Two-step synthesis of binary Ni–Fe sulfides supported on nickel foam as highly efficient electrocatalysts for the oxygen evolution reaction

Dong, Bin; Zhao, Xin; Han, Gaorong; Li, Xiao; Shang, Xiao; Liu, Yanru; Hu, Wenhui; Chai, Yong‐Ming; Zhao, Hui; Liu, Chenguang

doi:10.1039/c6ta03177c

Cited by 267 publications

(111 citation statements)

References 51 publications

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“…[1,7,13,14] NiÀ FeÀ S is recently studied as a promising water splitting anode material reaching lower reported overpotential values for OER down to 65 mV. [15][16][17][18][19] It should be noted that this low overpotential was, in part, due to the use of high surface area substrates (Ni foam). [15] Furthermore, NiÀ FeÀ S can be used in seawater based electrolytes without forming chlorine.…”

Section: Introductionmentioning

confidence: 99%

“…[15][16][17][18][19] It should be noted that this low overpotential was, in part, due to the use of high surface area substrates (Ni foam). [15] Furthermore, NiÀ FeÀ S can be used in seawater based electrolytes without forming chlorine. [20] NiÀ FeÀ S can be easily formed through hydrothermal treatment [7,9,11] or electrodeposition.…”

Section: Introductionmentioning

confidence: 99%

“…[21][22][23] Literature is currently in disagreeing on the stability of NiÀ FeÀ S, however. [15][16][17][18][19] Many state that the material is stable, [16][17][18][19] though despite the claims of stability an significant increase of about 150 mV is seen over 200 h of continuous operation. [16] The described mode of instability is S destabilization in alkaline media.…”

Section: Introductionmentioning

confidence: 99%

“…[16] The described mode of instability is S destabilization in alkaline media. [15] This mode of destabilization is also underlined by the fact that dissolving Na 2 S in the electrolyte stabilizes the material as it supplies a source of S 2À . [19] In this work, we combine HER and OER electrocatalysts operating at low overpotentials.…”

Section: Introductionmentioning

confidence: 99%

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Basicity and Electrolyte Composition Dependent Stability of Ni‐Fe‐S and Ni‐Mo Electrodes during Water Splitting

Wijten¹,

García-Torregrosa²,

Dijkman³

et al. 2020

ChemPhysChem

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Non‐noble metal electro‐catalysts for water splitting are highly desired when we are moving towards a society where green electrons are becoming abundantly available, offering clear prospects to make our society more sustainable. In this work, Ni−Fe−S is reported as a high performing anode material for the water splitting reaction, operating at low overpotentials and showing high apparent stability. Furthermore, Ni−Mo electrodes are developed on metallic foam substrates and optimized in terms of their performance. The Ni−Fe−S material as anode, combined and integrated with Ni−Mo as cathode in a cell configuration, splits water at 10 mA cm−2 and a potential of 1.55 V. Similar to previous reports, we confirm that Mo leaches from Ni−Mo/Ni foam electrodes. Cycling tests and ICP‐AES measurements show that the stability of Ni−Fe−S is apparent, and that in reality S is leaching from the material as was already suggested in literature. We expand on this knowledge and show that the leaching of S is dependent on both pH and the cation used during electrocatalysis. Furthermore, we find that applying an oxidative potential is in truth stabilizing towards S and that the alkalinity causes leaching. S was furthermore mobile and found to segregate towards the surface. Finally, using too low pH values (11 and lower) result in the passivating hydroxide metal layers being destroyed and the Ni−Fe−S dissolving completely.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Basicity and Electrolyte Composition Dependent Stability of Ni‐Fe‐S and Ni‐Mo Electrodes during Water Splitting

Wijten¹,

García-Torregrosa²,

Dijkman³

et al. 2020

ChemPhysChem

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“…[69,71,77,[257][258][259] For example, Fe 0.1 Ni 0.9 S 2 nanoarrys were deposited on a Ti mesh through gas-phase sulfidation of Ni-Fe-LDH nanoarrys. [77] As an electrode for the HER, the Fe 0.1 Ni 0.9 S 2 /Ti electrode only required a low overpotential of 231 mV versus RHE to drive a current density of 100 mA cm −2 with a small Tafel slope of 43 mV dec −1 in 1.0 m KOH, while the overpotential was further decreased to 212 mV in 30 wt% KOH.…”

Section: Ni-fe-smentioning

confidence: 99%

Mixed Metal Sulfides for Electrochemical Energy Storage and Conversion

Lou

2017

Advanced Energy Materials

692

319

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Mixed metal sulfides (MMSs) have attracted increased attention as promising electrode materials for electrochemical energy storage and conversion systems including lithium‐ion batteries (LIBs), sodium‐ion batteries (SIBs), hybrid supercapacitors (HSCs), metal–air batteries (MABs), and water splitting. Compared with monometal sulfides, MMSs exhibit greatly enhanced electrochemical performance, which is largely originated from their higher electronic conductivity and richer redox reactions. In this review, recent progresses in the rational design and synthesis of diverse MMS‐based micro/nanostructures with controlled morphologies, sizes, and compositions for LIBs, SIBs, HSCs, MABs, and water splitting are summarized. In particular, nanostructuring, synthesis of nanocomposites with carbonaceous materials and fabrication of 3D MMS‐based electrodes are demonstrated to be three effective approaches for improving the electrochemical performance of MMS‐based electrode materials. Furthermore, some potential challenges as well as prospects are discussed to further advance the development of MMS‐based electrode materials for next‐generation electrochemical energy storage and conversion systems.

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Electrochemical Water Splitting

Liu

Dastafkan

Zhao

2021

Heterogeneous Catalysts

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Two-step synthesis of binary Ni–Fe sulfides supported on nickel foam as highly efficient electrocatalysts for the oxygen evolution reaction

Abstract: A facile two-step method has been used to synthesize binary Ni–Fe sulfides supported on nickel foam (NF) as electrocatalysts for the oxygen evolution reaction (OER).

Cited by 267 publications

References 51 publications

Basicity and Electrolyte Composition Dependent Stability of Ni‐Fe‐S and Ni‐Mo Electrodes during Water Splitting

Basicity and Electrolyte Composition Dependent Stability of Ni‐Fe‐S and Ni‐Mo Electrodes during Water Splitting

Mixed Metal Sulfides for Electrochemical Energy Storage and Conversion

Electrochemical Water Splitting

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