Ir-based bifunctional electrocatalysts for overall water splitting

Chen, Lin-Wei; Liang, Hai‐Wei

doi:10.1039/d1cy00650a

Cited by 73 publications

(40 citation statements)

References 111 publications

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“…The OER and the ORR, which are the subjects of our review work, are two separate types of reactions that these bifunctional catalysts catalyze. 74…”

Section: Mof As a Bifunctional Electrocatalystmentioning

confidence: 99%

A review on development of metal–organic framework-derived bifunctional electrocatalysts for oxygen electrodes in metal–air batteries

et al. 2023

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“…The OER and the ORR, which are the subjects of our review work, are two separate types of reactions that these bifunctional catalysts catalyze. 74…”

Section: Mof As a Bifunctional Electrocatalystmentioning

confidence: 99%

A review on development of metal–organic framework-derived bifunctional electrocatalysts for oxygen electrodes in metal–air batteries

et al. 2023

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“…Ir is located next to Pt on the volcano diagram, which is an excellent option for acidic HER catalysts. Two-dimensional nanosheets have a high specific surface area and anisotropy, which expose more active sites and generate more defects on the surface, resulting in an abundance of nucleation sites for the development of metals and distinct benefits in the HER process [ 119 , 120 ]. According to Dai’s research, Iridium nanoparticles (Ir NPs) were spontaneously deposited on a 2D siloxane substrate.…”

Section: Progress In Catalysts For the Hermentioning

confidence: 99%

Recent Advances Regarding Precious Metal-Based Electrocatalysts for Acidic Water Splitting

Peng¹,

Liao

Ye³

et al. 2022

Nanomaterials

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Electrochemical water splitting has wide applicability in preparing high-density green energy. The Proton exchange membrane (PEM) water electrolysis system is a promising technique for the generation of hydrogen due to its high electrolytic efficiency, safety and reliability, compactness, and quick response to renewable energy sources. However, the instability of catalysts for electrochemical water splitting under operating conditions limits their practical applications. Until now, only precious metal-based materials have met the requirements for rigorous long-term stability and high catalytic activity under acid conditions. In this review, the recent progress made in this regard is presented and analyzed to clarify the role of precious metals in the promotion of the electrolytic decomposition of water. Reducing precious metal loading, enhancing catalytic activity, and improving catalytic lifetime are crucial directions for developing a new generation of PEM water electrolysis catalysts. A summary of the synthesis of high-performance catalysts based on precious metals and an analysis of the factors affecting catalytic performance were derived from a recent investigation. Finally, we present the remaining challenges and future perspectives as guidelines for practical use.

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“…The only difference is in the first step, where in acidic media, H 2 O is the specie that is adsorbed on the metal surface, while in alkaline media, OH À is the first specie that is adsorbed on the surface of the metal as exposed in the equation (vi) and (xi). The detailed reaction mechanisms of the OER in acidic and basic media are indicated in the following equations (vi-xv) [88][89][90][91][92] Acidic Media…”

Section: Oer Mechanismmentioning

confidence: 99%

Recent Advancement in Metal‐Organic Framework for Water Electrolysis: A Review

2022

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An alternative to fossil fuel is essential to overcome energy shortages and resolve the environmental problem. Hydrogen production via earth-abundant water resources is a clean, sustainable, and energy-rich fuel source. For the water splitting process, the catalyst is an essential need to enhance the kinetics of the overall reaction. Therefore, noble metals are used as the state-of-the-art catalyst for the OER and HER process due to their remarkable efficiency and stability. But, their high cost and inadequacy are the main obstructs to their commercialization. To commercialize the process, researchers are trying to replace the expensive noble catalyst with a non-noble stable, conductive, and more productive catalyst. In recent decades, transition metal based metal organic framework (MOF) has been extensively used as an electro-catalyst to enhance the kinetics of the OER and HER process. MOF as an electro-catalyst is a promising candidate to improve the rate of water splitting reaction due to their inherent properties such as high surface area, tunable morphology, and high porosity. In this review, the significant data of recent years are assembled for the water splitting process by using the MOFs as an electro-catalyst. This review not only captures the advancement in MOF materials with the effective approach of designing but also indicates the catalyst evaluation parameters and detailed mechanism of the HER and the OER process. Meanwhile, challenges and future prospectus of the MOF based catalyst for the water splitting process are also described here. Hopefully, this review article will help to develop a more productive MOF for the generation of green and sustainable hydrogen.

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Ir-based bifunctional electrocatalysts for overall water splitting

Abstract: High-purity hydrogen production by electrocatalytic overall water splitting plays an important role in energy conversion and storage. The development of high-performance bifunctional electrocatalysts that could simultaneously catalyze the cathodic hydrogen...

Cited by 73 publications

References 111 publications

A review on development of metal–organic framework-derived bifunctional electrocatalysts for oxygen electrodes in metal–air batteries

A review on development of metal–organic framework-derived bifunctional electrocatalysts for oxygen electrodes in metal–air batteries

Recent Advances Regarding Precious Metal-Based Electrocatalysts for Acidic Water Splitting

Recent Advancement in Metal‐Organic Framework for Water Electrolysis: A Review

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