Free-standing Pt@RuO2·xH2O nanorod arrays on Si wafers as electrodes for methanol electro-oxidation

Guangyu Zhao; Li Zhang; Kening Sun; Hulin Li

doi:10.1016/j.jpowsour.2013.07.053

Free-standing Pt@RuO₂·xH₂O nanorod arrays on Si wafers as electrodes for methanol electro-oxidation

Guangyu Zhao, Li Zhang, Kening Sun^*, Hulin Li

^*Corresponding author for this work

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

7 Citations (Scopus)

Abstract

RuO₂·xH₂O nanorod arrays free-standing on Si wafers are prepared by an anodic aluminum oxide template assistant method. Pt nanograins in the size of 3-5 nm are deposited on the RuO₂· xH₂O nanorod arrays uniformly by a cool sputtering approach. Electrochemical measurements indicate that, the Pt@RuO₂· xH₂O nanorod arrays have larger electrochemical active areas (EAAs) and better poisoning resistant ability for methanol electro-oxidation, compared with Pt nanograins that deposited on Ti wafers directly (named Pt/Ti). The EAAs of Pt@RuO₂·xH₂O and Pt/Ti electrodes are 40.6 and 31.1 m² g^-1, respectively. The poisoning rate of Pt@RuO₂·xH₂O arrays is 8.9 × 10^-4% per second, much smaller than that of Pt/Ti electrodes (3.4 × 10 ^-3% per second).

Original language	English
Pages (from-to)	892-897
Number of pages	6
Journal	Journal of Power Sources
Volume	245
DOIs	https://doi.org/10.1016/j.jpowsour.2013.07.053
Publication status	Published - 2014
Externally published	Yes

Keywords

Anodic aluminum oxide template
Electro-catalysis
Nanorod array
Poisoning rate
Silicon wafer

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

Access to Document

10.1016/j.jpowsour.2013.07.053

Cite this

@article{21d6786b2770434d98daa08358db832a,

title = "Free-standing Pt@RuO2·xH2O nanorod arrays on Si wafers as electrodes for methanol electro-oxidation",

abstract = "RuO2·xH2O nanorod arrays free-standing on Si wafers are prepared by an anodic aluminum oxide template assistant method. Pt nanograins in the size of 3-5 nm are deposited on the RuO2· xH2O nanorod arrays uniformly by a cool sputtering approach. Electrochemical measurements indicate that, the Pt@RuO2· xH2O nanorod arrays have larger electrochemical active areas (EAAs) and better poisoning resistant ability for methanol electro-oxidation, compared with Pt nanograins that deposited on Ti wafers directly (named Pt/Ti). The EAAs of Pt@RuO2·xH2O and Pt/Ti electrodes are 40.6 and 31.1 m2 g-1, respectively. The poisoning rate of Pt@RuO2·xH2O arrays is 8.9 × 10-4\% per second, much smaller than that of Pt/Ti electrodes (3.4 × 10 -3\% per second).",

keywords = "Anodic aluminum oxide template, Electro-catalysis, Nanorod array, Poisoning rate, Silicon wafer",

author = "Guangyu Zhao and Li Zhang and Kening Sun and Hulin Li",

year = "2014",

doi = "10.1016/j.jpowsour.2013.07.053",

language = "English",

volume = "245",

pages = "892--897",

journal = "Journal of Power Sources",

issn = "0378-7753",

publisher = "Elsevier B.V.",

}

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T1 - Free-standing Pt@RuO2·xH2O nanorod arrays on Si wafers as electrodes for methanol electro-oxidation

AU - Zhao, Guangyu

AU - Zhang, Li

AU - Sun, Kening

AU - Li, Hulin

PY - 2014

Y1 - 2014

N2 - RuO2·xH2O nanorod arrays free-standing on Si wafers are prepared by an anodic aluminum oxide template assistant method. Pt nanograins in the size of 3-5 nm are deposited on the RuO2· xH2O nanorod arrays uniformly by a cool sputtering approach. Electrochemical measurements indicate that, the Pt@RuO2· xH2O nanorod arrays have larger electrochemical active areas (EAAs) and better poisoning resistant ability for methanol electro-oxidation, compared with Pt nanograins that deposited on Ti wafers directly (named Pt/Ti). The EAAs of Pt@RuO2·xH2O and Pt/Ti electrodes are 40.6 and 31.1 m2 g-1, respectively. The poisoning rate of Pt@RuO2·xH2O arrays is 8.9 × 10-4% per second, much smaller than that of Pt/Ti electrodes (3.4 × 10 -3% per second).

AB - RuO2·xH2O nanorod arrays free-standing on Si wafers are prepared by an anodic aluminum oxide template assistant method. Pt nanograins in the size of 3-5 nm are deposited on the RuO2· xH2O nanorod arrays uniformly by a cool sputtering approach. Electrochemical measurements indicate that, the Pt@RuO2· xH2O nanorod arrays have larger electrochemical active areas (EAAs) and better poisoning resistant ability for methanol electro-oxidation, compared with Pt nanograins that deposited on Ti wafers directly (named Pt/Ti). The EAAs of Pt@RuO2·xH2O and Pt/Ti electrodes are 40.6 and 31.1 m2 g-1, respectively. The poisoning rate of Pt@RuO2·xH2O arrays is 8.9 × 10-4% per second, much smaller than that of Pt/Ti electrodes (3.4 × 10 -3% per second).

KW - Anodic aluminum oxide template

KW - Electro-catalysis

KW - Nanorod array

KW - Poisoning rate

KW - Silicon wafer

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DO - 10.1016/j.jpowsour.2013.07.053

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