Synthesis and Electrochemical Activity of Carbon-Supported Trimetallic Ir95-xPd5Ptx Nanoparticles as Bifunctional Catalysts for Oxygen Evolution/Reduction Reactions

Geethalakshmi, M.; Ganeshbabu, M.; Kalpana, D.

doi:10.1007/s12678-022-00717-7

Cited by 3 publications

(1 citation statement)

References 26 publications

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“…[ 2 ] In practice, water oxidation, the half reaction of water splitting, demands a highly efficient electrocatalyst due to the mechanism involving sluggish multi‐electron transfer kinetics throughout the process. [ 3 ] Recently, tri‐metallic electrocatalysts (e.g., Ni 60 Fe 30 Mn 10 , [ 4 ] NiFeCr, [ 5 ] Ir 95‐ x Pd 5 Pt x , [ 6 ] Au@RhCu, [ 7 ] etc.) show significantly enhanced OER performances in which the improvement could be induced by synergetic effect of the heterogenous elements in comparison with single‐ and bi‐metallic catalysts.…”

Section: Introductionmentioning

confidence: 99%

Single Phase Trimetallic Spinel CoCr_xRh_2‐_xO₄ Nanofibers for Highly Efficient Oxygen Evolution Reaction under Freshwater Mimicking Seawater Conditions

Jin

Woo

Prabhakaran

et al. 2023

Adv Funct Materials

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Electrochemical water splitting is a promising pathway for sustainable oxygen production in terms of energy conversion. Seawater electrolysis, especially, is a sustainable approach to carbon‐neutral energy conversion without reliance on freshwater; however, extreme corrosion of anodic electrode caused by highly corrosive Cl− is a main challenge of seawater oxidation. To address this issue, herein, nanofibers of trimetallic spinel CoCrxRh2‐xO4 with various composition ratios are prepared for highly sustained water oxidation electrocatalysis. Among a series of CoCrxRh2‐xO4, CoCr0.7Rh1.3O4 nanofibers exhibit excellent electrocatalytic activity for oxygen evolution reaction (OER): the highest mass activity, the lowest overpotential at 10 mA cm−2 and the smallest Tafel slope with robust long‐term stability under alkaline electrolyte. In addition, CoCr0.7Rh1.3O4 nanofibers deliver better OER performances in simulated seawater than a commercial benchmark catalyst (IrO2 nanoparticles), demonstrating that feasibility of alkaline seawater electrolysis with CoCr0.7Rh1.3O4 nanofibers as an OER electrocatalyst.

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Section: Introductionmentioning

confidence: 99%

Single Phase Trimetallic Spinel CoCr_xRh_2‐_xO₄ Nanofibers for Highly Efficient Oxygen Evolution Reaction under Freshwater Mimicking Seawater Conditions

Jin

Woo

Prabhakaran

et al. 2023

Adv Funct Materials

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Bifunctional Electrocatalysts for Unitized Regenerative Fuel Cells

Gupta,

Mondal

2024

Multi-Functional Electrocatalysts

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During the transition from conventional energy sources to sustainable alternatives, the role of energy storage and conversion is pivotal. Unitized regenerative fuel cells (URFCs) have attracted significant attention as promising energy storage and conversion devices owing to their ability to operate in both fuel cell (FC) and electrolyser (EL) modes within a compact single cell. They possess several advantages, including high power density, high specific energy density, light-weight design, low-cost production, high efficiency, long lifespan, and near-zero environmental impact. The development of efficient and durable bifunctional electrocatalysts is essential for the practical implementation and outstanding performance of URFCs. In URFCs, oxygen holds greater significance than hydrogen because its electrochemical reactions at the interface between the electrolyte and the electrode tend to be slow and intricate, primarily due to the pronounced irreversibility of oxygen-related processes. This chapter begins with a brief introduction to various types of FCs, setting the context for the subsequent discussion on URFCs. It provides an overview of bifunctional electrocatalysts in URFCs, highlighting their role in the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER). It also discusses bifunctional oxygen catalysts (BOCs) reported in the literature, along with a brief discussion of bifunctional hydrogen catalysts (BHCs). The chapter systematically summarizes the recent advances, challenges, and prospects related to bifunctional catalysts, which are critical for the performance of URFCs.

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Bifunctional Electrocatalysts

2024

Multi-Functional Electrocatalysts

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Synthesis and Electrochemical Activity of Carbon-Supported Trimetallic Ir95-xPd5Ptx Nanoparticles as Bifunctional Catalysts for Oxygen Evolution/Reduction Reactions

Cited by 3 publications

References 26 publications

Single Phase Trimetallic Spinel CoCr_xRh_2‐_xO₄ Nanofibers for Highly Efficient Oxygen Evolution Reaction under Freshwater Mimicking Seawater Conditions

Single Phase Trimetallic Spinel CoCr_xRh_2‐_xO₄ Nanofibers for Highly Efficient Oxygen Evolution Reaction under Freshwater Mimicking Seawater Conditions

Bifunctional Electrocatalysts for Unitized Regenerative Fuel Cells

Bifunctional Electrocatalysts

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Synthesis and Electrochemical Activity of Carbon-Supported Trimetallic Ir95-xPd5Ptx Nanoparticles as Bifunctional Catalysts for Oxygen Evolution/Reduction Reactions

Cited by 3 publications

References 26 publications

Single Phase Trimetallic Spinel CoCrxRh2‐xO4 Nanofibers for Highly Efficient Oxygen Evolution Reaction under Freshwater Mimicking Seawater Conditions

Single Phase Trimetallic Spinel CoCrxRh2‐xO4 Nanofibers for Highly Efficient Oxygen Evolution Reaction under Freshwater Mimicking Seawater Conditions

Bifunctional Electrocatalysts for Unitized Regenerative Fuel Cells

Bifunctional Electrocatalysts

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Product

Resources

About

Single Phase Trimetallic Spinel CoCr_xRh_2‐_xO₄ Nanofibers for Highly Efficient Oxygen Evolution Reaction under Freshwater Mimicking Seawater Conditions

Single Phase Trimetallic Spinel CoCr_xRh_2‐_xO₄ Nanofibers for Highly Efficient Oxygen Evolution Reaction under Freshwater Mimicking Seawater Conditions