Vertical Graphene-Supported NiMo Nanoparticles as Efficient Electrocatalysts for Hydrogen Evolution Reaction under Alkaline Conditions

Wang, Hongbin; Ye, Beirong; Li, Chen; Tang, Tao; Li, Sipu; Shi, San-Qiang; Wu, Chunyang; Zhang, Yongqi

doi:10.3390/ma16083171

Cited by 5 publications

(1 citation statement)

References 55 publications

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“…The highest current is reported for Ni-Mo electrocatalysts with Cu-based support material, followed by Ni and Ti-based ones [47]. A study on vertical graphene-supported Ni-Mo electrodes showed impressive performance in an alkaline medium with a low HER overpotential of 70.95 mV at 10 mA/cm 2 , superior to the performance of other substratebased Ni-Mo electrodes for the same applications under similar operating conditions [48]. Also, seawater splitting is gaining attention, especially for its abundance, but there exist some challenges like chlorine evolution reaction on the anode, which can dominate over the OER and further corrode the catalyst and the substrate.…”

Section: Computational Models Of Molecular Hydrogen Productionmentioning

confidence: 98%

Predictive Modeling of Molecular Mechanisms in Hydrogen Production and Storage Materials

Banerjee,

Balasubramanian

2023

Materials

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Hydrogen has been widely considered to hold promise for solving challenges associated with the increasing demand for green energy. While many chemical and biochemical processes produce molecular hydrogen as byproducts, electrochemical approaches using water electrolysis are considered to be a predominant method for clean and green hydrogen production. We discuss the current state-of-the-art in molecular hydrogen production and storage and, more significantly, the increasing role of computational modeling in predictively designing and deriving insights for enhancing hydrogen storage efficiency in current and future materials of interest. One of the key takeaways of this review lies in the continued development and implementation of large-scale atomistic simulations to enable the use of designer electrolyzer–electrocatalysts operating under targeted thermophysical conditions for increasing green hydrogen production and improving hydrogen storage in advanced materials, with limited tradeoffs for storage efficiency.

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Section: Computational Models Of Molecular Hydrogen Productionmentioning

confidence: 98%

Predictive Modeling of Molecular Mechanisms in Hydrogen Production and Storage Materials

Banerjee,

Balasubramanian

2023

Materials

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Nickel and Molybdenum Composites Decorated Nitrogen‐Doped Carbon Catalysts from Spent Coffee Grounds for Alkaline Hydrogen Evolution

Ge,

Zhang,

Meng

et al. 2024

ChemPlusChem

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Biomass‐derived materials can help develop efficient, environmentally friendly and cost‐effective catalysts, thereby improving the sustainability of hydrogen production. Herein, we propose a simple method to produce nickel and molybdenum composites decorated spent coffee grounds (SCG) as an efficient catalyst, SCG(200)@NiMo, for electrocatalytic hydrogen production. The porous carbon supporter derived form SCG provided a larger surface, prevented aggregation during the high temperature pyrolysis, optimized the electronic structure by N and provided a reducing atmosphere for the oxides reduction to form heterojunctions. The sieved SCG showed obvious improvement of HER performance and enhanced conductivity and long‐term durability. The obtained SCG(200)@NiMo exhibits the highest electrochemical performance for the hydrogen evolution reaction process, as evidenced by the overpotential of only 127 mV at a current density of ɳ10 and 97.7% catalytic activity retention even after 12 h of operation. This work may stimulate further exploration of efficient electrocatalysts derived from biomass.

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Graphene‐Transition Metal Electrocatalysts for Sustainable Water Electrolysis

Tripathi,

Verma,

Sinha

et al. 2024

ChemistrySelect

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Transition metal compounds (TMCs) are potentially fruitful substitutes for noble metals for electrocatalytic splitting of water due to their intrinsic electrocatalytic activity, modifiable morphology, tunable electronic structure and their earth‐abundance. The combination of TMCs with graphene improves the dispersion of loaded catalysts, providing more catalytic active sites, enhancing the conductivity of hybrids, affording accelerated charge‐transfer kinetics, and minimizing catalyst bleaching, aggregation, and sintering under harsh reaction conditions. Additionally, graphene incorporation into TMCs modulates the electronic structure of active centers because of the synergistic interaction between them, thereby improving their catalytic performance. This review paper focuses on the recent progress made in designing different graphene‐transition metal‐based materials that can be used in the hydrogen evolution reaction (HER), the oxygen evolution reaction (OER), and overall water splitting (OWS). In‐situ characterization methodologies and DFT calculations that facilitate catalyst development are discussed elaborately. Finally, the advancements made in the development of graphene‐supported transition metal compounds for use in a functional water electrolyzer have been explored. In conclusion, a few specific recommendations have been made about the current challenges related to the widespread production of effective HER/OER electrocatalysts for water electrolysis.

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Vertical Graphene-Supported NiMo Nanoparticles as Efficient Electrocatalysts for Hydrogen Evolution Reaction under Alkaline Conditions

Cited by 5 publications

References 55 publications

Predictive Modeling of Molecular Mechanisms in Hydrogen Production and Storage Materials

Predictive Modeling of Molecular Mechanisms in Hydrogen Production and Storage Materials

Nickel and Molybdenum Composites Decorated Nitrogen‐Doped Carbon Catalysts from Spent Coffee Grounds for Alkaline Hydrogen Evolution

Graphene‐Transition Metal Electrocatalysts for Sustainable Water Electrolysis

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