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Salt-templated platinum–palladium porous macrobeam synthesis

Published online by Cambridge University Press:  05 November 2018

Fred. J. Burpo ,
Enoch A. Nagelli ,
Alexander N. Mitropoulos ,
Stephen F. Bartolucci ,
Joshua P. McClure ,
David R. Baker ,
Anchor R. Losch  and
Deryn D. Chu
Fred. J. Burpo*
Affiliation:
Department of Chemistry and Life Science, United States Military Academy, West Point, NY 10996, USA
Enoch A. Nagelli
Affiliation:
Department of Chemistry and Life Science, United States Military Academy, West Point, NY 10996, USA
Alexander N. Mitropoulos
Affiliation:
Department of Mathematical Sciences, Department of Chemistry and Life Science, United States Military Academy, West Point, NY 10996, USA
Stephen F. Bartolucci
Affiliation:
United States Army Armaments Research, Development and Engineering Center, Watervliet, NY 12189, USA
Joshua P. McClure
Affiliation:
United States Army Research Laboratory-Sensors and Electron Devices Directorate, Adelphi, MD 20783, USA
David R. Baker
Affiliation:
United States Army Research Laboratory-Sensors and Electron Devices Directorate, Adelphi, MD 20783, USA
Anchor R. Losch
Affiliation:
Department of Chemistry and Life Science, United States Military Academy, West Point, NY 10996, USA
Deryn D. Chu
Affiliation:
United States Army Research Laboratory-Sensors and Electron Devices Directorate, Adelphi, MD 20783, USA
*
Address all correspondence to Fred J. Burpo at [email protected]
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Abstract

Here we present the synthesis of porous platinum–palladium macrobeams templated from high aspect ratio Magnus’ salt needle derivatives. The combination of [PtCl4]2− and/or [PdCl4]2− with [Pt(NH3)4]2+ ions results in salt needles ranging from 15 to 300 µm in length. Electrochemical reduction of the salt templates results in porous macrobeams with a square cross-section. Porous side wall texture and elemental composition was controlled with initial platinum to palladium salt ratio. Macrobeam free-standing films exhibited a specific capacitance up to 11.73 F/g and a solvent accessible surface area of 26.6 m2/g. These salt-templated porous platinum–palladium macrobeams offer a promising material for fuel cell catalysis.

Type
Research Letters
Information
MRS Communications , Volume 9 , Issue 1 , March 2019 , pp. 280 - 287
Copyright
Copyright © Materials Research Society 2018 

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Footnotes

*

These authors contributed equally.

References

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