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US 12,755,987 B2Granted
Reactant-transport engineering for high-power direct liquid-fuel/oxidant fuel cells
AssigneeWashington University
InventorsShrihari Sankarasubramanian, Zhongyang Wang, Vijay K. Ramani
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Abstract
Described herein are flow field plates comprising a flow field pattern and fuel cells comprising the flow field plates comprising a flow field pattern. The flow field plates and fuel cells are applicable to fuel cells and stacks over a range of sizes and fuel/oxidant combinations as long as the fuel and oxidant are incompressible liquids.
Claims20
A flow field plate comprising:
- a flow field pattern;
- wherein the flow field plate is configured to receive an incompressible liquid fuel stream or an incompressible liquid oxidant stream;
- wherein the flow field plate is configured to operate at a Reynolds number in the range of from about 300 to about 1200;
- wherein the flow field plate is configured to operate at a Damkohler number in the range of from about 200 to about 600;
- and
- wherein the flow field plate is configured to produce H2 bubbles and remove adsorbed H2 bubbles before they react.
3 more elements
A fuel cell comprising:
- an anode comprising
- a first flow field plate comprising a flow field pattern;
- and
- an incompressible liquid fuel stream;
- wherein the first flow field plate is configured to operate at a Reynolds number in the range of from about 300 to about 1200;
- and
- wherein the first flow field plate is configured to operate at a Damkohler number in the range of from about 200 to about 600;
- and
- a cathode comprising
- a second flow field plate comprising a flow field pattern;
- and
- an incompressible liquid oxidant stream;
- wherein the second flow field plate is configured to operate at a Reynolds number in the range of from about 300 to about 1200;
- and
- wherein the second flow field plate is configured to operate at a Damkohler number in the range of from about 200 to about 600;
- and
- wherein the first flow field plate and/or the second flow field plate is configured to produce H2 bubbles and remove adsorbed H2 bubbles before they react.
14 more elements
A method of using a fuel cell comprising:
- an anode comprising
- a first flow field plate comprising a flow field pattern;
- and
- an incompressible liquid fuel stream;
- wherein the first flow field plate is configured to operate at a Reynolds number in the range of from about 300 to about 1200;
- and
- wherein the first flow field plate is configured to operate at a Damkohler number in the range of from about 200 to about 600;
- and
- a cathode comprising
- a second flow field plate comprising a flow field pattern;
- and
- an incompressible liquid oxidant stream;
- wherein the second flow field plate is configured to operate at a Reynolds number in the range of from about 300 to about 1200;
- and
- wherein the second flow field plate is configured to operate at a Damkohler number in the range of from about 200 to about 600,
- the method comprising using the fuel cell in a propulsion system of a vehicle;
- wherein the first flow field plate and/or the second flow field plate is configured to produce H2 bubbles and remove adsorbed H2 bubbles before they react.
14 more elements
Dependencies are inferred from the claim text.