Rh particles in N-doped porous carbon materials derived from ZIF-8 as an efficient bifunctional electrocatalyst for the ORR and HER

Sun, Can; Duan, Xinde; Jia, Song; Jin, Yachao; Zhang, Mingdao; Song, Li; Cao, Hui

doi:10.1039/d1ra00484k

Cited by 10 publications

(4 citation statements)

References 29 publications

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“…The electrochemical behavior of the synthesized sRhNPs was similar or superior to those of other Rh-based electrocatalysts reported in the literature (Table SIII). [5][6][7]19,[23][24][25][26][27][28][29] The RhNPs exhibited long-term stability and corrosion resistance in acidic conditions. Additionally, RhNP morphology was influenced by its surface-Rh/Ag ratio.…”

Section: Discussionmentioning

confidence: 98%

Morphology-Controlled Silver-Containing Rhodium Nanoparticles for the Hydrogen Evolution Reaction

Hwang

Shin

Yim

et al. 2022

J. Electrochem. Soc.

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Rh nanoparticles (RhNPs) and Rh-based alloys have attracted significant attention owing to their superior electrocatalytic activity in several energy conversion reactions. Three types of silver-containing RhNPs, namely, nanoshells, nanoframes, and porous nanoplates, have recently been synthesized via inverse directional galvanic replacement. These RhNPs were used here to elucidate the relationship between the morphology of RhNPs and their performance in the hydrogen evolution reaction (HER). The activity of RhNPs in HER was investigated using cyclic voltammetry, linear sweep voltammetry, and electrochemical impedance spectroscopy. X-ray photoelectron spectroscopy and X-ray diffraction data revealed that RhNPs contain different Rh/Ag ratios. All RhNPs showed long-term stability in acidic conditions. In particular, nanoshells RhNPs exhibited better performance in the low overpotential range than those of Pt/C, a commercial Rh electrocatalyst, and other RhNPs. Thus, the morphology and composition of RhNPs can be controlled for efficient electrocatalysis.

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Section: Discussionmentioning

confidence: 98%

Morphology-Controlled Silver-Containing Rhodium Nanoparticles for the Hydrogen Evolution Reaction

Hwang

Shin

Yim

et al. 2022

J. Electrochem. Soc.

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“…As shown in Figure 7, the volcano plot of the HER reaction illustrates the correlation between the free energy of hydrogen binding and the corresponding HER activity of the catalyst. The platinum group metals (Pd [149], Pt [150], Rh [151], and Ir [152]) are positioned near the roof of the volcano and represent the inorganic materials with the best HER properties. The transition metals are positioned to the right of the platinum family metals (such as Ag and Au), which are weakly bonded to hydrogen and difficult to initiate the reaction; the metals located to the left (such as Ni and Co) are more strongly bonded to hydrogen and difficult to release products rapidly.…”

Section: Hydrogen 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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“…Metal-free nitrogen-doped carbons have recently been demonstrated to show superior ORR catalytic activity than commercial Pt/C catalysts, signifying a breakthrough for metal-free, nitrogencontaining catalysts with potential for low-temperature fuel cells and metal-air batteries. 23,24 Graphene leads to a wide range of catalytic applications due to its high length-to-width ratio (aspect ratio) and two-dimensional structure. [25][26][27][28] The heteroatom doping in graphene produces defects at neighboring locations that change the asymmetric spin and charge densities, which facilitates the ORR process.…”

Section: Introductionmentioning

confidence: 99%

Scalable production of reduced graphene oxide via biowaste valorisation: an efficient oxygen reduction reaction towards metal-free electrocatalysis

Shah

Singh²,

Prajongtat

et al. 2023

New J. Chem.

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Rh particles in N-doped porous carbon materials derived from ZIF-8 as an efficient bifunctional electrocatalyst for the ORR and HER

Abstract: ZIF-derived RhNC-900 bifunctional electrocatalysts for the oxygen reduction reaction and hydrogen evolution reaction have been prepared via a simple and scalable method, exhibiting excellent catalytic activity and promising performance.

Cited by 10 publications

References 29 publications

Morphology-Controlled Silver-Containing Rhodium Nanoparticles for the Hydrogen Evolution Reaction

Morphology-Controlled Silver-Containing Rhodium Nanoparticles for the Hydrogen Evolution Reaction

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

Scalable production of reduced graphene oxide via biowaste valorisation: an efficient oxygen reduction reaction towards metal-free electrocatalysis

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