CuS nanoparticles: An efficient electrocatalyst for hydrogen evolution reaction in a wide pH range

Patel, Meswa; Joshi, Kinjal K.; Modi, Krishna H.; Pataniya, Pratik M.; Siraj, Sohel; Sahatiya, Parikshit; Sumesh, C.K.

doi:10.1016/j.electacta.2022.141740

Cited by 37 publications

(6 citation statements)

References 43 publications

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“…In Figure h, the active side of the electrode is represented by * and H* for hydrogen adsorption. In an acidic medium, H + was already present and it will combine with the electrode’s active side to generate H*. , Another interaction between H* and the electrode led to the formation of H 2 H + + e − + Mn ‐ Ni 3 Se 2 * → H * false( 120 .25em mV .25em dec − 1 : .25em Volmer .25em reaction false) H * + H * → H 2 .25em false( 30 .25em mV .25em dec − 1 : .25em Tafel .25em reaction false) H + + e − + H * → H 2 normalO + H 2 .25em false( 40 .25em mV .25em dec − 1 : .25em Heyrovsky .25em reaction false) …”

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

“…In an acidic medium, H + was already present and it will combine with the electrode's active side to generate H*. 45,46 Another interaction between H* and the electrode led to the formation of H The Nyquist spectra (EIS) exhibited sluggish charge transfer (R ct = 27.4 Ω cm 2 ) for Ni 3 Se 2 @NF with a high series resistance (R s = 0.4 Ω cm 2 ), which could be reduced by Mn doping (Figure 3c). The ohmic resistance of the working electrode, connecting wires, and electrolyte reflects the series resistance R s , and R ct represents charge transfer resistance, which is connected with the electron transfer between the working electrode and electrolyte.…”

Section: Hydrogen Evolution Reaction In Acidic Electrolytementioning

confidence: 99%

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Self-Supported Mn-Ni₃Se₂ Electrocatalysts for Water and Urea Electrolysis for Energy-Saving Hydrogen Production

Shah,

Modi,

Pataniya

et al. 2024

ACS Appl. Mater. Interfaces

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Recently, there has been a huge research interest in developing robust, efficient, low-cost, and earth-abundant materials for water and urea electrolysis for hydrogen (H2) generation. Herein, we demonstrate the facile hydrothermal synthesis of self-supported Mn-Ni3Se2 on Ni foam for overall water splitting under wide pH conditions. With the optimized concentration of Mn in Ni3Se2, the overpotential for hydrogen evolution, oxygen evolution, and urea oxidation is significantly reduced by an enhanced electrochemical active surface area. Different electronic states of metal elements also produce a synergistic effect, which accelerates the rate of electrochemical reaction for water and urea electrolysis. Owing to the chemical robustness, Mn-doped Ni3Se2 shows excellent stability for long time duration, which is important for its practical applications. A two-electrode electrolyzer exhibits low cell voltages of 2.02 and 1.77 V for water and urea electrolysis, respectively, to generate a current density of 100 mA/cm2. Finally, the prepared nanostructured Mn-Ni3Se2@NF acts as an electrocatalyst for overall water splitting under wide pH conditions and urea electrolysis for energy-saving hydrogen production and wastewater treatment.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Hydrogen Evolution Reaction In Acidic Electrolytementioning

confidence: 99%

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Self-Supported Mn-Ni₃Se₂ Electrocatalysts for Water and Urea Electrolysis for Energy-Saving Hydrogen Production

Shah,

Modi,

Pataniya

et al. 2024

ACS Appl. Mater. Interfaces

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“…6,7 While precious metals, especially platinum-based electrocatalytic materials, have demonstrated exceptional catalytic activity, their limited availability in nature and high costs have severely restricted their widespread adoption. 8,9 Therefore, there is a critical need to develop cost-effective and efficient hydrogen evolution catalysts. 10,11…”

