Interfacial boron modification on mesoporous octahedral rhodium shell and its enhanced electrocatalysis for water splitting and oxygen reduction

Wang, Yihui; Guo, Wen; Zhu, Zizheng; Xu, Kai; Zhang, Hongyan; Wei, Wenxian; Xiao, Xin; Liang, Wenjie; He, Maoshuai; Yu, Tingting; Zhang, Dongen; Zhao, Hong; Xu, Xing‐You; Yang, Tao

doi:10.1016/j.cej.2022.134982

Cited by 14 publications

(6 citation statements)

References 59 publications

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“…Thus, the OER often requires overcoming a larger energy obstacle to drive the reaction. Therefore, the key to reducing the cost of hydrogen production and the power consumption for large-scale water splitting is to effectively decrease the overpotential of the OER at the anode [163][164][165][166][167][168] to achieve high-current hydrogen production at low pressure.…”

Section: Oxygen Evolution Reactionmentioning

confidence: 99%

Two-Dimensional Metal–Organic Frameworks and Their Derivative Electrocatalysts for Water Splitting

Shen,

Qian,

Lyu

et al. 2023

Applied Sciences

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The escalating urgency to mitigate climate change and enhance energy security has prompted heightened exploration of hydrogen production via electrocatalysis as a viable alternative to conventional fossil fuels. Among the myriad of electrocatalysts under investigation, two-dimensional (2D) metal–organic frameworks (MOFs) stand out as a particularly appealing option. Their unique properties, including a large active specific surface area, distinctive pore structure, ample metal active sites, ultra-thin thickness, superior ion transport efficiency, fast electron transfer rate, and the ability to control the morphological synthesis, endow these frameworks with exceptional versatility and promising potential for electrocatalytic applications. In this review, we delineate the structural features and advantages of 2D MOFs and their derivatives. We proceed to summarize the latest advancements in the synthesis and utilization of these materials for electrocatalytic hydrogen evolution reactions (HER) and oxygen evolution reactions (OER). Finally, we scrutinize the potential and challenges inherent to 2D MOFs and their derivatives in practical applications, underscoring the imperative for continued research in this captivating field of electrocatalysis.

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Section: Oxygen Evolution Reactionmentioning

confidence: 99%

Two-Dimensional Metal–Organic Frameworks and Their Derivative Electrocatalysts for Water Splitting

Shen,

Qian,

Lyu

et al. 2023

Applied Sciences

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“…Consequently, RhPd-H presented alkaline HER properties with attractive activity and stability. Similarly, ultrafine phosphorus-doped Rh (P-Rh/C) 39 and boronmodified hierarchical Rh-Pt (Rh-Pt-B) 40 electrocatalysts also showed remarkable activities for the alkaline HER.…”

Section: Element Dopingmentioning

confidence: 99%

Design and Performance of Rh Nanocatalysts for Boosted H₂ Generation in Alkaline Media

Guo,

Tong,

Yang

2023

Acc. Mater. Res.

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Metrics & MoreArticle Recommendations CONSPECTUS: Hydrogen generation from electrocatalytic water splitting is widely regarded as an important energy conversion process based on its high compatibility with clean and renewable energy sources. It thus has the potential to help society achieve cleanness and sustainability. For the long-term production of highly purified hydrogen for industrial applications, it is preferred for the hydrogen evolution reaction (HER) to occur under mild working conditions or in alkaline media. However, such practical reaction efficiencies are hindered by additional water dissociation and multistep electron transfer. This stems from the sluggish kinetics of the HER in alkaline media, where the reaction rate is 2 to 3 orders of magnitude lower than in acidic media. Up to now, Pt has been extensively accepted as the symbolic catalyst for HER thanks to its appropriate hydrogen adsorption capability. Unfortunately, its activity is not acceptable due to its poor efficiency for water dissociation in alkaline solutions. In this regard, advanced catalysts that have both high catalytic activity for water dissociation and an appropriate hydrogen adsorption capacity are highly desired. Among the reported Pt-free catalysts for alkaline HER, Rh-based electrocatalysts exhibit obviously enhanced performances. It has been experimentally and theoretically confirmed that the Rh catalyst is located near the top of the Trasatti volcano plot for the HER, indicating its suitable adsorption energy of H* to facilitate the HER. In addition, the Rh catalyst possesses stronger competence for water dissociation than the Pt catalyst, which is a prerequisite for highly effective alkaline HER. In this context, a series of experiments with Rh-based electrocatalysts toward the alkaline HER have been actualized over the past decades. These proposed Rhbased catalysts have displayed impressive performances and promising prospects for hydrogen production. To realize the industrial application of hydrogen generation, Rh-based catalysts still require development, such as with the conceptual design of the catalysts and corresponding advanced synthesis methods. In short, further improvement of the catalytic performances of Rh-based catalysts depends on the development of various regulation strategies.In this Account, we highlight the recent progress and achievements of the regulation strategies for Rh-based catalysts and the corresponding enhancement principle for alkaline HER. We start with an introduction and comparison of the different mechanisms in acidic versus alkaline HER processes, emphasizing the principles of designing highly efficient catalysts toward alkaline HER. On the basis of previously reported studies, we conduct an in-depth discussion about the regulation strategies for Rh-based electrocatalysts and the performance optimization toward alkaline HER. This part is divided into three sections: structural engineering (e.g., size, alloy, and morphology regulation), surface engineering (e.g., element doping, facet ...

