Layered Nickel-Cobalt Oxide Coatings on Stainless Steel as an Electrocatalyst for Oxygen Evolution Reaction

Water electrolysis: from textbook knowledge to the latest scientific strategies and industrial developments

“…The first reports of electrocatalytically initiated water splitting on steel surfaces were rather fundamental research studies, concerning the kinetic study (particularly) of HER 1194–1202 and OER revealing that, 40–50 years ago, water splitting was not seriously taken into consideration as a technique suitable for the production of alternative fuels. Later steel has been intensively investigated as a conductive support for OER or HER active species 1203–1235,1238 as well as for OER or HER catalytic active alloys. 1236 In one of the latest published articles dedicated to the exploitation of steel as a conductive substrate for HER active electrocatalysts, Jothi et al 1213 describes a very interesting approach that uses scrap stainless steel wires to construct very active hydrogen-evolving electrodes under industrial conditions.…”

Developments and Perspectives on Robust Nano‐ and Microstructured Binder‐Free Electrodes for Bifunctional Water Electrolysis and Beyond

“…In addition to 3D foams, a stainless steel (SS)‐based supporting material has attracted attention for the direct growth of a variety of nano‐ and microstructured materials for enhanced HER/OER performance. [ 150–155 ] For example, Todoroki et al. [ 150 ] demonstrated the synthesis of Ni–Fe hydroxide nanofiber/Ni–Fe oxide heterolayered nanostructures on a 316 SS substrate by employing a simple electrolysis process.…”

“…In addition to 3D foams, a stainless steel (SS)-based supporting material has attracted attention for the direct growth of a variety of nanoand microstructured materials for enhanced HER/OER performance. [150][151][152][153][154][155] For example, Todoroki et al [150] demonstrated the synthesis of Ni-Fe hydroxide nanofiber/Ni-Fe oxide heterolayered nanostructures on a 316 SS substrate by employing a simple electrolysis process. During the initial stage of electrolysis (2 h), the formation of Ni-Fe hydroxide nanofibers was observed using scanning transmission electron microscopy (STEM) analysis, which upon an increase in electrolysis time to 5 h resulted in the growth of heterostructure layers.…”

Low‐cost Trimetallic Ni‐Fe‐Mn Oxides/(Oxy)hydroxides Nanosheets Array for Efficient Oxygen Evolution Reaction

“…[10] In addition, abundant nickel and iron elements exist in the SS, which makes these materials have great potential to be an economical water oxidation electrocatalyst. Previous researches demonstrate that SS can be converted into an efficient electrode for OER through surface treatment, including anodic polarization, [11][12][13][14][15][16][17][18][19] selenylation, [20] nitridation, [21,22] sulfuration, [23,24] phosphorization, [25] hydrothermal reaction, [26][27][28][29][30] electro-deposition, [31][32][33][34][35][36] chemical etch, [37][38][39][40][41][42] laser treatment, [43,44] plasma treatment, [45] and annealing. [46] The treated SS-based electrodes possess excellent water oxidation performances over the SS substrates (Table S1).…”