Morphological-modulated FeNi-based amorphous alloys as efficient alkaline water splitting electrocatalysts

Jiang, Shaofei; Zhu, Liya; Yang, Z.Z.; Wang, Yingang

doi:10.1016/j.electacta.2021.138756

Cited by 22 publications

(11 citation statements)

References 61 publications

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“…The preparation process of Fe 35 Ni 35 Co 8 P 20 Mo 2 (marked FN-Mo) amorphous alloy was described in our previous work . Master ingots were melted by high-quality ferrophosphorus together with pure iron, cobalt, nickel, and niobium (or chromium) (99.99%).…”

Section: Methodsmentioning

confidence: 99%

“…marked FN-Mo) amorphous alloy was described in our previous work. 34 Master ingots were melted by high-quality ferrophosphorus together with pure iron, cobalt, nickel, and niobium (or chromium) (99.99%). Under an argon atmosphere, Fe 35 Ni 35 Co 8 P 20 X 2 (X = Nb and Cr) (marked FN-Nb and FN-Cr) ribbons with a thickness of ∼35 μm were obtained employing a single roll melt-spinning device.…”

Section: Introductionmentioning

confidence: 99%

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Insight into the Catalytic Activity of Amorphous Multimetallic Catalysts under a Magnetic Field toward the Oxygen Evolution Reaction

Jiang

Chen

Zhu

et al. 2022

ACS Appl. Mater. Interfaces

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Slow kinetics in the oxygen evolution reaction (OER) remains a Gordian knot to develop an efficient and cost-effective electrocatalyst in electrochemical water splitting. In recent studies, either a synergistic effect on multimetallic catalysts or spin polarization in ferromagnetic materials is considered as a desirable way to improve water electrolysis. Herein, the OER performance of amorphous FeNiCo-based multimetallic catalysts with adjustable composition was investigated from the perspective of atomic structure. Mossbauer spectra results demonstrate that the OER activities exhibit a significant dependence on the local structure of catalysts in which a catalyst with a high content of Fe clusters of low coordination numbers tends to obtain higher activity. Furthermore, benefiting from the spin polarization of these ferromagnetic catalysts, the OER activity is notably enhanced in the presence of a magnetic field. In particular, overpotential reduction exceeding 20 mV (above 100 mA cm −2 ) in alkaline OER performance is observed for strong ferromagnetic catalysts in comparison with the weak ferromagnetic ones. An increment of 65.2% in turnover frequency is achieved for the catalyst with the strongest ferromagnetism. This magnetic enhancement strategy affords an effective way of improving the water oxidation performance on amorphous ferromagnetic catalysts.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Insight into the Catalytic Activity of Amorphous Multimetallic Catalysts under a Magnetic Field toward the Oxygen Evolution Reaction

Jiang

Chen

Zhu

et al. 2022

ACS Appl. Mater. Interfaces

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“…Alloy materials, consisting of multiple metallic and nonmetallic elements, can better utilize the synergistic effect between elements to improve electrocatalytic performance. [70,71] Jiang et al [72] reported a primary ribbon-shaped amorphous alloy composed of iron, nickel, cobalt, molybdenum, and phosphorus elements (FNCMP). In this paper, a hybrid morphology modulation strategy, which combined etching treatment with surface strain engineering, was investigated as a facile and scalable method to prepare highly efficient amorphous alloy electrocatalysts for water splitting in alkaline solution (Figure 5a).…”

Section: Alloy-based Electrocatalystsmentioning

confidence: 99%

“…Alloy materials, consisting of multiple metallic and non‐metallic elements, can better utilize the synergistic effect between elements to improve electrocatalytic performance [70,71] . Jiang et al [72] . reported a primary ribbon‐shaped amorphous alloy composed of iron, nickel, cobalt, molybdenum, and phosphorus elements (FNCMP).…”

Section: Principles and Applications Of Ltimentioning

confidence: 99%

Construction of Non‐Precious Metal Self‐Supported Electrocatalysts for Oxygen Evolution from a Low‐Temperature Immersion Perspective

