A thermally self-sustained micro-power plant with integrated micro-solid oxide fuel cells, micro-reformer and functional micro-fluidic carrier

Autor: Anja Bieberle-Hütter, Majid Nabavi, Barbara Scherrer, Julia Martynczuk, Paul Muralt, Philippe Niedermann, Valentin Straessle, Peter Heeb, René Tölke, Thomas Maeder, Dimos Poulikakos, Alex Dommann, C.A.P. Muller, Anna Evans, Michel Prestat, Bo Jiang, Henning Galinski, Alejandro J. Santis-Alvarez, Ludwig J. Gauckler
Předmět:
Hydrogen
thermique
packaging
02 engineering and technology
7. Clean energy
chemistry.chemical_compound
solid-oxide fuel cells
fluidique
0202 electrical engineering
electronic engineering
information engineering
thermal management
SOFC
piles à combustible à oxyde solide
microsystems
couches épaisses
Waste management
ONEBAT
021001 nanoscience & nanotechnology
µ-SOFC
MEMS
Membrane
demonstrator
thin films
microfluidique
0210 nano-technology
chemical microreactors
fluidics
Exothermic reaction
microréacteurs chimiques
Materials science
Power station
LTCC
couches minces
020209 energy
Oxide
microfluidics
Energy Engineering and Power Technology
chemistry.chemical_element
démonstrateur
oxydation partielle catalytique
Fuel gas
Gas composition
reformage butane
Electrical and Electronic Engineering
Physical and Theoretical Chemistry
Renewable Energy
Sustainability and the Environment
catalytic partial oxidation
Atmospheric temperature range
butane reforming
microsystèmes
chemistry
Chemical engineering
thick-film technology
Zdroj: Journal of Power Sources, 258, 434-440
Popis: Low temperature micro-solid oxide fuel cell (micro-SOFC) systems are an attractive alternative power source for small-size portable electronic devices due to their high energy efficiency and density. Here, we report on a thermally self-sustainable reformer micro-SOFC assembly. The device consists of a micro-reformer bonded to a silicon chip containing 30 micro-SOFC membranes and a functional glass carrier with gas channels and screen-printed heaters for start-up. Thermal independence of the device from the externally powered heater is achieved by exothermic reforming reactions above 470 °C. The reforming reaction and the fuel gas flow rate of the n-butane/air gas mixture controls the operation temperature and gas composition on the micro-SOFC membrane. In the temperature range between 505 °C and 570 °C, the gas composition after the micro-reformer consists of 12 vol.% to 28 vol.% H2. An open-circuit voltage of 1.0 V and maximum power density of 47 mW cm−2 at 565 °C is achieved with the on-chip produced hydrogen at the micro-SOFC membranes.
Databáze: OpenAIRE
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