Partial-sacrificial-template Synthesis of Fe/Ni Phosphides on Ni Foam: a Strongly Stabilized and Efficient Catalyst for Electrochemical Water Splitting

Xiao, Chunhui; Zhang, Bo; Li, Dan

doi:10.1016/j.electacta.2017.05.015

Cited by 60 publications

(30 citation statements)

References 46 publications

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“…[24,27,43] The peak at binding energy of 705.2 eV in the Fe 2p spectrum can be assigned to the Ni auger peak, [44,45] and the peaks at 711.3 and 724.4 eV are accorded with Fe 3 + (Figure 4c). [2,46] No peaks at 719 and 732 eV preclude the existence of an independent Fe 2 O 3 phase. The XPS results further suggest Fe 3 + ions are doped into the Ni 3 S 2 lattice.…”

Section: Resultsmentioning

confidence: 99%

Fe‐Doped Ni₃S₂ Nanowires with Surface‐Restricted Oxidation Toward High‐Current‐Density Overall Water Splitting

Wang

Zhang

et al. 2019

ChemElectroChem

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It is critical to develop a highly effective and economical electrocatalyst to lower the energy losses for the oxygen evolution reaction (OER) and hydrogen evolution reaction (HER). In this work, Fe‐doped Ni3S2 nanowires with diameters of ca. 17 nm and lengths of 1.4∼2 μm are synthesized on Ni foam through a one‐step solvothermal route for alkaline water splitting, which display notable active and excellent durability for both OER and HER under high current densities. The optimal Fe13.7%‐Ni3S2 nanowires electrode can attain 200 mA cm−2 at a fairly low overpotential of 223 mV, and 500 mA cm−2 at 245 mV toward OER. Furthermore, it yields a considerable low overpotential of 109 mV to garner 10 mA cm−2, and 246 mV for 500 mA cm−2 toward HER. The incorporation of iron simultaneously modifies the electronic structure and morphology of Ni3S2, which not only enhances the conductivity but also generates abundant active edge sites. The slight surface‐restricted oxidation of nanowires in a strongly basic electrolyte in situ generates a large number of interfaces, which enables the reactivity and durability for both OER and HER. Accordingly, an alkaline water electrolyzer with two Fe13.7%‐Ni3S2 electrodes only requires a low cell voltage of 1.53 V to achieve 10 mA cm−2, and 1.95 V to 500 mA cm−2 with striking stability. The as‐prepared Fe‐doped Ni3S2 nanowires can be potentially utilized for actual water electrolysis under high current densities.

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Section: Resultsmentioning

confidence: 99%

Fe‐Doped Ni₃S₂ Nanowires with Surface‐Restricted Oxidation Toward High‐Current‐Density Overall Water Splitting

Wang

Zhang

et al. 2019

ChemElectroChem

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“…Based on this, bimetallic Ni phosphides (FeNiP, NiCo, FeNiP) are gaining increasing attention as efficient OER catalysts [60,[100][101][102][103][104]. For example, Xiao et al [103] studied a bimetallic iron nickel phosphide (FeNiP/NF) on Ni foam as a potential OER catalyst, in which the role of the Ni foam was not only to act as a substrate but also as a slow releasing Ni source. In the obtained SEM micrographs shown in Fig.…”

Section: Ni Phosphidesmentioning

confidence: 99%

“…In one example, Yang et al [107] developed [98,103] a novel magnetic field-assisted method for the synthesis of boron-doped NiFe alloys. In this study, the researchers found that the addition of NaBH 4 as a boron doping source decreased the magnetic moment of the intermediate product, resulting in a high specific surface area for the obtained nanochains.…”

Section: Ni-based Alloysmentioning

confidence: 99%

Recent Progresses in Electrocatalysts for Water Electrolysis

Khan

Zhao

Zou

et al. 2018

Electrochem. Energ. Rev.

360

178

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The study of hydrogen evolution reaction and oxygen evolution reaction electrocatalysts for water electrolysis is a developing field in which noble metal-based materials are commonly used. However, the associated high cost and low abundance of noble metals limit their practical application. Non-noble metal catalysts, aside from being inexpensive, highly abundant and environmental friendly, can possess high electrical conductivity, good structural tunability and comparable electrocatalytic performances to state-of-the-art noble metals, particularly in alkaline media, making them desirable candidates to reduce or replace noble metals as promising electrocatalysts for water electrolysis. This article will review and provide an overview of the fundamental knowledge related to water electrolysis with a focus on the development and progress of non-noble metal-based electrocatalysts in alkaline, polymer exchange membrane and solid oxide electrolysis. A critical analysis of the various catalysts currently available is also provided with discussions on current challenges and future perspectives. In addition, to facilitate future research and development, several possible research directions to overcome these challenges are provided in this article.

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“…Herein, we synthesized a flower-like V 4 P 6.98 /VO(PO 3 ) 2 catalyst on a nickel foam substrate as an efficient non-noble metal catalyst for electrochemical hydrogen evolution in alkaline electrolyte. Thus, it remains challenging to develop non-noble metal HER catalysts with a high activity for water splitting in alkaline media.Non-noble metal catalysts based on Co, [4][5][6][7][8] Ni, [9][10][11][12][13][14] Fe, [15][16][17] and Mo [5,[18][19][20] have been intensively used as HER catalysts owing to the high abundance of these elements and the their low cost, and high catalytic activities. We report a low-cost and high-efficiency non-noble metal HER catalyst beyond the commonly used transition metals (Ni, Co, Mo, Cu, and Fe), which expands the scope of non-noble-metal phosphide catalysts for water splitting.…”

