Effect of Mesopores in the Marimo nanocarbon anode material on the power generation performance of direct glucose fuel cell

Akiyama, Shingo; Nakagawa, Kiyoharu

doi:10.1016/j.cartre.2021.100058

Cited by 6 publications

(2 citation statements)

References 15 publications

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“…Generally, loading Pt-based NCs on the carbon supports (graphene, carbon nanotubes, carbon black, etc.) is an effective strategy for enhancing catalytic stability [23][24][25][26][27]. Zhou et al investigated the catalytic properties of high-index faceted Pt NCs supported on carbon black (HIF-Pt/C) for ethanol electrooxidation.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Carbon Black Loaded Pt Concave Nanocubes with High-Index Facets and their Enhanced Electrocatalytic Properties toward Glucose Oxidation

Xu¹,

Ma²,

Su³

et al. 2022

Preprint

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Catalyst with high catalytic activity and good stability are desirable in the electrocatalytic oxidation of glucose. Herein, Pt concave nanocubes with high-index facets (HIFs) supported by carbon black (Pt CNC/CB) are prepared through a hydrothermal method. The experimental results demonstrate that the peak current densities in different potential regions on the Pt CNC/CB anode are 0.22, 0.20, and 0.60 mA cm−2, respectively. The glucose oxidation reaction shows superior performances in basic and neutral conditions than in acid conditions. Better stability is achieved by Pt CNC/CB than Pt concave nanocubes (Pt CNCs). Abundant surface defects with low-coordinated atom numbers, such as the steps, kinks, and edges, are served as active sites in the electrocatalytic oxidation of glucose. With the addition of carbon black, the catalytic activity can be improved by facilitating the full exposure of the active surface defects on the HIFs of Pt CNCs. Moreover, to address the aggregation of Pt CNCs, caused by the high surface energy of HIFs, the introduction of carbon material is an effective way to preserve the HIFs, and thus enhance the stability of the catalyst. Hence, the prepared Pt CNC/CB electrocatalyst has great potential to be applied in the electrooxidation of glucose.

show abstract

Section: Introductionmentioning

confidence: 99%

Synthesis of Carbon Black Loaded Pt Concave Nanocubes with High-Index Facets and their Enhanced Electrocatalytic Properties toward Glucose Oxidation

Xu¹,

Ma²,

Su³

et al. 2022

Preprint

View full text Add to dashboard Cite

show abstract

“…Generally, loading Pt-based NCs on the carbon supports (graphene, carbon nanotubes, carbon black, etc.) is an effective strategy for enhancing the catalytic stability and promoting the dispersion of the catalyst [ 24 , 25 , 26 , 27 , 28 , 29 ]. Zhou et al investigated the catalytic properties of high-index faceted Pt NCs supported on carbon black (HIF-Pt/C) for ethanol electrooxidation.…”

Section: Introductionmentioning

confidence: 99%

The Synthesis of Carbon Black-Loaded Pt Concave Nanocubes with High-Index Facets and Their Enhanced Electrocatalytic Properties toward Glucose Oxidation

et al. 2022

Nanomaterials

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Catalysts with high catalytic activity and good stability are desirable in the electrocatalytic oxidation of glucose. Herein, Pt concave nanocubes with high-index facets (HIFs) supported by carbon black (Pt CNC/CB) are prepared through a hydrothermal method. The experimental results demonstrate that the peak current densities in different potential regions on the Pt CNC/CB anode are 0.22, 0.20, and 0.60 mA cm−2. The catalytic process of the glucose oxidation reaction is investigated in electrolytes with different pH values. Better stability is achieved by Pt CNC/CB than by Pt concave nanocubes (Pt CNCs). Abundant surface defects with low-coordinated atom numbers, such as steps, kinks, and edges, served as active sites in the electrocatalytic oxidation of glucose. With the addition of carbon black, the catalytic activity can be improved by facilitating the full exposure of the active surface defects on the HIFs of the Pt CNCs. Moreover, to address the aggregation of Pt CNCs, caused by the high surface energy of HIFs, the introduction of carbon material is an effective way to preserve the HIFs and thus enhance the stability of the catalyst. Hence, the prepared Pt CNC/CB electrocatalyst has great potential to be applied in the electrooxidation of glucose.

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Effect of fine structure and pore volume in the Marimo-like carbon cathode material on the oxygen reduction reaction for the polymer electrolyte fuel cell

et al. 2023

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We measured the rotating ring-disk electrode (RRDE) voltammetry curves of a Pt catalyst supported on Marimo-like carbon (MC) to clarify the effect of carbon nanofilaments (CNFs) morphology and fine structures consisting of MC cathode material on the oxygen reduction reaction (ORR) activity for Polymer electrolyte fuel cells. The specific surface area and pore volume of MCs are influenced by their morphology and fine structures. MCs grown with Ni–Cu bimetal catalyst (represented as Ni80Cu20MC), having an octopus-like morphology, yielded four times larger total pore volume than that measured from the MC grown with Ni catalyst (Ni100MC). In the case of Ni80Cu20MC, coin-stacked graphenes perpendicular to the filament axis formed CNFs. Ni100MC consists of cup-stacked CNFs. The difference in the graphene stacked fine structure resulted in a different number of graphene edges covering the CNF surface; however, both supported Pt particle sizes and their distributions were similar. Linear sweep voltammetry with a RRDE revealed that the Pt/Ni80Cu20MC ORR onset potential was higher than that observed from the Pt/Ni100MC. This value is suggested to be correlates with the ORR activity. The origin of the ORR difference was discussed on the basis of the structural difference in the MCs.

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Effect of Mesopores in the Marimo nanocarbon anode material on the power generation performance of direct glucose fuel cell

Cited by 6 publications

References 15 publications

Synthesis of Carbon Black Loaded Pt Concave Nanocubes with High-Index Facets and their Enhanced Electrocatalytic Properties toward Glucose Oxidation

Synthesis of Carbon Black Loaded Pt Concave Nanocubes with High-Index Facets and their Enhanced Electrocatalytic Properties toward Glucose Oxidation

The Synthesis of Carbon Black-Loaded Pt Concave Nanocubes with High-Index Facets and Their Enhanced Electrocatalytic Properties toward Glucose Oxidation

Effect of fine structure and pore volume in the Marimo-like carbon cathode material on the oxygen reduction reaction for the polymer electrolyte fuel cell

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