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Proceedings Paper

Fabrication and characterization of a fuel flexible micro-reformer fully integrated in silicon for micro-solid oxide fuel cell applications
Author(s): D. Pla; M. Salleras; I. Garbayo; A. Morata; N. Sabaté; N. J. Divins; J. Llorca; A. Tarancón
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Paper Abstract

A novel design of a fuel-flexible micro-reactor for hydrogen generation from ethanol and methane is proposed in this work. The micro-reactor is fully fabricated with mainstream MEMS technology and consists of an array of more than 20000 through-silicon vertically aligned micro-channels per cm2 of 50 μm in diameter. Due to this unique configuration, the micro-reformer presents a total surface per projected area of 16 cm2/cm2 and per volume of 320 cm2/cm3. The active surface of the micro-reformer, i.e. the walls of the micro-channels, is homogenously coated with a thin film of Rh- Pd/CeO2 catalyst. Excellent steam reforming of ethanol and dry reforming of methane are presented with hydrogen production rates above 3 mL/min·cm2 and hydrogen selectivity of ca. 50% on a dry basis at operations conditions suitable for application in micro-solid oxide fuel cells (micro-SOFCs), i.e. 700-800ºC and fuel flows of 0.02 mLL/min for ethanol and 36 mLG/min for methane (corresponding to a system able to produce one electrical watt).

Paper Details

Date Published: 21 May 2015
PDF: 9 pages
Proc. SPIE 9517, Smart Sensors, Actuators, and MEMS VII; and Cyber Physical Systems, 95172D (21 May 2015); doi: 10.1117/12.2178860
Show Author Affiliations
D. Pla, Institut de Recerca en Energia de Catalunya (Spain)
M. Salleras, Instituto de Microelectrónica de Barcelona, Ctr. Nacional de Microelectrónica, CSIC (Spain)
I. Garbayo, Institut de Recerca en Energia de Catalunya (Spain)
A. Morata, Institut de Recerca en Energia de Catalunya (Spain)
N. Sabaté, Instituto de Microelectrónica de Barcelona, Ctr. Nacional de Microelectrónica, CSIC (Spain)
N. J. Divins, Univ. Politècnica de Catalunya (Spain)
J. Llorca, Univ. Politècnica de Catalunya (Spain)
A. Tarancón, Institut de Recerca en Energia de Catalunya (Spain)


Published in SPIE Proceedings Vol. 9517:
Smart Sensors, Actuators, and MEMS VII; and Cyber Physical Systems
José Luis Sánchez-Rojas; Riccardo Brama, Editor(s)

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