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

50 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

Access to Document

10.1021/acsami.7b05873

Cite this

@article{23445c0469c242b59d2f73bdd9a8529c,

title = "Enhanced Electrocatalytic Activity of Pt/3D Hierarchical Bimodal Macroporous Carbon Nanospheres",

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 \%.",

keywords = "Nanostructured Pt/C, Pt deposition, fuel cell, high-dispersibility, spray pyrolysis",

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

note = "Publisher Copyright: {\textcopyright} 2017 American Chemical Society.",

year = "2017",

month = jul,

day = "19",

doi = "10.1021/acsami.7b05873",

language = "English",

volume = "9",

pages = "23792--23799",

journal = "ACS Applied Materials and Interfaces",

issn = "1944-8244",

publisher = "American Chemical Society",

number = "28",

}

TY - JOUR

T1 - Enhanced Electrocatalytic Activity of Pt/3D Hierarchical Bimodal Macroporous Carbon Nanospheres

AU - Balgis, Ratna

AU - Widiyastuti, W.

AU - Ogi, Takashi

AU - Okuyama, Kikuo

PY - 2017/7/19

Y1 - 2017/7/19

N2 - 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 %.

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

KW - Pt deposition

KW - fuel cell

KW - high-dispersibility

KW - spray pyrolysis

UR - https://www.scopus.com/pages/publications/85024895247

U2 - 10.1021/acsami.7b05873

DO - 10.1021/acsami.7b05873

M3 - Article

C2 - 28653532

AN - SCOPUS:85024895247

SN - 1944-8244

VL - 9

SP - 23792

EP - 23799

JO - ACS Applied Materials and Interfaces

JF - ACS Applied Materials and Interfaces

IS - 28

ER -

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

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this