Enhanced Electrocatalytic Activity of Pt/3D Hierarchical Bimodal Macroporous Carbon Nanospheres

Ratna Balgis; W. Widiyastuti; Takashi Ogi; Kikuo Okuyama

doi:10.1021/acsami.7b05873

Enhanced Electrocatalytic Activity of Pt/3D Hierarchical Bimodal Macroporous Carbon Nanospheres

Ratna Balgis^*, W. Widiyastuti, Takashi Ogi, Kikuo Okuyama

^*Corresponding author for this work

Hiroshima University

Research output: Contribution to journal › Article › peer-review

44 Citations (Scopus)

Abstract

Proton exchange membrane fuel cells require electrocatalysts with a high platinum (Pt) loading, large active surface area, and favorable hydrodynamic profile for practical applications. Here, we report the design of three-dimensional hierarchical bimodal macroporous carbon nanospheres with an interconnected pore system, which are applied as an electrocatalyst support. Carbon-supported Pt (Pt/C) catalysts were prepared by aerosol spray pyrolysis followed by microwave chemical deposition. The hierarchical porous structures not only increased the dispersion of Pt nanoparticles but also improved catalytic performance. A hierarchical bimodal macroporous Pt/C catalyst with a mixture of 30 and 120 nm size pores showed the best performance. The electrochemical surface area and mass activity values of this support were 96 m² g^-1-Pt and 378 mA mg^-1-Pt, respectively at a Pt loading of 15 wt %.

Original language	English
Pages (from-to)	23792-23799
Number of pages	8
Journal	ACS Applied Materials and Interfaces
Volume	9
Issue number	28
DOIs	https://doi.org/10.1021/acsami.7b05873
Publication status	Published - 19 Jul 2017

Keywords

Nanostructured Pt/C
Pt deposition
fuel cell
high-dispersibility
spray pyrolysis

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10.1021/acsami.7b05873

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abstract = "Proton exchange membrane fuel cells require electrocatalysts with a high platinum (Pt) loading, large active surface area, and favorable hydrodynamic profile for practical applications. Here, we report the design of three-dimensional hierarchical bimodal macroporous carbon nanospheres with an interconnected pore system, which are applied as an electrocatalyst support. Carbon-supported Pt (Pt/C) catalysts were prepared by aerosol spray pyrolysis followed by microwave chemical deposition. The hierarchical porous structures not only increased the dispersion of Pt nanoparticles but also improved catalytic performance. A hierarchical bimodal macroporous Pt/C catalyst with a mixture of 30 and 120 nm size pores showed the best performance. The electrochemical surface area and mass activity values of this support were 96 m2 g-1-Pt and 378 mA mg-1-Pt, respectively at a Pt loading of 15 wt %.",

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author = "Ratna Balgis and W. Widiyastuti and Takashi Ogi and Kikuo Okuyama",

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AU - Balgis, Ratna

AU - Widiyastuti, W.

AU - Ogi, Takashi

AU - Okuyama, Kikuo

PY - 2017/7/19

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AB - Proton exchange membrane fuel cells require electrocatalysts with a high platinum (Pt) loading, large active surface area, and favorable hydrodynamic profile for practical applications. Here, we report the design of three-dimensional hierarchical bimodal macroporous carbon nanospheres with an interconnected pore system, which are applied as an electrocatalyst support. Carbon-supported Pt (Pt/C) catalysts were prepared by aerosol spray pyrolysis followed by microwave chemical deposition. The hierarchical porous structures not only increased the dispersion of Pt nanoparticles but also improved catalytic performance. A hierarchical bimodal macroporous Pt/C catalyst with a mixture of 30 and 120 nm size pores showed the best performance. The electrochemical surface area and mass activity values of this support were 96 m2 g-1-Pt and 378 mA mg-1-Pt, respectively at a Pt loading of 15 wt %.

KW - Nanostructured Pt/C

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Enhanced Electrocatalytic Activity of Pt/3D Hierarchical Bimodal Macroporous Carbon Nanospheres

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Keywords

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