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“…The free energy variation versus reaction coordinate plots are approximately reversed for these two reactions: that is, upgoing for the OER and downgoing for the ORR. 86 Orthorhombic RuB 2 was reported to act as an acidic OER catalyst more effectively than RuO 2 , delivering a 10 mA cm −2 current density at a small overpotential of 223 mV. 85 Theoretical calculations suggest that, accompanied by the downshifted ε d , formation energies of all *O-containing intermediates are weakened on RuB 2 compared to those on RuO 2 .…”

Section: Effects Of B-doping On Regulating Pgm Reactivity In Electroc...mentioning

confidence: 99%

“…The electrochemical oxygen evolution reaction (OER) from water oxidation is the reverse process of the ORR, sharing some common oxygenated intermediates, including *O, *OH, and *OOH ( vide supra ). The free energy variation versus reaction coordinate plots are approximately reversed for these two reactions: that is, upgoing for the OER and downgoing for the ORR . Orthorhombic RuB 2 was reported to act as an acidic OER catalyst more effectively than RuO 2 , delivering a 10 mA cm –2 current density at a small overpotential of 223 mV .…”

Section: Effects Of B-doping On Regulating Pgm Reactivity In Electroc...mentioning

confidence: 99%

Boron-Doped Platinum-Group Metals in Electrocatalysis: A Perspective

Qin

Zhang

et al. 2022

ACS Catal.

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Platinum-group metals (PGMs) as a representative class of electrocatalysts play a vital role in contemporary energy conversion and storage, including but not limited to fuel cells, metal-air batteries, and precise electrosynthesis. Metalloid B doping into the interstices of a PGM lattice is an alternative tuning knob and has attracted growing interest in effectively upgrading the reactivity, selectivity, and durability of surface PGM sites toward a multitude of electrocatalytic reactions, since the report on Pd–B-catalyzed formic acid electro-oxidation in 2009. In this Perspective, we present an in-depth overview on the advances of B-doped PGMs for different electrocatalytic application scenarios with an emphasis on the structure-reactivity relationship, showing how binding strengths of key intermediates can be properly tuned with the B-doping level on reactive surfaces. Insights from advanced structural characterizations, operando spectroelectrochemistry, and theoretical simulations on the B-doping effect are provided, together with our viewpoints on the future research and development of efficient B-doped PGMs in electrocatalysis.

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Interfacial boron modification on mesoporous octahedral rhodium shell and its enhanced electrocatalysis for water splitting and oxygen reduction

Cited by 14 publications

References 59 publications

Two-Dimensional Metal–Organic Frameworks and Their Derivative Electrocatalysts for Water Splitting

Two-Dimensional Metal–Organic Frameworks and Their Derivative Electrocatalysts for Water Splitting

Design and Performance of Rh Nanocatalysts for Boosted H₂ Generation in Alkaline Media

Boron-Doped Platinum-Group Metals in Electrocatalysis: A Perspective

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Interfacial boron modification on mesoporous octahedral rhodium shell and its enhanced electrocatalysis for water splitting and oxygen reduction

Cited by 14 publications

References 59 publications

Two-Dimensional Metal–Organic Frameworks and Their Derivative Electrocatalysts for Water Splitting

Two-Dimensional Metal–Organic Frameworks and Their Derivative Electrocatalysts for Water Splitting

Design and Performance of Rh Nanocatalysts for Boosted H2 Generation in Alkaline Media

Boron-Doped Platinum-Group Metals in Electrocatalysis: A Perspective

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Design and Performance of Rh Nanocatalysts for Boosted H₂ Generation in Alkaline Media