Outstanding oxygen evolution reaction performance of nickel iron selenide/stainless steel mat for water electrolysis

In this paper, a new environmentally-friendly anode for hydrogen production was developed based on 430 stainless steel with an electrodeposited cobalt layer. The novelty of this work is the cobalt source once the electrodeposition bath was obtained from acid dissolution of a spent Li-ion battery cathode. The oxygen evolution reaction on electrodeposited cobalt in 1 M KOH is compatible with the E. Kobussen mechanism. The water discharge is related with reaction determinant step in low overpotential. The cobalt electrodeposition (3 Ccm−2) promotes a significant improvement of 430 stainless steel anodic properties for oxygen evolution reaction. When the overpotential reaches 370 mV, the density current for 430 stainless steel with electrodeposit cobalt is 19 mA·cm−2 against 0.80 mA·cm−2 for 430 stainless steel without cobalt. Thus, the anode construction described in this paper is an excellent option for Li-ion battery recycling.

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Construction of a Pliable Electrode System for Effective Electrochemical Oxygen Evolution Reaction: Direct Growth of Nickel/Iron/Selenide Nanohybrids on Nickel Foil

ACS Sustainable Chemistry & Engineering ◽

10.1021/acssuschemeng.0c05857 ◽

2020 ◽

Vol 8 (36) ◽

pp. 13859-13867

Author(s):

Suncheol Kim ◽

Hyojong Yoo

Keyword(s):

Oxygen Evolution ◽

Oxygen Evolution Reaction ◽

Electrode System ◽

Nickel Foil ◽

Nickel Iron ◽

Iron Selenide ◽

Direct Growth ◽

Electrochemical Oxygen

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3D mesoporous rose-like nickel-iron selenide microspheres as advanced electrocatalysts for the oxygen evolution reaction

Nano Research ◽

10.1007/s12274-017-1832-8 ◽

2018 ◽

Vol 11 (4) ◽

pp. 2149-2158 ◽

Cited By ~ 32

Author(s):

Jiahao Yu ◽

Gongzhen Cheng ◽

Wei Luo

Keyword(s):

Oxygen Evolution ◽

Oxygen Evolution Reaction ◽

Nickel Iron ◽

Iron Selenide

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Porous Nickel–Iron Selenide Nanosheets as Highly Efficient Electrocatalysts for Oxygen Evolution Reaction

ACS Applied Materials & Interfaces ◽

10.1021/acsami.6b03392 ◽

2016 ◽

Vol 8 (30) ◽

pp. 19386-19392 ◽

Cited By ~ 175

Author(s):

Zhaoyang Wang ◽

Jiantao Li ◽

Xiaocong Tian ◽

Xuanpeng Wang ◽

Yang Yu ◽

...

Keyword(s):

Oxygen Evolution ◽

Oxygen Evolution Reaction ◽

Porous Nickel ◽

Nickel Iron ◽

Iron Selenide ◽

Highly Efficient

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Postsynthetic treatment of nickel–iron layered double hydroxides for the optimum catalysis of the oxygen evolution reaction

npj 2D Materials and Applications ◽

10.1038/s41699-021-00249-6 ◽

2021 ◽

Vol 5 (1) ◽

Author(s):

Daire Tyndall ◽

Sonia Jaskaniec ◽

Brian Shortall ◽

Ahin Roy ◽

Lee Gannon ◽

...

Keyword(s):

Oxygen Evolution ◽

Oxygen Evolution Reaction ◽

Size Control ◽

Operating Conditions ◽

Nickel Iron ◽

Treatment Techniques ◽

Site Density ◽

Synthetic Approaches ◽

Double Hydroxide ◽

Double Hydroxides

AbstractNickel–iron-layered double hydroxide (NiFe LDH) platelets with high morphological regularity and submicrometre lateral dimensions were synthesized using a homogeneous precipitation technique for highly efficient catalysis of the oxygen evolution reaction (OER). Considering edge sites are the point of activity, efforts were made to control platelet size within the synthesized dispersions. The goal is to controllably isolate and characterize size-reduced NiFe LDH particles. Synthetic approaches for size control of NiFe LDH platelets have not been transferable based on published work with other LDH materials and for that reason, we instead use postsynthetic treatment techniques to improve edge-site density. In the end, size-reduced NiFe LDH/single-wall carbon nanotube (SWCNT) composites allowed to further reduce the OER overpotential to 237 ± 7 mV (<L> = 0.16 ± 0.01 μm, 20 wt% SWCNT), which is one of the best values reported to date. This approach as well improved the long-term activity of the catalyst in operating conditions.

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The Effect of Iron Impurities on Transition Metal Catalysts for the Oxygen Evolution Reaction in Alkaline Environment: Activity Mediators or Active Sites?

Catalysis Letters ◽

10.1007/s10562-020-03478-4 ◽

2020 ◽

Author(s):

Ioannis Spanos ◽

Justus Masa ◽

Aleksandar Zeradjanin ◽

Robert Schlögl

Keyword(s):

Transition Metal ◽

Oxygen Evolution ◽

Oxygen Evolution Reaction ◽

Active Sites ◽

Water Electrolysis ◽

Metal Catalysts ◽

Transition Metal Catalysts ◽

Alkaline Water Electrolysis ◽

Co Catalysts ◽

Model Transition

AbstractThere is an ongoing debate on elucidating the actual role of Fe impurities in alkaline water electrolysis, acting either as reactivity mediators or as co-catalysts through synergistic interaction with the main catalyst material. This perspective summarizes the most prominent oxygen evolution reaction (OER) mechanisms mostly for Ni-based oxides as model transition metal catalysts and highlights the effect of Fe incorporation on the catalyst surface in the form of impurities originating from the electrolyte or co-precipitated in the catalyst lattice, in modulating the OER reaction kinetics, mechanism and stability. Graphic Abstract

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Stainless steel made to rust: a robust water-splitting catalyst with benchmark characteristics

Energy & Environmental Science ◽

10.1039/c5ee01601k ◽

2015 ◽

Vol 8 (9) ◽

pp. 2685-2697 ◽

Cited By ~ 111

Author(s):

Helmut Schäfer ◽

Shamaila Sadaf ◽

Lorenz Walder ◽

Karsten Kuepper ◽

Stephan Dinklage ◽

...

Keyword(s):

Stainless Steel ◽

Water Splitting ◽

Oxygen Evolution ◽

Oxygen Evolution Reaction ◽

Surface Oxidation

Stainless steel was upon electro-initiated surface oxidation converted in an oxygen evolution reaction (OER) electrocatalyst with benchmark properties.

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