Controllable synthesis of Mo O linkage enhanced CoP ultrathin nanosheet arrays for efficient overall water splitting

Tao, Katsumi; Dan, Huamei; Hai, Yang; Liu, Li; Gong, Yun

doi:10.1016/j.apsusc.2019.07.118

Cited by 12 publications

(6 citation statements)

References 47 publications

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“…Currently, transition-metal phosphides (TMPs), − sulfides, , nitrides, , selenides, , (oxy)hydroxides, , and carbides , have been synthesized as HER or OER catalysts. Cobalt phosphide (CoP) is an excellent catalyst, which as an integral part of TMPs, can be used to improve the defects of Ru- and Ir-based electrocatalysts.…”

Section: Introductionmentioning

confidence: 99%

Influence of Nitrogen-Doped Carbon Quantum Dots on the Electrocatalytic Performance of the CoP Nanoflower Catalyst for OER

Wang

Bai

et al. 2022

Langmuir

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Cobalt phosphides modified by nitrogen-doped carbon quantum dots (CoP−NCQDs) were successfully constructed by a facile and low-cost hydrothermal treatment, which is expected to replace traditional noble-metal oxygen evolution reaction electrode materials. Detailed experiments and findings show that nitrogen-doped carbon quantum dots (NCQDs) have a significant impact on the morphology of the CoP catalyst, and nitrogen doping can regulate the surface-active sites to obtain the catalyst with abundant structural defects. Simultaneously, nitrogen doping can regulate the content of pyridinic N and pyrrolic N, which exerts positive effects on the formation of the bond structure and electron conduction between NCQDs and CoP.

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Section: Introductionmentioning

confidence: 99%

Influence of Nitrogen-Doped Carbon Quantum Dots on the Electrocatalytic Performance of the CoP Nanoflower Catalyst for OER

Wang

Bai

et al. 2022

Langmuir

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“…The peaks appearing at 780.89 eV for Co 2p 3/2 and at 796.60 eV for Co 2p 1/2 could be attributed to Co 2+ species. 32,33 As depicted in Fig. 3b, the P 2p spectrum exhibits peaks at 129.61 eV and 130.21 eV, reflecting the binding energies of P 2p 3/2 and P 2p 1/2 boned to Co element in Co−P coating.…”

Section: Resultsmentioning

confidence: 94%

Electrodeposited Ni−Co−P Triple-Layered Structure as A Robust and Durable Electrocatalyst for Hydrogen Evolution

Chen,

Li,

et al. 2023

J. Electrochem. Soc.

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Designing earth-abundant, cost-effective catalysts for hydrogen evolution via water splitting is essential for hydrogen generation. Adding a third metal element to binary phosphides provides the opportunity to tune their morphology and their crystalline and electronic structures and thus their electrocatalytic properties. In this study, a hierarchical crystalline/amorphous Ni−Co−P compound is prepared on nickel foam (NF) with different nickel to cobalt ratio by one-step electrodepositing technique. The Ni−Co−P/NF is composed of metallic Co and amorphous phosphides. It has hierarchical morphology, consisting of ~800 nm spherical particles in the bottom layer, ~1.5 μm spherical particles in the middle layer, and staggered network structure on the top layer. The Ni−Co−P/NF electrode exhibits superior hydrogen evolution reaction catalytic activity in the alkaline solution, which requires only 72 mV for delivering 10 mA cm−2. More importantly, the Ni−Co−P/NF catalyst sustains the current density of 20 mAcm−2 for 53 h with negligible degradation in overpotential which shows remarkable electrochemical stability.

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“…47−49 The core XPS spectra for Mo 3d in both cases can be observed in the +6 oxidation state. 50,51 In the case of V, the highresolution XPS spectra for V 2p indicate the presence of V 5+ only, indicating the complete transformation of V 4+ into V 5+ during the seawater oxidation process. 52,53 The high-resolution XPS for Fe 2p displays an increase of the Fe 3+ /Fe 2+ ratio from 0.873 to 1.04 after the stability test due to partial oxidation during the electrochemical oxidation process, which is considered to be a common phenomenon and mostly beneficial in the electrooxidation process.…”

Section: Seawater Oxidationmentioning

confidence: 99%

High-Entropy Borate as an Active Electrocatalyst for Boosted Alkaline Seawater Oxidation

Ahmed,

Khatun,

Bhattacharjee

et al. 2024

ACS Appl. Energy Mater.

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Developing efficient and stable electrocatalysts for seawater oxidation at high current density still remains challenging due to chlorine evolution reaction at the anode. Herein, we report the facile synthesis of amorphous high-entropy borate by the chemical reduction method and identify it as a very active and robust electrocatalyst for freshwater oxidation as well as seawater oxidation. The developed high-entropy borate needs only 275 and 288 mV overpotentials in 1 M KOH and 1 M KOH + seawater, respectively, to achieve a high current density of 100 mA cm −2 and exhibits outstanding stability at such a high current density for over 50 h in alkaline real seawater.

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Controllable synthesis of Mo O linkage enhanced CoP ultrathin nanosheet arrays for efficient overall water splitting

Cited by 12 publications

References 47 publications

Influence of Nitrogen-Doped Carbon Quantum Dots on the Electrocatalytic Performance of the CoP Nanoflower Catalyst for OER

Influence of Nitrogen-Doped Carbon Quantum Dots on the Electrocatalytic Performance of the CoP Nanoflower Catalyst for OER

Electrodeposited Ni−Co−P Triple-Layered Structure as A Robust and Durable Electrocatalyst for Hydrogen Evolution

High-Entropy Borate as an Active Electrocatalyst for Boosted Alkaline Seawater Oxidation

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