Enhanced electrocatalytic property of Pt/C electrode with double catalyst layers for PEMFC

Dung Van Dao; Ganpurev Adilbish; In Hwan Lee; Yeon Tae Yu

doi:10.1016/j.ijhydene.2019.07.156

Enhanced electrocatalytic property of Pt/C electrode with double catalyst layers for PEMFC

Dung Van Dao, Ganpurev Adilbish, In Hwan Lee, Yeon Tae Yu

Department of Materials Science and Engineering

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

20 Citations (Scopus)

Abstract

The objective of this study was to fabricate an efficient structural catalyst electrode of Pt/C consisting of double catalyst layers (DCL) with catalyst-ink spray and electrophoresis deposition (EPD) methods. The prepared Pt/C DCL electrode with Pt-dispersed and Pt-concentrated catalyst layers demonstrated better electrochemical properties than individual Pt/C single catalyst layer (SCL) electrodes. An S₁E₁ DCL electrode with Pt loading weight ratio of 1:1 between the Pt-dispersed and Pt-concentrated layers exhibited a higher electrochemical surface area (ECSA, 57.2 m²/g_Pt) and lower internal resistance (20 Ω) than an individual Pt-dispersed SCL electrode prepared with only the spray method (S₁E₀, 31.9 m²/g_Pt and 132 Ω) and an individual Pt-concentrated SCL electrode prepared with only the EPD method (S₀E₁, 34.1 m²/g_Pt and 120 Ω). The S₁E₁ DCL electrode exhibited 2.1 and 1.7 times higher mass activity for methanol oxidation reaction (MOR) than S₁E₀ and S₀E₁ SCL electrodes, respectively (1,230 mA/mg_Pt for S₁E₁ vs. 595 mA/mg_Pt for S₁E₀ and 715 mA/mg_Pt for S₀E₁). In addition, the S₁E₁ DCL electrode demonstrated high MOR durability after 1,000 sequential cycles while losing 30% activity. Meanwhile, S₀E₁ and S₁E₀ SCL electrodes rapidly lost 52% and 55% activity, respectively. These improved electrochemical performances of DCL electrode were owing to the advantages of separating Pt catalysts into two layers, which provides more Pt catalytic active sites to the electrolyte than those in SCL electrodes. Our observation may aid in minimizing the usage amount of Pt catalysts (~0.16 mg_Pt/cm²) compared to those in present commercial Pt/C composites (~0.3 mg_Pt/cm²) as well as maximize efficient Pt utilization. More importantly, with regard to proton exchange membrane fuel cell (PEMFC) activity as a crucial in-situ characterization of a catalyst, a membrane electrode assembly (MEA) containing S₁E₁ as the anode electrode could generate mass maximum power density of 3.84 W/mg_Pt, 3.6 times higher than the present commercial one (1.07 W/mg_Pt).

Original language	English
Pages (from-to)	24580-24590
Number of pages	11
Journal	International Journal of Hydrogen Energy
Volume	44
Issue number	45
DOIs	https://doi.org/10.1016/j.ijhydene.2019.07.156
Publication status	Published - 2019 Sept 20

Bibliographical note

Publisher Copyright:
© 2019 Hydrogen Energy Publications LLC

Keywords

Catalyst electrode
Double catalyst layers
Electrochemical property
PEMFC
Pt catalyst

ASJC Scopus subject areas

Renewable Energy, Sustainability and the Environment
Fuel Technology
Condensed Matter Physics
Energy Engineering and Power Technology

