S, N co-doped carbon nanotube-encapsulated core-shelled CoS2@Co nanoparticles: efficient and stable bifunctional catalysts for overall water splitting

Wang, Jingyu; Ouyang, Ting; Li, Nan; Ma, Tianyi; Liu, Zhao‐Qing

doi:10.1016/j.scib.2018.07.008

Cited by 212 publications

(75 citation statements)

References 62 publications

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“…However, the search for alternative catalyst that could drive this reaction to the commercial market is on‐going. In general the optimal OER catalysts must possess merits such as low cost, high catalytic activity, adequate stability and wide availability . As portrayed in Eq.…”

Section: Electro‐catalysts For Oxygen Evolution Reaction (Oer)mentioning

confidence: 99%

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Recent Advances in Non‐Precious Metal‐Based Electrodes for Alkaline Water Electrolysis

Zhou

et al. 2020

ChemNanoMat

107

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Hydrogen gas has been regarded as an ideal energy source that could replace the need of fossil fuels, based on its high energy density with zero carbon emissions. The production of hydrogen via electrolysis of water is not a new field, but the technology has seen significant advancements in recent times, owing to the proportional growing demand of clean and affordable energy. This review discusses the most recent progresses achieved in the area of earth abundant catalysis, particularly, non‐precious metal (Ni, Co, Fe, Mo, W)‐based catalysts that are being utilized for the electrochemical hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) in alkaline solutions. Based on the type of materials, the discussions are categorized into sections attributed to transition metal alloys, hydroxides, oxides, chalcogenides, carbides and nitrogenous materials. In general, a brief introduction of HER and OER mechanisms followed by a detailed discussion of the presently considered catalysts with endeavors have been made to highlight the new technologies and alternative approaches that are being considered promising towards production of clean H2 energy. Finally, a prospective has been provided to accentuate the future of non‐noble metal based catalyst in electro‐catalytic water splitting reactions.

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Section: Electro‐catalysts For Oxygen Evolution Reaction (Oer)mentioning

confidence: 99%

“…In general the optimal OER catalysts must possess merits such as low cost, high catalytic activity, adequate stability and wide availability. [55] As portrayed in Eq. (5-6), the active sites of such catalyst must have variable valence state to adsorb oxygen intermediates and form bonds.…”

Section: Electro-catalysts For Oxygen Evolution Reaction (Oer)mentioning

confidence: 99%

Recent Advances in Non‐Precious Metal‐Based Electrodes for Alkaline Water Electrolysis

Zhou

et al. 2020

ChemNanoMat

107

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“…As of now the superlative materials which shows the highest activity are the noble metals like Pt, Ir, and Ru based materials but these lacks supremacy because of less abundance and more cost . Consequently, alternative catalysts which are effective in terms of cost and efficiency is required for both the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) . For more than decades, a range of transition metal based electrocatalysts have been synthesized which efficiently catalyze both HER and/or OER .…”

Section: Introductionmentioning

confidence: 99%

Highly Active Ternary Nickel–Iron oxide as Bifunctional Catalyst for Electrochemical Water Splitting

et al. 2019

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The development of noble metal free, robust catalyst is highly sought for commercialization of clean, renewable energy technology and to replace the fossil fuel‐based energy equipments. Herein, we report a highly efficient and stable ternary Nickel Iron oxide (NiFe2O4) electrocatalyst for bifunctional oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) in alkaline medium. The as‐synthesized NiFe2O4 has been confirmed by techniques like FESEM, HR‐TEM, powder X‐ray diffraction (XRD), and X‐ray photoelectron spectra analysis. NiFe2O4 demonstrate nanoparticle morphology with an average size of ∼10 nm. The synthesized NiFe2O4 electrocatalyst exhibit superior electrocatalytic efficiency for OER, and achieves a current density of 10 mA cm−2 at an overpotential of 290 mV, with smaller Tafel slope of 42 mV/dec. A stable performance of OER is obtained at 10 mA cm−2 for more than 8 h. The electrocatalytic activity of NiFe2O4 is comparable with benchmark electrocatalyst IrO2/C. Similarly, NiFe2O4 also shows superior HER activity in 1 M KOH. The enhanced bi‐functional activity of NiFe2O4 is thought to be the synergy between the multicomponent structure of NiFe2O4, high surface area, and stability leading to high electrical conductivity.

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“…The big size hides most active edge and corner sites, which are coordinating unsaturated and considered to be highly reactive . Reducing thickness and size of LDH materials to dozens of nanometers in size would enhance the electrocatalytical performance . However, further decreasing thickness to 5 nm is still challenging.…”

Section: Figurementioning

confidence: 99%

Ultra‐thin Co−Fe Layered Double Hydroxide Hollow Nanocubes for Efficient Electrocatalytic Water Oxidation

et al. 2019

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S, N co-doped carbon nanotube-encapsulated core-shelled CoS2@Co nanoparticles: efficient and stable bifunctional catalysts for overall water splitting

Cited by 212 publications

References 62 publications

Recent Advances in Non‐Precious Metal‐Based Electrodes for Alkaline Water Electrolysis

Recent Advances in Non‐Precious Metal‐Based Electrodes for Alkaline Water Electrolysis

Highly Active Ternary Nickel–Iron oxide as Bifunctional Catalyst for Electrochemical Water Splitting

Ultra‐thin Co−Fe Layered Double Hydroxide Hollow Nanocubes for Efficient Electrocatalytic Water Oxidation

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