mentioning

confidence: 99%

“…This pH mismatch makes it difficult to assemble cells with both HER and OER catalysts for water splitting, and often leads to poor overall performance. Thus, it remains challenging to develop non-noble metal HER catalysts with a high activity for water splitting in alkaline media.Non-noble metal catalysts based on Co, [4][5][6][7][8] Ni, [9][10][11][12][13][14] Fe, [15][16][17] and Mo [5,[18][19][20] have been intensively used as HER catalysts owing to the high abundance of these elements and the their low cost, and high catalytic activities. In the past few years, V-based oxides, sulfides, and nitrides show promise for applications in the field of energy conversion and storage, such as supercapacitors and rechargeable batteries for their high-electrochemical performance and earth abundance.…”

mentioning

confidence: 99%

V₄P_6.98/VO(PO₃)₂ as an Efficient Non‐Noble Metal Catalyst for Electrochemical Hydrogen Evolution in Alkaline Electrolyte

et al. 2019

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Electrocatalytic water splitting for hydrogen production shows great potential for developing hydrogen as an energy source, owing to its low energy consumption and high-purity products. Developing non-noble metal hydrogen evolution reaction (HER) catalysts with a high activity for water splitting in alkaline media is urgent and challenging. Herein, we synthesized a flower-like V 4 P 6.98 /VO(PO 3 ) 2 catalyst on a nickel foam substrate as an efficient non-noble metal catalyst for electrochemical hydrogen evolution in alkaline electrolyte. The catalyst showed high catalytic performance for HER, requiring an overpotential of 159 mV to achieve 10 mA/cm 2 , and displayed long-term stability in alkaline medium. We report a low-cost and high-efficiency non-noble metal HER catalyst beyond the commonly used transition metals (Ni, Co, Mo, Cu, and Fe), which expands the scope of non-noble-metal phosphide catalysts for water splitting.Rising energy demand and environmental concerns have raised public awareness of the need to replace fossil fuels with renewable and carbon-neutral energy sources. Hydrogen is recognized as an ideal choice for a sustainable energy economy and is also widely used in industrial production and daily life. [1] Electrocatalytic water splitting for hydrogen production shows great potential for developing hydrogen as a new energy source owning to its low-energy consumption and high-purity products. [2] To date, noble metals catalysts based on Pt, Ru, and Ir have exhibited high activities for water splitting; however, the high cost and scarcity of noble metals become two biggest obstacles for practical applications on a large scale. The oxygen evolution reaction (OER) and the hydrogen evolution reaction (HER) were two essential part of overall water-splitting process. And OER is the rate-determining reaction in this process, requiring the transfer of four electrons. [3] Generally, HER catalysts operate under acidic conditions, whereas OER is conducted in alkaline media. This pH mismatch makes it difficult to assemble cells with both HER and OER catalysts for water splitting, and often leads to poor overall performance. Thus, it remains challenging to develop non-noble metal HER catalysts with a high activity for water splitting in alkaline media.Non-noble metal catalysts based on Co, [4][5][6][7][8] Ni, [9][10][11][12][13][14] Fe, [15][16][17] and Mo [5,[18][19][20] have been intensively used as HER catalysts owing to the high abundance of these elements and the their low cost, and high catalytic activities. In the past few years, V-based oxides, sulfides, and nitrides show promise for applications in the field of energy conversion and storage, such as supercapacitors and rechargeable batteries for their high-electrochemical performance and earth abundance. [21,22] However, there have been few applications of these materials to water electrolysis. To our knowledge, only Fe 0.5 V 0.5 composites, CoÀ V hydr(oxy)oxide, and NiÀ V double-layered hydroxides have shown high activity as OER catalysts. [23][24]...

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Partial-sacrificial-template Synthesis of Fe/Ni Phosphides on Ni Foam: a Strongly Stabilized and Efficient Catalyst for Electrochemical Water Splitting

Cited by 60 publications

References 46 publications

Fe‐Doped Ni₃S₂ Nanowires with Surface‐Restricted Oxidation Toward High‐Current‐Density Overall Water Splitting

Fe‐Doped Ni₃S₂ Nanowires with Surface‐Restricted Oxidation Toward High‐Current‐Density Overall Water Splitting

Recent Progresses in Electrocatalysts for Water Electrolysis

V₄P_6.98/VO(PO₃)₂ as an Efficient Non‐Noble Metal Catalyst for Electrochemical Hydrogen Evolution in Alkaline Electrolyte

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Partial-sacrificial-template Synthesis of Fe/Ni Phosphides on Ni Foam: a Strongly Stabilized and Efficient Catalyst for Electrochemical Water Splitting

Cited by 60 publications

References 46 publications

Fe‐Doped Ni3S2 Nanowires with Surface‐Restricted Oxidation Toward High‐Current‐Density Overall Water Splitting

Fe‐Doped Ni3S2 Nanowires with Surface‐Restricted Oxidation Toward High‐Current‐Density Overall Water Splitting

Recent Progresses in Electrocatalysts for Water Electrolysis

V4P6.98/VO(PO3)2 as an Efficient Non‐Noble Metal Catalyst for Electrochemical Hydrogen Evolution in Alkaline Electrolyte

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Fe‐Doped Ni₃S₂ Nanowires with Surface‐Restricted Oxidation Toward High‐Current‐Density Overall Water Splitting

Fe‐Doped Ni₃S₂ Nanowires with Surface‐Restricted Oxidation Toward High‐Current‐Density Overall Water Splitting

V₄P_6.98/VO(PO₃)₂ as an Efficient Non‐Noble Metal Catalyst for Electrochemical Hydrogen Evolution in Alkaline Electrolyte