Electrochemically activated-iron oxide nanosheet arrays on carbon fiber cloth as a three-dimensional self-supported electrode for efficient water oxidation

Yan, Feng; Zhu, Chunling; Wang, Shuo; Zhao, Yang; Zhang, Xitian; Li, Chunyan; Chen, Yujin

doi:10.1039/c6ta00456c

Cited by 65 publications

(33 citation statements)

References 78 publications

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“…Nevertheless, their scarcity and high cost hinder the large-scale deployment. Recently, transition metal compounds came into view with the advantage of low cost and high activity for OER including MnO [76,77] , FeO [78,79] , CoO [80,81] and NiO [82,83] . Some of them were coated on nickel foam to enhance the OER performance and high stability [60,84,85] .…”

Section: Nife-based Electrocatalysts On Nickel Foam For Oermentioning

confidence: 99%

NiFe-based nanostructures on nickel foam as highly efficiently electrocatalysts for oxygen and hydrogen evolution reactions

Zhang

et al. 2019

Journal of Energy Chemistry

172

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Section: Nife-based Electrocatalysts On Nickel Foam For Oermentioning

confidence: 99%

NiFe-based nanostructures on nickel foam as highly efficiently electrocatalysts for oxygen and hydrogen evolution reactions

Zhang

et al. 2019

Journal of Energy Chemistry

172

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“…After a long‐term electrochemical test, mechanical morphology of NiCo 2 S 4 /NF after overall water splitting could be largely retained, as revealed by SEM pattern (Figure S4, Supporting Information). The composition of the bifunctional NiCo 2 S 4 /NF after overall water splitting was analyzed by EDS (Figure S4, Supporting Information) …”

Section: Resultsmentioning

confidence: 99%

Crossed NiCo₂S₄ Nanowires Supported on Nickel Foam as a Bifunctional Catalyst for Efficient Overall Water Splitting

et al. 2019

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Increasing demands for renewable clean fuel and environmental protection have attracted much research on energy production and conversion. Designing efficient and stable electrocatalysts, which has been recognized as one of the primary goals for anodic oxygen evolution reaction (OER) and hydrogen evolution reaction (HER), provides the most prospective route towards mass production of hydrogen from renewable sources. In this paper, 3D-networked, ultrathin, and crossed nanowires NiCo 2 S 4 grown on Ni foam (NF) was successfully synthesized by a simple hydrothermal method and worked as a unprecious metal-based overall water splitting electrocatalyst. NiCo 2 S 4 /NF possess predominant catalytic activity with an overpotential of 251 mV to drive a current density of 40 mA cm À 2 in alkaline media and 191 mV at 10 mA cm À 2 for HER in 1.0 M KOH electrolyte. Moreover, NiCo 2 S 4 /NF j j NiCo 2 S 4 / NF was constructed by employing NiCo 2 S 4 /NF as both the cathode and anode, the overall water splitting electrolyzer results revealed that only 1.59 V was required to reach the current density of 10 mA cm À 2 . Notably, NiCo 2 S 4 /NF j j NiCo 2 S 4 / NF also shows long-term electrochemical durability with its activity being retained for over 12 h-long. The newly developed cost-effective high efficent electrocatalyst towards water splitting provides a novel approach for the design of earthabundant transition metal sulfide for high efficiency overall water splitting electrode.

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“…Carbon paper was applieda st he current collector owing to its low cost, high conductivity,c hemical stability,a nd inert OER performance. [31,32] The synthesized catalysts were named for the different Co/ Fe feed ratios (e.g.,C o 0.75 Fe 0.25 BO/CP meanst he feed ratio of Co/Fe was 3:1). The scanning electronm icroscopy (SEM) images ( Figure 1b and Figure S1 in the Supporting Information) show that CoFe borate nanoparticlesw ere uniformly distributed on the 3D porous carbon paper electrode.…”

Section: Resultsmentioning

confidence: 99%

Amorphous Cobalt Iron Borate Grown on Carbon Paper as a Precatalyst for Water Oxidation

Liu

Qiao

et al. 2019

ChemSusChem

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The key to improving water oxidation is to develop efficient and earth‐abundant catalysts for the oxygen evolution reaction (OER). Herein, a new amorphous cobalt iron borate supported on 3D carbon paper integrated electrode is reported as a precatalyst for the OER, which was synthesized by using a one‐pot hydrothermal method. An optimum OER activity was obtained at 25 % Fe doping by screening the compositions of the Co and Fe. The best synthesized catalyst needs an overpotential of 227 mV to deliver a current density of 10 mA cm−2 and also exhibits a long‐term durability of 24 h. Impressively, we find that CoFe oxyhydroxide was formed in situ in the OER process, which serves as the real catalytic active species for OER. Moreover, the direct conversion from CoFe borate to CoFe oxyhydroxide is reported for the first time in metal borate OER catalysts. The discovery in this work, that is, that metal borate as a precursor can efficiently catalyze the OER in alkaline media, significantly widens the family of OER catalysts.

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Electrochemically activated-iron oxide nanosheet arrays on carbon fiber cloth as a three-dimensional self-supported electrode for efficient water oxidation

Abstract: Electrochemically activated-3D self-supported electrodes composed of iron oxide nanosheets and carbon fiber cloth exhibited superior activity and long-term stability toward the oxygen evolution reaction.

Cited by 65 publications

References 78 publications

NiFe-based nanostructures on nickel foam as highly efficiently electrocatalysts for oxygen and hydrogen evolution reactions

NiFe-based nanostructures on nickel foam as highly efficiently electrocatalysts for oxygen and hydrogen evolution reactions

Crossed NiCo₂S₄ Nanowires Supported on Nickel Foam as a Bifunctional Catalyst for Efficient Overall Water Splitting

Amorphous Cobalt Iron Borate Grown on Carbon Paper as a Precatalyst for Water Oxidation

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Electrochemically activated-iron oxide nanosheet arrays on carbon fiber cloth as a three-dimensional self-supported electrode for efficient water oxidation

Abstract: Electrochemically activated-3D self-supported electrodes composed of iron oxide nanosheets and carbon fiber cloth exhibited superior activity and long-term stability toward the oxygen evolution reaction.

Cited by 65 publications

References 78 publications

NiFe-based nanostructures on nickel foam as highly efficiently electrocatalysts for oxygen and hydrogen evolution reactions

NiFe-based nanostructures on nickel foam as highly efficiently electrocatalysts for oxygen and hydrogen evolution reactions

Crossed NiCo2S4 Nanowires Supported on Nickel Foam as a Bifunctional Catalyst for Efficient Overall Water Splitting

Amorphous Cobalt Iron Borate Grown on Carbon Paper as a Precatalyst for Water Oxidation

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Crossed NiCo₂S₄ Nanowires Supported on Nickel Foam as a Bifunctional Catalyst for Efficient Overall Water Splitting