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.ijhydene.2019.07.156

Cite this

@article{a8473cb2685c4b3297e8bb5446fd48b8,

title = "Enhanced electrocatalytic property of Pt/C electrode with double catalyst layers for PEMFC",

abstract = "The objective of this study was to fabricate an efficient structural catalyst electrode of Pt/C consisting of double catalyst layers (DCL) with catalyst-ink spray and electrophoresis deposition (EPD) methods. The prepared Pt/C DCL electrode with Pt-dispersed and Pt-concentrated catalyst layers demonstrated better electrochemical properties than individual Pt/C single catalyst layer (SCL) electrodes. An S1E1 DCL electrode with Pt loading weight ratio of 1:1 between the Pt-dispersed and Pt-concentrated layers exhibited a higher electrochemical surface area (ECSA, 57.2 m2/gPt) and lower internal resistance (20 Ω) than an individual Pt-dispersed SCL electrode prepared with only the spray method (S1E0, 31.9 m2/gPt and 132 Ω) and an individual Pt-concentrated SCL electrode prepared with only the EPD method (S0E1, 34.1 m2/gPt and 120 Ω). The S1E1 DCL electrode exhibited 2.1 and 1.7 times higher mass activity for methanol oxidation reaction (MOR) than S1E0 and S0E1 SCL electrodes, respectively (1,230 mA/mgPt for S1E1 vs. 595 mA/mgPt for S1E0 and 715 mA/mgPt for S0E1). In addition, the S1E1 DCL electrode demonstrated high MOR durability after 1,000 sequential cycles while losing 30% activity. Meanwhile, S0E1 and S1E0 SCL electrodes rapidly lost 52% and 55% activity, respectively. These improved electrochemical performances of DCL electrode were owing to the advantages of separating Pt catalysts into two layers, which provides more Pt catalytic active sites to the electrolyte than those in SCL electrodes. Our observation may aid in minimizing the usage amount of Pt catalysts (~0.16 mgPt/cm2) compared to those in present commercial Pt/C composites (~0.3 mgPt/cm2) as well as maximize efficient Pt utilization. More importantly, with regard to proton exchange membrane fuel cell (PEMFC) activity as a crucial in-situ characterization of a catalyst, a membrane electrode assembly (MEA) containing S1E1 as the anode electrode could generate mass maximum power density of 3.84 W/mgPt, 3.6 times higher than the present commercial one (1.07 W/mgPt).",

keywords = "Catalyst electrode, Double catalyst layers, Electrochemical property, PEMFC, Pt catalyst",

author = "{Van Dao}, Dung and Ganpurev Adilbish and Lee, {In Hwan} and Yu, {Yeon Tae}",

note = "Publisher Copyright: {\textcopyright} 2019 Hydrogen Energy Publications LLC",

year = "2019",

month = sep,

day = "20",

doi = "10.1016/j.ijhydene.2019.07.156",

language = "English",

volume = "44",

pages = "24580--24590",

journal = "International Journal of Hydrogen Energy",

issn = "0360-3199",

publisher = "Elsevier Limited",

number = "45",

}

TY - JOUR

T1 - Enhanced electrocatalytic property of Pt/C electrode with double catalyst layers for PEMFC

AU - Van Dao, Dung

AU - Adilbish, Ganpurev

AU - Lee, In Hwan

AU - Yu, Yeon Tae

PY - 2019/9/20

Y1 - 2019/9/20

N2 - The objective of this study was to fabricate an efficient structural catalyst electrode of Pt/C consisting of double catalyst layers (DCL) with catalyst-ink spray and electrophoresis deposition (EPD) methods. The prepared Pt/C DCL electrode with Pt-dispersed and Pt-concentrated catalyst layers demonstrated better electrochemical properties than individual Pt/C single catalyst layer (SCL) electrodes. An S1E1 DCL electrode with Pt loading weight ratio of 1:1 between the Pt-dispersed and Pt-concentrated layers exhibited a higher electrochemical surface area (ECSA, 57.2 m2/gPt) and lower internal resistance (20 Ω) than an individual Pt-dispersed SCL electrode prepared with only the spray method (S1E0, 31.9 m2/gPt and 132 Ω) and an individual Pt-concentrated SCL electrode prepared with only the EPD method (S0E1, 34.1 m2/gPt and 120 Ω). The S1E1 DCL electrode exhibited 2.1 and 1.7 times higher mass activity for methanol oxidation reaction (MOR) than S1E0 and S0E1 SCL electrodes, respectively (1,230 mA/mgPt for S1E1 vs. 595 mA/mgPt for S1E0 and 715 mA/mgPt for S0E1). In addition, the S1E1 DCL electrode demonstrated high MOR durability after 1,000 sequential cycles while losing 30% activity. Meanwhile, S0E1 and S1E0 SCL electrodes rapidly lost 52% and 55% activity, respectively. These improved electrochemical performances of DCL electrode were owing to the advantages of separating Pt catalysts into two layers, which provides more Pt catalytic active sites to the electrolyte than those in SCL electrodes. Our observation may aid in minimizing the usage amount of Pt catalysts (~0.16 mgPt/cm2) compared to those in present commercial Pt/C composites (~0.3 mgPt/cm2) as well as maximize efficient Pt utilization. More importantly, with regard to proton exchange membrane fuel cell (PEMFC) activity as a crucial in-situ characterization of a catalyst, a membrane electrode assembly (MEA) containing S1E1 as the anode electrode could generate mass maximum power density of 3.84 W/mgPt, 3.6 times higher than the present commercial one (1.07 W/mgPt).

