In situ templating synthesis of mesoporous Ni–Fe electrocatalyst for oxygen evolution reaction

Abstract

A stable mesoporous Ni–Fe–O electrocatalyst with high OER efficiency is constructed using mesoporous fumed silica as a template.

Preparation and Electrochemical Characterisation of an Iron‐Nickel‐Doped Sucrose‐Derived Carbon Material for the Oxygen Evolution Reaction

“…The bimetallic catalyst (Fe−Ni@SC) shows right shifted redox potential because Fe stimulates the Ni metal and increased the redox peak area compared with mono‐metal catalyst (Figure S5). The Fe content may inhibit the oxidation reaction of Ni OH to NiOOH and it may alter the number of electrons transmitted for each Ni atom [49,50] . Fewer active sites of Ni present on the surface of the catalyst diminished the catalyst activity [51] .…”

“…The Fe content may inhibit the oxidation reaction of Ni OH to NiOOH and it may alter the number of electrons transmitted for each Ni atom. [49,50] Fewer active sites of Ni present on the surface of the catalyst diminished the catalyst activity. [51] The excellent OER performance of bimetallic catalyst, FeÀ Ni@SC compared with pristine SC may because of the use of carbon black as a supportive substance.…”

NaBH4 induces a high ratio of Ni3+/Ni2+ boosting OER activity of the NiFe LDH electrocatalyst

“…[1][2][3] In this process, the oxygen evolution reaction (OER) is the rate determining half reaction due to its four-electron transfer process leading to a high overpotential. [4][5][6][7][8] Therefore, efficient yet low-cost oxygen evolution catalysts that could greatly accelerate the intrinsically slow kinetics and lower the unacceptable overpotential of OER are of key importance. 9 In the past decades, great efforts have been made in exploring durable and efficient electrocatalysts.…”

Synthesis and Electronic Modulation of Nanostructured Layered Double Hydroxides for Efficient Electrochemical Oxygen Evolution

“…In contrast to the “bottom‐up” approach, the “top‐down” methods usually use chemical intercalation or physical shear force to interrupt adjacent layers interaction to obtain few‐layered nanosheets [47,84] . Bulk LDHs are solid and possess loose interlayer forces and relatively stable chemical bonds in the plane [85–87] . Peeling parent LDHs crystals into monolayer or a few layers of nanosheets can reveal plentiful reaction sites, thus further enhancing the OER activity.…”