Enhancing oxygen evolution reactions in nanoporous high-entropy catalysts using boron and phosphorus additives

Cai, Ze-Xing; Bolar, Saikat; Ito, Yoshikazu; Fujita, Takeshi

doi:10.1039/d3nr06065a

Cited by 8 publications

(2 citation statements)

References 44 publications

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“…Nanoporous metals are generally considered to be a type of porous metal with nanosized ligaments and pores as well as open-cell structures, and have been applied in various fields, such as catalysis [ 1 ], batteries [ 2 , 3 ], and sensing [ 4 , 5 ]. In recent years, with the development of electronic components in the direction of smaller size, higher performance, and lower energy consumption, traditional chip interconnection technology has been severely challenged, and electronic packaging researchers have begun to use nanoporous metal as a new interconnection materials.…”

Section: Introductionmentioning

confidence: 99%

A Study of Electroplated Nanoporous Copper Using Aberration-Corrected Transmission Electron Microscopy

Wang,

et al. 2024

Nanomaterials

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Nanoporous Cu foam is widely applied in many fields such as the packaging of electronic power devices. In this study, a sandwich-structured Cu-Zn eutectic alloy precursor composed of Cu0.53Zn0.47/Cu5Zn8/Cu0.53Zn0.47 is prepared through electroplating. The surface layer of the precursor, Cu0.53Zn0.47, has a flat surface with numerous grain boundaries, which effectively promotes its dealloying behavior. By contrast, Cu5Zn8 has a porous structure, which promotes the dealloying behavior at the center of the precursor. The dealloying of Cu0.53Zn0.47 is dominated by the coherent surface diffusion of Cu atoms, and the crystal lattice and orientation show no changes before and after dealloying. By contrast, the dealloying behavior of Cu5Zn8 requires the renucleation of Cu crystals; in this process, Cu atoms are transported to the surface of the layer by capillary forces to form clusters, which nucleate and grow.

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Section: Introductionmentioning

confidence: 99%

A Study of Electroplated Nanoporous Copper Using Aberration-Corrected Transmission Electron Microscopy

Wang,

et al. 2024

Nanomaterials

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“…There is an energy barrier (overpotential) for the decomposition of splitting water that depends on the electrocatalytic materials. However, high-performance hydrogen evolution reaction (HER) electrocatalysts rely on precious metals like Pt, Rh, Pd, and Ir. , The limited reserves, high costs, and poor stability of precious materials severely constrain application in future sustainable energy systems. − Therefore, the development of new and efficient non-precious-metal electrocatalysts has become a critical research focus in recent years.…”

Section: Introductionmentioning

confidence: 99%

Hollow Porous CoP–Carbon Nanocages for Hydrogen Evolution Reactions

Wang,

Niu,

Zheng

et al. 2024

ACS Appl. Nano Mater.

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Hollow porous nanocage structures with unique 3D configurations have a wide range of applications in various fields. In this work, we present a convenient and efficient method for synthesizing nitrogen and sulfur codoped CoP–carbon hollow porous nanocages by utilizing metal-organic framework compounds in combination with acid etching and phosphating. Etching time and phosphatization temperature will regulate the morphology of hollow porous CoP–carbon nanocages, which, in turn, will affect the electrocatalytic performance of the hydrogen evolution reaction (HER). The extensive specific surface area and efficient atom utilization of hollow porous nanocages can accelerate the progress of the reactions and the precipitation of active components. The prepared N, S-codoped CoP–carbon nanocage demonstrates excellent HER performance, exhibiting a lower overpotential of 137 mV at a current density of 10 mA cm–2 in 1.0 M KOH. This performance surpasses that of most reported MOF-derived heteroatom-doped CoP–carbon matrices. Importantly, this work offers a straightforward and promising approach to achieving N, S-codoped hollow porous nanocages, thereby advancing the development of highly efficient electrocatalysts for HER.

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Carbon nanofiber catalysts containing high-entropy metal phosphides with low-content Ru for highly efficient hydrogen evolution reaction

Wang,

Zheng,

et al. 2024

Rare Met.

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Enhancing oxygen evolution reactions in nanoporous high-entropy catalysts using boron and phosphorus additives

Abstract: High-entropy alloy (HEA) catalysts are a novel area of research in catalysis that shows great potential for more efficient catalyst development. Recent studies have highlighted the promise of HEA catalysts...

Cited by 8 publications

References 44 publications

A Study of Electroplated Nanoporous Copper Using Aberration-Corrected Transmission Electron Microscopy

A Study of Electroplated Nanoporous Copper Using Aberration-Corrected Transmission Electron Microscopy

Hollow Porous CoP–Carbon Nanocages for Hydrogen Evolution Reactions

Carbon nanofiber catalysts containing high-entropy metal phosphides with low-content Ru for highly efficient hydrogen evolution reaction

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