Microtubular Fuel Cell with Ultrahigh Power Output per Footprint

Miao, S; He, S; Liang, M; Lin, G; Cai, B; Schmidt, OG

Microtubular Fuel Cell with Ultrahigh Power Output per Footprint

Miao, S He, S Liang, M Lin, G

Cai, B Schmidt, OG

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Publication Type:: Journal Article
Citation:: Advanced Materials, 2017, 29 (34)
Issue Date:: 2017-09-13

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Field	Value	Language
dc.contributor.author	Miao, S	en_US
dc.contributor.author	He, S	en_US
dc.contributor.author	Liang, M	en_US
dc.contributor.author	Lin, G https://orcid.org/0000-0001-9880-8478	en_US
dc.contributor.author	Cai, B	en_US
dc.contributor.author	Schmidt, OG	en_US
dc.date.issued	2017-09-13	en_US
dc.identifier.citation	Advanced Materials, 2017, 29 (34)	en_US
dc.identifier.issn	0935-9648	en_US
dc.identifier.uri	http://hdl.handle.net/10453/127939
dc.description.abstract	© 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim A novel realization of microtubular direct methanol fuel cells (µDMFC) with ultrahigh power output is reported by using “rolled-up” nanotechnology. The microtube (Pt-RuO2-RUMT) is prepared by rolling up Ru2O layers coated with magnetron-sputtered Pt nanoparticles (cat-NPs). The µDMFC is fabricated by embedding the tube in a fluidic cell. The footprint of per tube is as small as 1.5 × 10−4 cm2. A power density of ≈257 mW cm−2 is obtained, which is three orders of magnitude higher than the present microsized DFMCs. Atomic layer deposition technique is applied to alleviate the methanol crossover as well as improve stability of the tube, sustaining electrolyte flow for days. A laminar flow driven mechanism is proposed, and the kinetics of the fuel oxidation depends on a linear-diffusion-controlled process. The electrocatalytic performance on anode and cathode is studied by scanning both sides of the tube wall as an ex situ working electrode, respectively. This prototype µDFMC is extremely interesting for integration with micro- and nanoelectronics systems.	en_US
dc.relation.ispartof	Advanced Materials	en_US
dc.relation.isbasedon	10.1002/adma.201607046	en_US
dc.subject.classification	Nanoscience & Nanotechnology	en_US
dc.title	Microtubular Fuel Cell with Ultrahigh Power Output per Footprint	en_US
dc.type	Journal Article
utslib.citation.volume	34	en_US
utslib.citation.volume	29	en_US
utslib.for	0912 Materials Engineering	en_US
utslib.for	02 Physical Sciences	en_US
utslib.for	03 Chemical Sciences	en_US
utslib.for	09 Engineering	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Science
pubs.organisational-group	/University of Technology Sydney/Faculty of Science/School of Mathematical and Physical Sciences
pubs.organisational-group	/University of Technology Sydney/Strength - IBMD - Initiative for Biomedical Devices
utslib.copyright.status	closed_access
pubs.issue	34	en_US
pubs.publication-status	Published	en_US
pubs.volume	29	en_US

Abstract:

© 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim A novel realization of microtubular direct methanol fuel cells (µDMFC) with ultrahigh power output is reported by using “rolled-up” nanotechnology. The microtube (Pt-RuO2-RUMT) is prepared by rolling up Ru2O layers coated with magnetron-sputtered Pt nanoparticles (cat-NPs). The µDMFC is fabricated by embedding the tube in a fluidic cell. The footprint of per tube is as small as 1.5 × 10−4 cm2. A power density of ≈257 mW cm−2 is obtained, which is three orders of magnitude higher than the present microsized DFMCs. Atomic layer deposition technique is applied to alleviate the methanol crossover as well as improve stability of the tube, sustaining electrolyte flow for days. A laminar flow driven mechanism is proposed, and the kinetics of the fuel oxidation depends on a linear-diffusion-controlled process. The electrocatalytic performance on anode and cathode is studied by scanning both sides of the tube wall as an ex situ working electrode, respectively. This prototype µDFMC is extremely interesting for integration with micro- and nanoelectronics systems.

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http://hdl.handle.net/10453/127939