Shape-controlled synthesis of thorn-like 1D phosphorized Co supported by Ni foam electrocatalysts for overall water splitting

Khiarak, Behnam Nourmohammadi; Zahraei, Ayda Asaadi; nazarzade, Kosar; Hasanjani, Hamid Reza Akbari; Mohammadzadeh, Hurieh

doi:10.1007/s10854-021-06379-3

Cited by 4 publications

(3 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The Tafel plots, which associate the rate of electrochemical reactions with the overpotential, ,, determine values of 58 mV/dec (for the OER) and 68 mV/dec (for the HER) for the most active electrocatalyst that is superior to the others. The homogeneity of a catalytic surface is crucial to obtain a high electrochemical rate (associated with the Tafel slope) as the surface heterogeneity distributes the current density along the working electrode . Besides, the porous structure with rough surfaces would weaken the adsorption of water molecules binding on the surface and boost the revolution of proton atoms to hydrogen gas. , As compared with other materials reported in the literature (Tables S1 and S2), the copper-rich electrocatalyst only needs a low overpotential to yield a sufficient current density (selected at 10 and 100 mA·cm –2 ).…”

Section: Results and Discussionmentioning

confidence: 99%

Efficient Electrocatalytic Overall Water Splitting on a Copper-Rich Alloy: An Electrochemical Study

et al. 2022

Self Cite

View full text Add to dashboard Cite

The development of active, durable, cost-effective, and stable electrocatalysts is an urgent need for various industrial fields including renewable energy systems. The state-of-the-art catalysts suffer from poor water splitting activity in alkaline media due to their sluggish kinetics, high cost, and scarcity on earth to be scaled up. Herein, we present an electrochemical analysis of a nanostructured electrocatalyst based on a face-centered cubic (FCC) copper-rich Cu–Ni–Fe–Cr–Co alloy with a quasi-spherical morphology electrodeposited on a highly porous nickel substrate. Electrochemical studies determine the enhanced electrocatalytic activity toward both hydrogen and oxygen reactions in an alkaline medium, which has been induced by the synergistic effect of alloy metals. It is shown that the performance of the presented electrocatalyst for both the oxygen evolution reaction and hydrogen evolution reaction is superior to the recently reported electrocatalysts for overall water splitting. Benefiting from its long-term durability, the material can pave the way to developing high-performance electrocatalysts for full electrochemical water splitting.

show abstract

Section: Results and Discussionmentioning

confidence: 99%

Efficient Electrocatalytic Overall Water Splitting on a Copper-Rich Alloy: An Electrochemical Study

et al. 2022

Self Cite

View full text Add to dashboard Cite

show abstract

“…S1: Weight and atomic ratios of the corresponding elements of FeCoNiMoZn-OH HEH; Table S2: Comparison of TOF at the corresponding overpotentials of FeCoNiMoZn-OH HEH catalyst with recently reported other electrocatalysts. References [61][62][63][64][65][66][67] are cited in the Supplementary Materials.…”

Section: Supplementary Materialsmentioning

confidence: 99%

Novel High-Entropy FeCoNiMoZn-Layered Hydroxide as an Efficient Electrocatalyst for the Oxygen Evolution Reaction

Cheng,

Han,

Han

et al. 2024

Nanomaterials

View full text Add to dashboard Cite

The exploration of catalysts for the oxygen evolution reaction (OER) with high activity and acceptable price is essential for water splitting to hydrogen generation. High-entropy materials (HEMs) have aroused increasing interest in the field of electrocatalysis due to their unusual physicochemical properties. In this work, we reported a novel FeCoNiMoZn-OH high entropy hydroxide (HEH)/nickel foam (NF) synthesized by a facile pulsed electrochemical deposition method at room temperature. The FeCoNiMoZn-OH HEH displays a 3D porous nanosheet morphology and polycrystalline structure, which exhibits extraordinary OER activity in alkaline media, including much lower overpotential (248 mV at 10 mA cm−2) and Tafel slope (30 mV dec−1). Furthermore, FeCoNiMoZn-OH HEH demonstrates excellent OER catalytic stability. The enhanced catalytic performance of the FeCoNiMoZn-OH HEH primarily contributed to the porous morphology and the positive synergistic effect between Mo and Zn. This work provides a novel insight into the design of HEMs in catalytic application.

show abstract

“…Therefore, replacing natural energy sources with other reversible and renewable energy sources is among the most crucial demands for humankind. 15,118 In this regard, electrochemical water splitting, either through electrocatalysts or photo-electrocatalysts, is a more favourable way to produce hydrogen, which can be utilized as a promising energy source to replace natural sources.…”

Section: Overview Of Mxenes Electrochemical Applicationsmentioning

confidence: 99%

2D MXene nanocomposites: electrochemical and biomedical applications

Farani

Khiarak

Tao

et al. 2022

Environ. Sci.: Nano

View full text Add to dashboard Cite

show abstract

Shape-controlled synthesis of thorn-like 1D phosphorized Co supported by Ni foam electrocatalysts for overall water splitting

Cited by 4 publications

References 33 publications

Efficient Electrocatalytic Overall Water Splitting on a Copper-Rich Alloy: An Electrochemical Study

Efficient Electrocatalytic Overall Water Splitting on a Copper-Rich Alloy: An Electrochemical Study

Novel High-Entropy FeCoNiMoZn-Layered Hydroxide as an Efficient Electrocatalyst for the Oxygen Evolution Reaction

2D MXene nanocomposites: electrochemical and biomedical applications

Contact Info

Product

Resources

About