High performance membrane-electrode assembly based on a surface-modified membrane

Sangil Han; Jang Woo Lee; Chan Kwak; Geun Seok Chai; In Hyuk Son; Moon Yup Jang; Sung Guk An; Sung Yong Cho; Jun Young Kim; Hyung Wook Kim; Alexey Alexandrovych Serov; Youngtai Yoo; Kie Hyun Nam

doi:10.1016/j.jpowsour.2006.12.095

High performance membrane-electrode assembly based on a surface-modified membrane

Sangil Han, Jang Woo Lee, Chan Kwak, Geun Seok Chai, In Hyuk Son, Moon Yup Jang, Sung Guk An, Sung Yong Cho, Jun Young Kim, Hyung Wook Kim, Alexey Alexandrovych Serov, Youngtai Yoo, Kie Hyun Nam

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

7 Scopus citations

Abstract

A surface-modified membrane is prepared using a sputtering technique that deposits gold directly on a Nafion^® 115 membrane surface that is roughened with silicon carbide paper. The surface-modified membranes are characterized by means of a scanning electron microscope (SEM), differential scanning calorimetry (DSC), and water contact-angle analysis. A single direct methanol fuel cell (DMFC) with a surface-modified membrane exhibits enhanced performance (160 mW cm^-2), while a bare Nafion^® 115 cell yields 113 mW cm^-2 at 0.4 V and an operating temperature of 70 °C. From FE-SEM images and CO_ad stripping voltammograms, it is also found that the gold layer is composed of clusters of porous nodule-like particles, which indicates that an anode with nodule-like gold leads to the preferential oxidation of carbon monoxide. These results suggest that the topology of gold in the interfacial area and its electrocatalytic nature may be the critical factors that affect DMFC performance.

Original language	English
Pages (from-to)	74-78
Number of pages	5
Journal	Journal of Power Sources
Volume	167
Issue number	1
DOIs	https://doi.org/10.1016/j.jpowsour.2006.12.095
State	Published - May 1 2007
Externally published	Yes

Funding

This work was supported by a Korea Research Foundation grant (KRF-2004-005-D00046). The authors also acknowledge the financial support of Konkuk University.

Funders	Funder number
Korea Research Foundation	KRF-2004-005-D00046
Konkuk University

Keywords

Carbon monoxide stripping
Direct methanol fuel cell
Nafion
Nodule-like gold
Surface-modified membrane
Swelling

UN SDGs

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

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10.1016/j.jpowsour.2006.12.095

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title = "High performance membrane-electrode assembly based on a surface-modified membrane",

abstract = "A surface-modified membrane is prepared using a sputtering technique that deposits gold directly on a Nafion{\textregistered} 115 membrane surface that is roughened with silicon carbide paper. The surface-modified membranes are characterized by means of a scanning electron microscope (SEM), differential scanning calorimetry (DSC), and water contact-angle analysis. A single direct methanol fuel cell (DMFC) with a surface-modified membrane exhibits enhanced performance (160 mW cm-2), while a bare Nafion{\textregistered} 115 cell yields 113 mW cm-2 at 0.4 V and an operating temperature of 70 °C. From FE-SEM images and COad stripping voltammograms, it is also found that the gold layer is composed of clusters of porous nodule-like particles, which indicates that an anode with nodule-like gold leads to the preferential oxidation of carbon monoxide. These results suggest that the topology of gold in the interfacial area and its electrocatalytic nature may be the critical factors that affect DMFC performance.",

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author = "Sangil Han and Lee, {Jang Woo} and Chan Kwak and Chai, {Geun Seok} and Son, {In Hyuk} and Jang, {Moon Yup} and An, {Sung Guk} and Cho, {Sung Yong} and Kim, {Jun Young} and Kim, {Hyung Wook} and Serov, {Alexey Alexandrovych} and Youngtai Yoo and Nam, {Kie Hyun}",

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doi = "10.1016/j.jpowsour.2006.12.095",

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T1 - High performance membrane-electrode assembly based on a surface-modified membrane

AU - Han, Sangil

AU - Lee, Jang Woo

AU - Kwak, Chan

AU - Chai, Geun Seok

AU - Son, In Hyuk

AU - Jang, Moon Yup

AU - An, Sung Guk

AU - Cho, Sung Yong

AU - Kim, Jun Young

AU - Kim, Hyung Wook

AU - Serov, Alexey Alexandrovych

AU - Yoo, Youngtai

AU - Nam, Kie Hyun

PY - 2007/5/1

Y1 - 2007/5/1

N2 - A surface-modified membrane is prepared using a sputtering technique that deposits gold directly on a Nafion® 115 membrane surface that is roughened with silicon carbide paper. The surface-modified membranes are characterized by means of a scanning electron microscope (SEM), differential scanning calorimetry (DSC), and water contact-angle analysis. A single direct methanol fuel cell (DMFC) with a surface-modified membrane exhibits enhanced performance (160 mW cm-2), while a bare Nafion® 115 cell yields 113 mW cm-2 at 0.4 V and an operating temperature of 70 °C. From FE-SEM images and COad stripping voltammograms, it is also found that the gold layer is composed of clusters of porous nodule-like particles, which indicates that an anode with nodule-like gold leads to the preferential oxidation of carbon monoxide. These results suggest that the topology of gold in the interfacial area and its electrocatalytic nature may be the critical factors that affect DMFC performance.

AB - A surface-modified membrane is prepared using a sputtering technique that deposits gold directly on a Nafion® 115 membrane surface that is roughened with silicon carbide paper. The surface-modified membranes are characterized by means of a scanning electron microscope (SEM), differential scanning calorimetry (DSC), and water contact-angle analysis. A single direct methanol fuel cell (DMFC) with a surface-modified membrane exhibits enhanced performance (160 mW cm-2), while a bare Nafion® 115 cell yields 113 mW cm-2 at 0.4 V and an operating temperature of 70 °C. From FE-SEM images and COad stripping voltammograms, it is also found that the gold layer is composed of clusters of porous nodule-like particles, which indicates that an anode with nodule-like gold leads to the preferential oxidation of carbon monoxide. These results suggest that the topology of gold in the interfacial area and its electrocatalytic nature may be the critical factors that affect DMFC performance.

KW - Carbon monoxide stripping

KW - Direct methanol fuel cell

KW - Nafion

KW - Nodule-like gold

KW - Surface-modified membrane

KW - Swelling

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JO - Journal of Power Sources

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High performance membrane-electrode assembly based on a surface-modified membrane

Abstract

Funding

Keywords

UN SDGs

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