Enhanced Electrocatalytic Performance of Pt Nanoparticles Incorporated CeO2 Nanorods on Polyaniline-Chitosan Support for Methanol Electrooxidation (Experimental and Statistical Analysis)

Ekrami‐Kakhki, Mehri‐Saddat; Pouyamanesh, Soudabeh; Abbasi, Saeed; Heidari, G.; Beitollahi, Hadi

doi:10.1007/s10876-020-01795-7

Cited by 9 publications

(4 citation statements)

References 76 publications

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“…The cations of CeO 2 with fluorite-type structures are able to switch between þ3 and þ4 oxidation states, which can provide a large amount of oxygen-containing species and can be used for the oxidation of CO and other methanol oxidation intermediate products to improve the catalytic activity. [105][106][107][108] Feng et al prepared three kinds of CeO 2 nanocrystals with different morphologies as catalyst carriers, including nano-octahedron, nanosphere, and nanocube, and studied the activity of Pt-supported CeO 2 catalysts with different morphology on MOR. The different morphologies expose different crystalline surfaces, which affect the properties such as oxygen vacancy formation and gas adsorption.…”

Section: Metal Oxidesmentioning

confidence: 99%

Review and Development of Anode Electrocatalyst Carriers for Direct Methanol Fuel Cell

Chen

Sun

et al. 2022

Energy Tech

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Direct methanol fuel cell (DMFC) can be used as a promising portable power device due to its excellent energy conversion efficiency and low pollutant emissions. The performance of DMFC largely depends on the anode electrocatalyst for methanol oxidation reaction (MOR). As an important part of the electrocatalyst, the carrier greatly affects the activity and stability of the electrocatalyst. Herein, the research progress of carbonaceous carriers (such as activated carbon, nanostructured carbon), noncarbonaceous carriers (metal compounds), and conducting polymers in DMFC is reviewed. Furthermore, an overview of the development of self‐supporting carriers for flexible DMFC electronics is presented. Its role as the most ideal DMFC carrier in the future provides new ideas for the challenges and development of the commercialization of flexible DMFC.

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Section: Metal Oxidesmentioning

confidence: 99%

Review and Development of Anode Electrocatalyst Carriers for Direct Methanol Fuel Cell

Chen

Sun

et al. 2022

Energy Tech

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“…The development of electrocatalysts with desirable properties, i.e., high activity and selectivity, low cost, and long lifetime, is the key to enabling the practical applications of electrocatalytic processes, while electrodes dominate the capital cost for an electrochemical oxyanion removal process . The electrocatalytic properties of metal nanoparticles (NPs) have been utilized in various applications, such as hydrogen evolution, oxygen evolution, fuel cells, − and carbon dioxide reduction . However, the development of high-performance metal-based electrocatalysts, especially bimetallic and trimetallic electrocatalysts, is generally time-consuming via a trial-and-error process.…”

Section: Introductionmentioning

confidence: 99%

Integrated Electrocatalyst Platform for Electroreduction of Oxyanions in Water

Ma,

Qian,

Wang

et al. 2024

ACS Appl. Energy Mater.

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Electrocatalysis offers a promising solution to remove harmful oxyanions from wastewater. However, the development of high-performance electrocatalysts is typically achieved using a trial-and-error method, and myriad materials need to be tested. Herein, we develop a systematic platform to develop electrocatalysts toward the electrochemical reduction of oxyanions in aqueous solution. This framework includes the liquid robot synthesis of electrocatalysts and electrochemical screening of the as-produced materials via cyclic voltammetry and chronoamperometry technique on those showing promising cyclic voltammetry results. For a case study, the synthesis and electrocatalytic performance toward the electroreduction of nitrate have been successfully validated on metal nanoparticles, of which the superior performance of copper has been identified. This result is in good agreement with the theoretical calculations, suggesting the effectiveness of the platform for the development of electrocatalysts for oxyanion reduction.

