Hydrogen bond-mediated pH-universal electrocatalytic hydrogen production by conjugated porous poly-indigo

Nath, Ipsita; Chakraborty, Jeet; Lips, Reinaud; Dekyvere, Sander; Jiang, Min; Varma, Rajender S.; Verpoort, Francis

doi:10.1039/d2ta08365e

Cited by 7 publications

(2 citation statements)

References 55 publications

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“…The HER performance was attributed to an intrinsic chemical and electronic coupling, which synergistically enhanced the kinetics of proton adsorption and reduction. Furthermore, Verpoort et al 146 reported a conjugated porous poly-indigo (Ind-CPP) polymer, which exhibited a good HER performance with an overpotential of 359 mV ( η 10 ) in an acidic medium and 364 mV ( η 10 ) in an alkaline medium, respectively. Besides, a Tafel slope of 64 mV dec −1 was calculated for Ind-CPP at pH = 0, which increases to 73 mV dec −1 at pH = 14 (Fig.…”

Section: Metal-free Catalysis For the Hermentioning

confidence: 99%

Recent advances in metal-free electrocatalysts for the hydrogen evolution reaction

Cai,

Xu,

Guo

et al. 2024

J. Mater. Chem. A

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Section: Metal-free Catalysis For the Hermentioning

confidence: 99%

Recent advances in metal-free electrocatalysts for the hydrogen evolution reaction

Cai,

Xu,

Guo

et al. 2024

J. Mater. Chem. A

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“…125 Hydrogen, however, is colorless, tasteless and flammable. 126 To ensure reliable utilization of hydrogen, accurate detection of the generation and leakage of hydrogen is necessary. Palladium is a widely used material for hydrogen sensors by dissociative absorption energy.…”

Section: Diverse Energy Applications Of Films With Nanoengineered Sur...mentioning

confidence: 99%

Recent progress in films with nanoengineered surfaces via bubble-induced self-assembly for energy applications

Chu¹,

Fu²,

Wang³

et al. 2023

J. Mater. Chem. A

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Electrochemically Controlled Deposition of Low‐Crystalline Covalent Organic Frameworks on Nanocarbon Electrode Toward Metal‐Free Oxygen Reduction Electrocatalyst

Sato,

Inagi

2024

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Morphology‐controlled synthesis of covalent organic frameworks (COFs) offers significant potential for electrochemical applications. However, controlling the deposition of nanometer‐scale COFs on carbon supports remains challenging due to the need for a slow COF generation rate and the dispersion of carbon supports in liquid‐phase synthesis. In this study, nanometer‐scale COF/carbon composites are fabricated using electrochemically generated acid (EGA) to assist in the formation of imine‐type COFs, which are then deposited onto pre‐cast nanocarbon supports on an electrode. A monomer combination of tri(4‐aminophenyl)‐1,3,5‐triazine and 2,5‐dimethoxybenzene‐1,4‐dicarboxaldehyde is utilized due to their suitable oxidation potentials, with 1,2‐diphenylhydrazine serving as the EGA source. Through proton generation driven by electrolysis conditions, controlled COF formation is achieved at the single nanometer scale, ranging from 6 to 30 nm, on various nanocarbon supports. The COF/carbon electrode is evaluated as an oxygen reduction reaction (ORR) electrocatalyst, demonstrating superior performance compared to other COF‐based electrode materials containing the 1,3,5‐triazine moiety. The findings experimentally validate the efficacy of the EGA‐assisted COF deposition method for nanostructure construction and its ability to enhance the properties of COF‐based electrodes through morphology tuning.

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Hydrogen bond-mediated pH-universal electrocatalytic hydrogen production by conjugated porous poly-indigo

Abstract: High-performing catalysts for hydrogen evolution reaction (HER) via water electrolysis are of great importance for producing carbon-free green fuels. Compared to the routinely used metal-based systems under acidic conditions, metal-free...

Cited by 7 publications

References 55 publications

Recent advances in metal-free electrocatalysts for the hydrogen evolution reaction

Recent advances in metal-free electrocatalysts for the hydrogen evolution reaction

Recent progress in films with nanoengineered surfaces via bubble-induced self-assembly for energy applications

Electrochemically Controlled Deposition of Low‐Crystalline Covalent Organic Frameworks on Nanocarbon Electrode Toward Metal‐Free Oxygen Reduction Electrocatalyst

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