Ligand-free synthesis of noble metal nanocatalysts for electrocatalysis

Lu, Linfang; Li, Yunxia; Zhou, Yuheng; Fang, Baizeng

doi:10.1016/j.cej.2022.138668

Cited by 72 publications

(45 citation statements)

References 167 publications

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“…Hydrogen is a green energy carrier which can be sustainably produced by various strategies such as photocatalysis [ 1 , 2 , 3 , 4 , 5 , 6 ] and electrocatalysis [ 7 , 8 , 9 ]. Amongst the diverse hydrogen production approaches, especially compared with the alkaline water electrolysis [ 10 ], proton exchange membrane (PEM) water electrolysis has the advantages of fast start, high current densities and energy efficiency, and low gas crossover, and is thus considered to be the most promising technology for electrocatalytic hydrogen production [ 11 ].…”

Section: Introductionmentioning

confidence: 99%

Robust Porous TiN Layer for Improved Oxygen Evolution Reaction Performance

et al. 2022

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The poor reversibility and slow reaction kinetics of catalytic materials seriously hinder the industrialization process of proton exchange membrane (PEM) water electrolysis. It is necessary to develop high-performance and low-cost electrocatalysts to reduce the loss of reaction kinetics. In this study, a novel catalyst support featured with porous surface structure and good electronic conductivity was successfully prepared by surface modification via a thermal nitriding method under ammonia atmosphere. The morphology and composition characterization-confirmed that a TiN layer with granular porous structure and internal pore-like defects was established on the Ti sheet. Meanwhile, the conductivity measurements showed that the in-plane electronic conductivity of the as-developed material increased significantly to 120.8 S cm−1. After IrOx was loaded on the prepared TiN-Ti support, better dispersion of the active phase IrOx, lower ohmic resistance, and faster charge transfer resistance were verified, and accordingly, more accessible catalytic active sites on the catalytic interface were developed as revealed by the electrochemical characterizations. Compared with the IrOx/Ti, the as-obtained IrOx/TiN-Ti catalyst demonstrated remarkable electrocatalytic activity (= 302 mV) and superior stability (overpotential degradation rate: 0.067 mV h−1) probably due to the enhanced mass adsorption and transport, good dispersion of the supported active phase IrOx, increased electronic conductivity and improved corrosion resistance provided by the TiN-Ti support.

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Section: Introductionmentioning

confidence: 99%

Robust Porous TiN Layer for Improved Oxygen Evolution Reaction Performance

et al. 2022

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“…12,[14][15][16] At present, Ir and Ru oxides are still the most representative OER electrocatalysts, especially the Ir oxide with more prominent practical potentiality, regrettably, extremely low reserve of Ir element in the earth's crust (0.001 ppm) impedes its widespread application. [17][18][19][20][21] Hence, reducing the Ir consumption without compromising the OER catalytic performance is highly paramount.…”

Section: Introductionmentioning

confidence: 99%

Nanostructured IrO_x supported on N-doped TiO₂ as an efficient electrocatalyst towards acidic oxygen evolution reaction

Jia

Liu

et al. 2022

RSC Adv.

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“…Hydrogen is green energy carrier, which has diverse applications. Green hydrogen can be produced via various technologies, such as electrocatalytic [ 1 , 2 , 3 , 4 , 5 , 6 ] or photocatalytic water splitting [ 7 , 8 , 9 , 10 , 11 , 12 ]. Proton exchange membrane water electrolyzer (PEMWE) is one of the important technologies for hydrogen generation.…”

Section: Introductionmentioning

confidence: 99%

Au-TiO2/Ti Hybrid Coating as a Liquid and Gas Diffusion Layer with Improved Performance and Stability in Proton Exchange Membrane Water Electrolyzer

et al. 2022

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The liquid and gas diffusion layer is a key component of proton exchange membrane water electrolyzer (PEMWE), and its interfacial contact resistance (ICR) and corrosion resistance have a great impact on the performance and durability of PEMWE. In this work, a novel hybrid coating with Au contacts discontinuously embedded in a titanium oxidized layer was constructed on a Ti felt via facile electrochemical metallizing and followed by a pre-oxidization process. The physicochemical characterizations, such as scanning electron microscopy, energy dispersive spectrometer, and X-ray diffraction results confirmed that the distribution and morphology of the Au contacts could be regulated with the electrical pulse time, and a hybrid coating (Au-TiO2/Ti) was eventually achieved after the long-term stability test under anode environment. At the compaction force of 140 N cm−2, the ICR was reduced from 19.7 mΩ cm2 of the P-Ti to 4.2 mΩ cm2 of the Au-TiO2/Ti. The corrosion current density at 1.8 V (RHE) is 0.689 μA cm−2. Both the ICR and corrosion resistance results showed that the prepared protective coating could provide comparable ICR and corrosion resistance to a dense Au coating.

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Ligand-free synthesis of noble metal nanocatalysts for electrocatalysis

Cited by 72 publications

References 167 publications

Robust Porous TiN Layer for Improved Oxygen Evolution Reaction Performance

Robust Porous TiN Layer for Improved Oxygen Evolution Reaction Performance

Nanostructured IrO_x supported on N-doped TiO₂ as an efficient electrocatalyst towards acidic oxygen evolution reaction

Au-TiO2/Ti Hybrid Coating as a Liquid and Gas Diffusion Layer with Improved Performance and Stability in Proton Exchange Membrane Water Electrolyzer

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Ligand-free synthesis of noble metal nanocatalysts for electrocatalysis

Cited by 72 publications

References 167 publications

Robust Porous TiN Layer for Improved Oxygen Evolution Reaction Performance

Robust Porous TiN Layer for Improved Oxygen Evolution Reaction Performance

Nanostructured IrOx supported on N-doped TiO2 as an efficient electrocatalyst towards acidic oxygen evolution reaction

Au-TiO2/Ti Hybrid Coating as a Liquid and Gas Diffusion Layer with Improved Performance and Stability in Proton Exchange Membrane Water Electrolyzer

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Nanostructured IrO_x supported on N-doped TiO₂ as an efficient electrocatalyst towards acidic oxygen evolution reaction