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“…Fuel cells are regarded as a clean energy conversion device in the future because they could directly convert chemical energy into electricity, reduce dependence on fossil fuels, and solve environmental problems and global climate change. − As for direct alcohol fuel cells (DAFCs), the chemical energy of alcohols as fuel into electricity made them represent a potential and promising alternative energy source for fossil fuels. − Alcohols include methanol, ethanol, and ethylene glycol, among which methanol could be easily oxidized and sustainably obtained and had the virtue of being biodegradable and relatively inexpensive. , Furthermore, methanol also had the characteristics of high power density, high energy efficiency, convenient transportation and storage, etc. − Thus, the direct methanol fuel cell (DMFC) was considered as a promising power source for portable electronic devices and electric vehicles. − Lots of research showed that a Pt-based catalyst was extensively studied because of its outstanding activity for methanol electro-oxidation (MOR), as well as durability in harsh and oxidic conditions . However, the Pt-based catalyst had high cost, scarce resource, low utilization rate, and low durability caused by the CO-like poisoning species, which limited its potential commercial value. , To address these issues, Pd became the most attractive alternative because it has an abundance of at least 50 times of Pt .…”

Section: Introductionmentioning

confidence: 99%

Investigation of Pd₂B- and NiB-Doped Pd–Ni/C Electrocatalysts with High Activity for Methanol Oxidation

Wu,

Yan,

et al. 2024

ACS Appl. Energy Mater.

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The Pd−Ni/C catalyst was synthesized under medium strongly acidic media regulated by ammonia solution, using NaBH 4 as a reducing agent and polyvinylpyrrolidone (PVP) as a protector. The TEM, HRTEM, and XRD results exhibited that the Pd−Ni/C catalyst was successfully synthesized and doped with Pd 2 B and NiB. The XPS analysis showed that Pd and Ni mainly existed with an oxidized state in the Pd−Ni/C catalysts, and Pd and Ni also had a strong electronic interaction. Moreover, B and Ni were respectively inserted into the atomic spacing of Pd−Pd, which significantly changed the surface electronic state and atomic spacing of Pd, helping to improve the activity of the Pd−Ni/C catalyst. The electrochemical performance analyzed through cyclic voltammetry, chronoamperometry (CA), and electrochemical impedance spectroscopy (EIS) displayed that the Pd−Ni/C catalyst had good activity and CO tolerance for methanol electro-oxidation. Furthermore, the Pd−Ni/C catalyst synthesized at which the ratio between the actual and stoichiometric amounts of NaBH 4 was 25 (Pd−Ni/C-25) showed the optimal ECSA and anodic current density for methanol electro-oxidation, respectively reaching 1602.2 cm 2 mg −1 Pd and 1406.5 mA mg −1 Pd. Moreover, the linear relationship between the methanol oxidation on the Pd−Ni/C-25 catalyst and the square root of the scan rate indicated that the electrokinetics of this electrochemical reaction was a diffusion-controlled process, further implying its excellent electrocatalytic performance. The results of the CA curves showed that the Pd−Ni/C-25 catalyst also had excellent durability because of its good antitoxicity. The EIS results presented that the Pd−Ni/C-25 catalyst had the best charge transfer efficiency among these Pd−Ni/C catalysts. The good activity, CO tolerance, durability, and charge transfer efficiency of the Pd−Ni/C-25 catalyst demonstrated its wide potential application in direct methanol fuel cells.

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Enhanced Electrocatalytic Performance of Pt Nanoparticles Incorporated CeO2 Nanorods on Polyaniline-Chitosan Support for Methanol Electrooxidation (Experimental and Statistical Analysis)

Cited by 9 publications

References 76 publications

Review and Development of Anode Electrocatalyst Carriers for Direct Methanol Fuel Cell

Review and Development of Anode Electrocatalyst Carriers for Direct Methanol Fuel Cell

Integrated Electrocatalyst Platform for Electroreduction of Oxyanions in Water

Investigation of Pd₂B- and NiB-Doped Pd–Ni/C Electrocatalysts with High Activity for Methanol Oxidation

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Enhanced Electrocatalytic Performance of Pt Nanoparticles Incorporated CeO2 Nanorods on Polyaniline-Chitosan Support for Methanol Electrooxidation (Experimental and Statistical Analysis)

Cited by 9 publications

References 76 publications

Review and Development of Anode Electrocatalyst Carriers for Direct Methanol Fuel Cell

Review and Development of Anode Electrocatalyst Carriers for Direct Methanol Fuel Cell

Integrated Electrocatalyst Platform for Electroreduction of Oxyanions in Water

Investigation of Pd2B- and NiB-Doped Pd–Ni/C Electrocatalysts with High Activity for Methanol Oxidation

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Product

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About

Investigation of Pd₂B- and NiB-Doped Pd–Ni/C Electrocatalysts with High Activity for Methanol Oxidation