Supporting PtRh alloy nanoparticle catalysts by electrodeposition on carbon paper for the ethanol electrooxidation in acidic medium

Alcaide, Francisco; Álvarez, Garbiñe; Cabot, Pere Lluı́s; Genova-Koleva, Radostina V.; Grande, Hans‐Jürgen; Martı́nez-Huerta, M.V.; Miguel, Óscar

doi:10.1016/j.jelechem.2020.113960

Cited by 16 publications

(16 citation statements)

References 66 publications

(94 reference statements)

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“…These features have been already observed on different electrocatalysts; such as Pt/C, Pt-Rh, Pt-Ni/C and Pt-Sn/C. [13][14][15][16][17][18][19][20] The rst oxidation peak (peak I) corresponds mainly to the formation of CO 2 for ethanol and to the formation of CO 2 and acetone for 2-propanol whereas the second oxidation peak (peak II) is caused by other products as acetic acid and acetaldehyde for ethanol and to the oxidation of acetone for 2-propanol. The mechanism of ethanol electrooxidation in acid solution has been summarized as the following scheme of parallel reactions:…”

Section: Ethanol and 2-propanol Electrooxidation On Pt/c And Pt-ni/c supporting

confidence: 56%

“…However, Pt is easily poisoned by strongly adsorbed residues of alcohol electro-oxidation. 12 To overcome this drawback, various metals have been studied in several combinations with Pt, resulting on binary or ternary metallic electrocatalysts, such as Pt-Ru, 17 Pt-Sn, 18 Pt-Rh 19 and Pt-Sn-Mo. 20 The promoting effect of second or third elements has been attributed to the synergistic and electronic effects.…”

Section: Introductionmentioning

confidence: 99%

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Electrocatalytic performance of Pt–Ni nanoparticles supported on an activated graphite electrode for ethanol and 2-propanol oxidation

et al. 2020

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Section: Ethanol and 2-propanol Electrooxidation On Pt/c And Pt-ni/c supporting

confidence: 56%

Section: Introductionmentioning

confidence: 99%

Electrocatalytic performance of Pt–Ni nanoparticles supported on an activated graphite electrode for ethanol and 2-propanol oxidation

et al. 2020

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“…Alcaide et al 106 proved that the achievement of the DEFC could be far enhanced by consuming Pt60Rh40 electrodeposited electrodes on carbon as anode. The activation energy of Pt60Rh40 is low, leading to high CO and ethanol electro‐oxidation.…”

Section: Class Of Dlfcmentioning

confidence: 99%

Progress and challenges: Review for direct liquid fuel cell

et al. 2021

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Summary Direct liquid fuel cell (DLFC) is one of the leading fuel cell types due to their great features of superior energy density, modest configuration, small size in fuel container, immediate boosting, and effortless storage and carriage. Commercially used liquid fuel types are prepared using alcohols, such as methanol or ethanol, glycol, and acids. DLFCs face great challenges although they are potentially far‐reaching depending on the expensive catalysts and the use of high‐loading catalyst. More questions that should be addressed to ensure excellent DLFC performance include cathode flooding, fuel crossover, numerous side yield production, fuel security, and unverified elongated‐duration robustness. Further studies need to be carried out to ensure the continuous improvement of the quality of DLFCs' performance and their penetration in the commercial market. To date, direct liquid fuel cells made of methanol and ethanol have been successfully produced in commercial scale, but other types of DLFCs are still under study. In this review, introduction to DLFC will be discussed by covering work and commercialization as well as recent progress and challenges encountered.

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“…The electrooxidation of ethanol is also of special interest because it has a high energy content, with 12 electrons per mol, low toxicity and little environmental concerns [4,5]. The ethanol oxidation reaction (EOR) is more complex than that of methanol because it requires de C-C bond breaking and the CO 2 yield is small in mild conditions of temperature and pressure [20,21]. Good performances have been reported when using PtRu, PtRh, PtPd and PtSn catalysts [20,[22][23][24][25][26].…”

Section: Introductionmentioning

confidence: 99%

“…The ethanol oxidation reaction (EOR) is more complex than that of methanol because it requires de C-C bond breaking and the CO 2 yield is small in mild conditions of temperature and pressure [20,21]. Good performances have been reported when using PtRu, PtRh, PtPd and PtSn catalysts [20,[22][23][24][25][26]. Conversely, Fe, Ni and Co supported on micro/nano-structured carbon did not present catalytic activity for the EOR [27].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Evaluation of PtNi Electrocatalysts for CO and Methanol Oxidation in Low Temperature Fuel Cells

et al. 2020

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Pt(Ni)/C and PtRu(Ni)/C catalysts were synthesized by electroless deposition of Ni on a carbon dispersion followed by sequenced Pt deposition and spontaneous deposition of Ru species. The structural analyses of the catalysts with 88:12 and 98:2 Pt:Ni atomic ratios pointed out to the formation of small hexagonal Ni crystallites covered by thin cubic Pt surface structures with no evidence about PtNi alloy formation. The onset potentials for CO oxidation on Pt(Ni)/C and PtRu(Ni)/C were about 0.10 and 0.24 V more negative than those of Pt/C, thus indicating their better CO tolerance. The surface Ru species appeared to have the major effect by facilitating the CO removal by the bifunctional mechanism. The onset potential for the methanol oxidation reaction (MOR) of Pt(Ni)/C was about 0.15 V lower than that of Pt/C. The mass and specific activities together with the exchange current densities of the Pt(Ni)/C catalysts were also higher than those of Pt/C, making in evidence their higher activity in front of the MOR. The Tafel slopes for the MOR on Pt(Ni)/C suggested different reaction mechanism than on Pt/C. The electronic (ligand) effect of Ni on Pt was considered the main reason to explain the higher activity of Pt(Ni)/C in front of the CO oxidation and the MOR.

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Supporting PtRh alloy nanoparticle catalysts by electrodeposition on carbon paper for the ethanol electrooxidation in acidic medium

Cited by 16 publications

References 66 publications

Electrocatalytic performance of Pt–Ni nanoparticles supported on an activated graphite electrode for ethanol and 2-propanol oxidation

Electrocatalytic performance of Pt–Ni nanoparticles supported on an activated graphite electrode for ethanol and 2-propanol oxidation

Progress and challenges: Review for direct liquid fuel cell

Synthesis and Evaluation of PtNi Electrocatalysts for CO and Methanol Oxidation in Low Temperature Fuel Cells

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