AB - The objective of this study was to fabricate an efficient structural catalyst electrode of Pt/C consisting of double catalyst layers (DCL) with catalyst-ink spray and electrophoresis deposition (EPD) methods. The prepared Pt/C DCL electrode with Pt-dispersed and Pt-concentrated catalyst layers demonstrated better electrochemical properties than individual Pt/C single catalyst layer (SCL) electrodes. An S1E1 DCL electrode with Pt loading weight ratio of 1:1 between the Pt-dispersed and Pt-concentrated layers exhibited a higher electrochemical surface area (ECSA, 57.2 m2/gPt) and lower internal resistance (20 Ω) than an individual Pt-dispersed SCL electrode prepared with only the spray method (S1E0, 31.9 m2/gPt and 132 Ω) and an individual Pt-concentrated SCL electrode prepared with only the EPD method (S0E1, 34.1 m2/gPt and 120 Ω). The S1E1 DCL electrode exhibited 2.1 and 1.7 times higher mass activity for methanol oxidation reaction (MOR) than S1E0 and S0E1 SCL electrodes, respectively (1,230 mA/mgPt for S1E1 vs. 595 mA/mgPt for S1E0 and 715 mA/mgPt for S0E1). In addition, the S1E1 DCL electrode demonstrated high MOR durability after 1,000 sequential cycles while losing 30% activity. Meanwhile, S0E1 and S1E0 SCL electrodes rapidly lost 52% and 55% activity, respectively. These improved electrochemical performances of DCL electrode were owing to the advantages of separating Pt catalysts into two layers, which provides more Pt catalytic active sites to the electrolyte than those in SCL electrodes. Our observation may aid in minimizing the usage amount of Pt catalysts (~0.16 mgPt/cm2) compared to those in present commercial Pt/C composites (~0.3 mgPt/cm2) as well as maximize efficient Pt utilization. More importantly, with regard to proton exchange membrane fuel cell (PEMFC) activity as a crucial in-situ characterization of a catalyst, a membrane electrode assembly (MEA) containing S1E1 as the anode electrode could generate mass maximum power density of 3.84 W/mgPt, 3.6 times higher than the present commercial one (1.07 W/mgPt).

KW - Catalyst electrode

KW - Double catalyst layers

KW - Electrochemical property

KW - PEMFC

KW - Pt catalyst

UR - http://www.scopus.com/inward/record.url?scp=85070709958&partnerID=8YFLogxK

U2 - 10.1016/j.ijhydene.2019.07.156

DO - 10.1016/j.ijhydene.2019.07.156

M3 - Article

AN - SCOPUS:85070709958

SN - 0360-3199

VL - 44

SP - 24580

EP - 24590

JO - International Journal of Hydrogen Energy

JF - International Journal of Hydrogen Energy

IS - 45

ER -

Enhanced electrocatalytic property of Pt/C electrode with double catalyst layers for PEMFC

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

UN SDGs

Access to Document

Other files and links

Fingerprint

Cite this