garrigue
  • Fonction : Auteur
Chularat Wattanakit
Alexander Kuhn

Résumé

Electrochemical water splitting is a crucially important process for energy conversion and storage. In this context, we report the synthesis of hierarchical multiporous nickel nanosheets obtained by a templated two‐step electrodeposition of nickel in the presence of silica beads and an assembly of nonionic surfactant in order to generate a combined macro‐ and mesoporous structure. Interestingly, the synergistic effect of these highly ordered meso‐ and macroporous structures promotes the catalytic performance for oxygen evolution reaction with one order of magnitude higher current densities and a better stability of the electrodes compared to flat nickel or electrodes having a single type of porosity. This example illustrates a promising strategy for the rational design of high‐performance porous metals, not only in the frame of water electrolysis, but also for other electrocatalytic applications.
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Dates et versions

hal-02509760 , version 1 (17-03-2020)

Identifiants

Citer

Sunpet Assavapanumat, Marisa Ketkaew, Patrick Garrigue, Véronique Lapeyre, Stéphane Reculusa, et al.. Hierarchical Multiporous Nickel for Oxygen Evolution Reaction in Alkaline Media. ChemCatChem, 2019, 11 (24), pp.5951-5960. ⟨10.1002/cctc.201901509⟩. ⟨hal-02509760⟩
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