Xin

Cang

Wang

et al. 2023

The Chemical Record

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Water splitting is considered as a promising technology to solve energy shortage and environmental pollution. Since oxygen evolution reaction (OER) directly affects the efficiency of hydrogen evolution, the preparation of efficient and inexpensive OER catalysts is an urgent problem. “Low‐temperature immersion” (LTI) is expected to be a prospective strategy for electrocatalyst preparation due to its simplicity and energy‐saving advantages. However, there is almost no comprehensive overview on the progress of LTI engineering in the construction of non‐precious metal self‐supported electrocatalysts for OER. Herein, this review firstly introduces the principles and applications of LTI engineering‐assisted preparation of non‐precious metal self‐supported electrocatalysts in terms of etching and deposition. Then the mechanism of OER is analyzed from an amorphous viewpoint, and finally some perspective insights and future challenges of this method are discussed.

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“…The alloys were activated by etching and straining which caused dealloying or induced microcracks. [53,54] For example, modification of FeNiCoMoP alloy involved etching in 0.5 M HNO 3 for 12 h to 24 h and pressing between abrasive papers. [54] In the present work, we used commercial amorphous alloys with and without P: Ni 81 P 19 (MBF-60) and Ni 70 Cr 6 Fe 2 B 14 Si 8 (MBF-20A) which belong to Metallic Glass Brazing Alloys used for soldering of metal parts.…”

Section: Introductionmentioning

confidence: 99%

Anodic Etching of Amorphous Ni₈₁P₁₉ Alloy in Hot Concentrated Chloride Solution for Enhanced Hydrogen Evolution in Alkaline Water Electrolysis

Flis-Kabulska

Flis

2023

ChemElectroChem

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Highly active and easily available electrocatalysts are of great importance for a wider use of water electrolysis for hydrogen production. Herein, electroactivity toward hydrogen evolution reaction was examined in 1.0 M KOH on commercial Ni 81 P 19 (MBF-60) and Ni 70 Cr 6 Fe 2 B 14 Si 8 (MBF-20A) amorphous alloys and for comparison on Ni, untreated and modified by anodic etching in hot concentrated NaCl solutions. This treatment increased the electroactivity of all the materials, but especially of Ni 81 P 19 and particularly of matte side of its ribbons, decreasing overpotential at À 10 mA cm À 2 to À 0.14 V. XRD, SEM/EDS and XPS studies were carried out. EIS measurements indicated that the rise of hydrogen evolution after etching was related mainly to the increase of surface area, and only slightly to the rise of intrinsic electroactivity, probably being due to the formation of NiO. It is proposed that etched Ni 81 P 19 might be an efficient cathode for hydrogen production by water electrolysis.

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Morphological-modulated FeNi-based amorphous alloys as efficient alkaline water splitting electrocatalysts

Cited by 22 publications

References 61 publications

Insight into the Catalytic Activity of Amorphous Multimetallic Catalysts under a Magnetic Field toward the Oxygen Evolution Reaction

Insight into the Catalytic Activity of Amorphous Multimetallic Catalysts under a Magnetic Field toward the Oxygen Evolution Reaction

Construction of Non‐Precious Metal Self‐Supported Electrocatalysts for Oxygen Evolution from a Low‐Temperature Immersion Perspective

Anodic Etching of Amorphous Ni₈₁P₁₉ Alloy in Hot Concentrated Chloride Solution for Enhanced Hydrogen Evolution in Alkaline Water Electrolysis

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Morphological-modulated FeNi-based amorphous alloys as efficient alkaline water splitting electrocatalysts

Cited by 22 publications

References 61 publications

Insight into the Catalytic Activity of Amorphous Multimetallic Catalysts under a Magnetic Field toward the Oxygen Evolution Reaction

Insight into the Catalytic Activity of Amorphous Multimetallic Catalysts under a Magnetic Field toward the Oxygen Evolution Reaction

Construction of Non‐Precious Metal Self‐Supported Electrocatalysts for Oxygen Evolution from a Low‐Temperature Immersion Perspective

Anodic Etching of Amorphous Ni81P19 Alloy in Hot Concentrated Chloride Solution for Enhanced Hydrogen Evolution in Alkaline Water Electrolysis

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Anodic Etching of Amorphous Ni₈₁P₁₉ Alloy in Hot Concentrated Chloride Solution for Enhanced Hydrogen Evolution in Alkaline Water Electrolysis