Miniature H2/O2 fuel cells using TiO2 nanotube substrates and sputtered Pt catalyst

Woo Jin Lee; Dong Ha Lim; W. H. Smyrl

doi:10.1016/j.jpowsour.2013.05.029

Miniature H₂/O₂ fuel cells using TiO₂ nanotube substrates and sputtered Pt catalyst

Woo Jin Lee
, Dong Ha Lim
, W. H. Smyrl

Chemical Engineering and Materials Science

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

7 Scopus citations

Abstract

Modified designs for a miniature H₂/air fuel cell are described using Pt sputtered on titanium oxide nanotube (Pt/TONT) as a catalyst at low mass loadings. Titanium microgrids or Ti evaporated onto a silicon substrate with holes at the center were used as substrates that were then anodized in fluoride-containing electrolytes to form the TONT arrays. Self-organized tubes grew as anodizing time increased, resulting in the highly enhanced surface area for electrochemical reactions. High cathodic current on cyclic voltammogram of Pt/TONT catalyst indicated high catalytic activity for the oxygen reduction reaction (ORR). The miniature fuel cells were successful, and showed high power densities up to 9.64 mW cm^-2 at potentials from 0.7 V to 0.2 V.

Original language	English (US)
Pages (from-to)	612-617
Number of pages	6
Journal	Journal of Power Sources
Volume	240
DOIs	https://doi.org/10.1016/j.jpowsour.2013.05.029
State	Published - 2013

Bibliographical note

Funding Information:
This research was supported by the Initiative for Renewable Energy and the Environment of the University of Minnesota, project no. LG-MC3-2005 and by the collaborative project funded by King Abdulaziz City for Science and Technology, Riyadh, Saudi Arabia.

UN SDGs

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

SDG 7 Affordable and Clean Energy

Keywords

Electrochemical anodization methods
Miniature fuel cell
Oxygen reduction reaction
Titanium oxide nanotube

Publisher link

10.1016/j.jpowsour.2013.05.029

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Cite this

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title = "Miniature H2/O2 fuel cells using TiO2 nanotube substrates and sputtered Pt catalyst",

abstract = "Modified designs for a miniature H2/air fuel cell are described using Pt sputtered on titanium oxide nanotube (Pt/TONT) as a catalyst at low mass loadings. Titanium microgrids or Ti evaporated onto a silicon substrate with holes at the center were used as substrates that were then anodized in fluoride-containing electrolytes to form the TONT arrays. Self-organized tubes grew as anodizing time increased, resulting in the highly enhanced surface area for electrochemical reactions. High cathodic current on cyclic voltammogram of Pt/TONT catalyst indicated high catalytic activity for the oxygen reduction reaction (ORR). The miniature fuel cells were successful, and showed high power densities up to 9.64 mW cm-2 at potentials from 0.7 V to 0.2 V.",

keywords = "Electrochemical anodization methods, Miniature fuel cell, Oxygen reduction reaction, Titanium oxide nanotube",

author = "Lee, \{Woo Jin\} and Lim, \{Dong Ha\} and Smyrl, \{W. H.\}",

note = "Funding Information: This research was supported by the Initiative for Renewable Energy and the Environment of the University of Minnesota, project no. LG-MC3-2005 and by the collaborative project funded by King Abdulaziz City for Science and Technology, Riyadh, Saudi Arabia.",

year = "2013",

doi = "10.1016/j.jpowsour.2013.05.029",

language = "English (US)",

volume = "240",

pages = "612--617",

journal = "Journal of Power Sources",

issn = "0378-7753",

publisher = "Elsevier B.V.",

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T1 - Miniature H2/O2 fuel cells using TiO2 nanotube substrates and sputtered Pt catalyst

AU - Lee, Woo Jin

AU - Lim, Dong Ha

AU - Smyrl, W. H.

N1 - Funding Information: This research was supported by the Initiative for Renewable Energy and the Environment of the University of Minnesota, project no. LG-MC3-2005 and by the collaborative project funded by King Abdulaziz City for Science and Technology, Riyadh, Saudi Arabia.

PY - 2013

Y1 - 2013

N2 - Modified designs for a miniature H2/air fuel cell are described using Pt sputtered on titanium oxide nanotube (Pt/TONT) as a catalyst at low mass loadings. Titanium microgrids or Ti evaporated onto a silicon substrate with holes at the center were used as substrates that were then anodized in fluoride-containing electrolytes to form the TONT arrays. Self-organized tubes grew as anodizing time increased, resulting in the highly enhanced surface area for electrochemical reactions. High cathodic current on cyclic voltammogram of Pt/TONT catalyst indicated high catalytic activity for the oxygen reduction reaction (ORR). The miniature fuel cells were successful, and showed high power densities up to 9.64 mW cm-2 at potentials from 0.7 V to 0.2 V.

AB - Modified designs for a miniature H2/air fuel cell are described using Pt sputtered on titanium oxide nanotube (Pt/TONT) as a catalyst at low mass loadings. Titanium microgrids or Ti evaporated onto a silicon substrate with holes at the center were used as substrates that were then anodized in fluoride-containing electrolytes to form the TONT arrays. Self-organized tubes grew as anodizing time increased, resulting in the highly enhanced surface area for electrochemical reactions. High cathodic current on cyclic voltammogram of Pt/TONT catalyst indicated high catalytic activity for the oxygen reduction reaction (ORR). The miniature fuel cells were successful, and showed high power densities up to 9.64 mW cm-2 at potentials from 0.7 V to 0.2 V.

KW - Electrochemical anodization methods

KW - Miniature fuel cell

KW - Oxygen reduction reaction

KW - Titanium oxide nanotube

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JO - Journal of Power Sources

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