Exploration of cobalt(<scp>ii</scp>) modification in a phenanthroline-based conjugated organic polymer towards trifunctional electrocatalysis

Singh, Sugandha; Ghorai, Manas K.; Kar, Kamal K.

doi:10.1039/d3ta04961b

Cited by 2 publications

(1 citation statement)

References 87 publications

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“…According to the previously reported metal-based electrocatalyst, the Ni-doped COP shows comparable catalytic activity (Table S2). − To get deeper insight into the electron transport kinetics, an EIS measurement was performed. Figure c,d shows the Nyquist plots fitted to the equivalence circuit model to determine the charge transfer resistance ( R ct ) of the Ni@COP, 10% Pt/C, COP, Ni(NO 3 ) 2 ·6H 2 O, and CP electrode.…”

Section: Resultsmentioning

confidence: 99%

A Nickel-Doped Two-Dimensional Covalent Organic Polymer (2D-COP) for Electrocatalytic Hydrogen Evolution Reaction

Samal,

Kori,

Jain

et al. 2024

ACS Appl. Energy Mater.

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A special class of porous polymers called two-dimensional covalent organic polymers (2D COPs) are formed by the linkage of covalently organic building components through noncovalent interactions. In this work, we have prepared nickel-doped 2D COP (Ni@COP) from a synthesized COP and used it for the electrochemical hydrogen evolution reaction (HER). Ni@COP has exhibited better HER activity in comparison to Ni(NO 3 ) 2 •6H 2 O and COP. In a solution of 0.5 M H 2 SO 4 , the HER activities are measured. An overpotential of 290 mV and a Tafel slope of 112 mV dec −1 were obtained for Ni@COP. The 112 mV dec −1 value suggests that Ni@COP followed the Volmer−Heyrovsky pathway for the acid-catalyzed HER. The stability and catalytic effectiveness of the materials are solely dependent on COP. It is interesting to note that Ni@ COP functions as a model electrocatalyst when employed as a solid cathodic electrode over the surface of carbon paper electrodes. Ni@COP for the HER exhibits exceptional activity and stability, highlighting its enormous potential for diverse energy transformation applications.

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Section: Resultsmentioning

confidence: 99%

A Nickel-Doped Two-Dimensional Covalent Organic Polymer (2D-COP) for Electrocatalytic Hydrogen Evolution Reaction

Samal,

Kori,

Jain

et al. 2024

ACS Appl. Energy Mater.

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Emerging organic electrode materials for sustainable batteries

Hari Prasad,

Malavika,

Pillai

et al. 2024

NPG Asia Mater

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Organic electrode materials (OEMs) possess low discharge potentials and charge‒discharge rates, making them suitable for use as affordable and eco-friendly rechargeable energy storage systems without needing metals such as lithium or sodium. OEMs can provide a sustainable energy economy by their development into stable and efficient next-generation high-power batteries. Despite the presence of several classes of OEMs, such as conducting polymers, 2D and 3D metal-organic frameworks, organolithium derivatives, 2D covalent organic frameworks, aromatic heterocyclic imides, and viologen derivatives, since their introduction in the 1960s, carbonyl-based molecules have maintained low discharge potentials and stable charging/discharging properties. Nevertheless, several redox-active organic molecules, including carbonyl derivatives, show poor electrochemical stability and ionic mobility in standard battery electrolytes, hampering their commercial use. Therefore, with the increased demand for renewable energy, the synthesis and testing of carbonyl-based OEMs continue to be performed in energy research. This review summarizes recent advances in developing carbonyl-based OEMs and their performance in rechargeable batteries.

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Exploration of cobalt(ii) modification in a phenanthroline-based conjugated organic polymer towards trifunctional electrocatalysis

Abstract: A red-ox active donor-acceptor pair conjugated organic polymer namely, TBB-phen, is synthesized via tetrakis(triphenylphosphine)palladium-catalyzed Sonogashira-coupling and is further meliorated by stabilizing cobalt (II) into the organic polymer; Co@TBB-phen. At room...

Cited by 2 publications

References 87 publications

A Nickel-Doped Two-Dimensional Covalent Organic Polymer (2D-COP) for Electrocatalytic Hydrogen Evolution Reaction

A Nickel-Doped Two-Dimensional Covalent Organic Polymer (2D-COP) for Electrocatalytic Hydrogen Evolution Reaction

Emerging organic electrode materials for sustainable batteries

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