Section: Introductionmentioning

confidence: 99%

“…6,7 While precious metals, especially platinumbased electrocatalytic materials, have demonstrated exceptional catalytic activity, their limited availability in nature and high costs have severely restricted their widespread adoption. 8,9 Therefore, there is a critical need to develop cost-effective and efficient hydrogen evolution catalysts. 10,11 Transition metal nitrides (TMNs) belong to the category of ''interstitial compounds'', where small nitrogen atoms occupy interstitial spaces within densely packed transition metals.…”

Section: Introductionmentioning

confidence: 99%

Porous single crystal microcubes of niobium nitride for highly efficient electrocatalysis

Li,

Luo,

Lin

et al. 2024

New J. Chem.

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From Doped Coordination Polymer Precursor to Cobalt‐Doped ZnO Electrocatalyst for Alkaline Hydrogen Evolution Reaction

Lontio Fomekong,

Kammi Yontchoum,

Matemb Ma Ntep

et al. 2023

Adv Energy and Sustain Res

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The large‐scale application of water electrolysis, for clean H2 production, requires the development of eco‐friendly and low‐cost electrocatalysts with high activity for hydrogen evolution reaction (HER) in alkaline media. The excellent alternatives to the benchmark noble metal‐based HER electrocatalyst are transition metal oxides (TMO). Because of the nontoxicity, cost‐effectiveness, availability, and easy electronic structure tuning, zinc oxide (ZnO) is a good TMO candidate. However, ZnO shows poor performance for HER electrocatalysis and therefore has been much less reported. Herein, it is reported that ZnO can be developed as a good HER electrocatalyst in alkaline media through simultaneously proper cobalt loading at the precursor level (coordination polymer) and defects engineering. The optimum amount of cobalt in ZnO shows an overpotential of 385 mV at 10 mA cm−2 (lower than that of ZnO and Co3O4) and a small Tafel slope of 76 mV dec−1. The introduction of cobalt at the precursor level and subsequently in the wurtzite frame of ZnO as revealed by the analyses, allows to considerably lower the bandgap and increasing the number of defects in the structure, thereby boosting the electrocatalytic performance. This work highlights the potential of cheap and environmentally friendly TMO as alternative HER electrocatalysts for large‐scale alkaline water electrolysis.

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CuS nanoparticles: An efficient electrocatalyst for hydrogen evolution reaction in a wide pH range

Cited by 37 publications

References 43 publications

Self-Supported Mn-Ni₃Se₂ Electrocatalysts for Water and Urea Electrolysis for Energy-Saving Hydrogen Production

Self-Supported Mn-Ni₃Se₂ Electrocatalysts for Water and Urea Electrolysis for Energy-Saving Hydrogen Production

Porous single crystal microcubes of niobium nitride for highly efficient electrocatalysis

From Doped Coordination Polymer Precursor to Cobalt‐Doped ZnO Electrocatalyst for Alkaline Hydrogen Evolution Reaction

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CuS nanoparticles: An efficient electrocatalyst for hydrogen evolution reaction in a wide pH range

Cited by 37 publications

References 43 publications

Self-Supported Mn-Ni3Se2 Electrocatalysts for Water and Urea Electrolysis for Energy-Saving Hydrogen Production

Self-Supported Mn-Ni3Se2 Electrocatalysts for Water and Urea Electrolysis for Energy-Saving Hydrogen Production

Porous single crystal microcubes of niobium nitride for highly efficient electrocatalysis

From Doped Coordination Polymer Precursor to Cobalt‐Doped ZnO Electrocatalyst for Alkaline Hydrogen Evolution Reaction

Contact Info

Product

Resources

About

Self-Supported Mn-Ni₃Se₂ Electrocatalysts for Water and Urea Electrolysis for Energy-Saving Hydrogen Production

Self-Supported Mn-Ni₃Se₂ Electrocatalysts for Water and Urea Electrolysis for Energy-Saving Hydrogen Production