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A microstructured cathode for fuel cell with self-regulated O2 bubble creation and consumption

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2 Author(s)
Hur, J.I. ; Mech. & Aerosp. Eng. Dept., Univ. of California, Los Angeles, Los Angeles, CA, USA ; Kim, C.-J.C.J.

We introduce a monolithic cathode that self-regulates oxygen supply, ideally complementing the recently developed monolithic anode that self-pumps the fuel. Developed is a microstructured cathode that generates oxygen, consumes generated oxygen bubbles as needed, and stops the generation when not consumed, all in a self-regulating fashion. Cyclic voltammetry confirms that the cathode is capable of reducing oxygen even in the presence of simulating a mixed-reactant condition. Half-cell tests show reasonable current outputs, suggesting a complete (full) fuel cell of no moving parts is feasible.

Published in:

Micro Electro Mechanical Systems (MEMS), 2012 IEEE 25th International Conference on

Date of Conference:

Jan. 29 2012-Feb. 2 2012