Formation of cobalt phosphide nanodisks as a bifunctional electrocatalyst for enhanced water splitting

Ji, Lvlv; Zheng, Huifang; Wei, Yanying; Fang, Yeting; Du, Jialei; Wang, Tao; Wang, Sheng

doi:10.1039/d0se00054j

Cited by 15 publications

(8 citation statements)

References 30 publications

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“…Please do not adjust margins Please do not adjust margins phase. In addition, the P 2p region shows a broad peak (134.2 eV), which is characteristic of P(V) in cobalt pyrophosphate 37 for 4@600_N 2 . However, for the 1000 °C-pyrolyzed samples, two other additional bands appear, at 130.7 eV and 129.8 eV, corresponding to phosphide ions bonded to Co 2+ .…”

Section: Journal Name Articlementioning

confidence: 95%

Synthesis and electrochemical properties of metal(ii)-carboxyethylphenylphosphinates

et al. 2021

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Section: Journal Name Articlementioning

confidence: 95%

Synthesis and electrochemical properties of metal(ii)-carboxyethylphenylphosphinates

et al. 2021

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“…[24] Moreover, CoP can serve as an effective catalyst for OER. [25] Meanwhile, macropores are formed on the surface of the catalyst, as shown in Figures 2 and 3. In general, large pores can facilitate the mass transport of reactants and products during the electrocatalytic process.…”

Section: Oer Performance Of Manganese-cobalt Oxide Spinelmentioning

confidence: 99%

Facile Route of P‐doped Defect‐rich Manganese‐cobalt Oxide Spinel with Enhanced Oxygen Evolution Reaction Performance

Peng

Wang

2020

ChemNanoMat

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Phosphorus dopants and defects were successfully introduced to a manganese-cobalt oxide (MCO) spinel via plasma treatment in the presence of NaH 2 PO 2. High-energy electrons generated by plasma can produce oxygen vacancy and embed phosphorus into the spinel. To balance the charge of lattice phosphorus, manganese and cobalt atoms left their original sites and deposited as MnO and CoP, thereby forming a disordered structure. Meanwhile, the oxidation state of cobalt increased. These changes provided extra active sites for electrochemical reaction and improved electrical conductivity. In addition, tunnels were formed on the surface, thus favoring mass transport in the electrolyte. Compared with pristine MCO, the spinel doped with phosphorus via plasma treatment showed higher oxygen evolution reaction performance, with a lower onset potential of 1.45 V, higher current density of 25.32 mA cm À 2 at 1.75 V, and smaller Tafel slope of 118.7 mV dec À 1. These findings can facilitate the development of high-activity electrocatalysts with dopants and defects for energy storage and conversion systems.

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“…For the past decade, ex situ characterization of the catalysts before and after the particular electrochemical reaction was considered the most widely recognized technique to identify the possible active species. [53][54][55] Nevertheless, these methods cannot constantly pledge reliable results because of undesired functional groups produced on the surface of the catalysts during chamber-to-chamber transport. Moreover, further notably, the step-by-step mechanism and the presence of any transitory intermediates cannot be detected by ex situ techniques.…”

Section: Introductionmentioning

confidence: 99%

Nanostructured Metal Phosphide Based Catalysts for Electrochemical Water Splitting: A Review

Bodhankar

Sarawade

Kumar

et al. 2022

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132

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Amongst various futuristic renewable energy sources, hydrogen fuel is deemed to be clean and sustainable. Electrochemical water splitting (EWS) is an advanced technology to produce pure hydrogen in a cost‐efficient manner. The electrocatalytic hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) are the vital steps of EWS and have been at the forefront of research over the past decades. The low‐cost nanostructured metal phosphide (MP)‐based electrocatalysts exhibit unconventional physicochemical properties and offer very high turnover frequency (TOF), low over potential, high mass activity with improved efficiency, and long‐term stability. Therefore, they are deemed to be potential electrocatalysts to meet practical challenges for supporting the future hydrogen economy. This review discusses the recent research progress in nanostructured MP‐based catalysts with an emphasis given on in‐depth understanding of catalytic activity and innovative synthetic strategies for MP‐based catalysts through combined experimental (in situ/operando techniques) and theoretical investigations. Finally, the challenges, critical issues, and future outlook in the field of MP‐based catalysts for water electrolysis are addressed.

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Formation of cobalt phosphide nanodisks as a bifunctional electrocatalyst for enhanced water splitting

Abstract: A novel porous disk-like nanostructured CoP shows excellent bifunctional catalytic performances toward overall water splitting.

Cited by 15 publications

References 30 publications

Synthesis and electrochemical properties of metal(ii)-carboxyethylphenylphosphinates

Synthesis and electrochemical properties of metal(ii)-carboxyethylphenylphosphinates

Facile Route of P‐doped Defect‐rich Manganese‐cobalt Oxide Spinel with Enhanced Oxygen Evolution Reaction Performance

Nanostructured Metal Phosphide Based Catalysts for Electrochemical Water Splitting: A Review

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