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AssigneeThe Regents of the University of California
InventorsSteven T. Mayer, John H. Feikert, James L. Kachmitter, Richard W. Pekala
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An improved multi-cell electrochemical energy storage device, such as a battery, fuel cell, or double layer capacitor using a cell separator which allows cells to be stacked and interconnected with low electrical resistance and high reliability while maximizing packaging efficiency. By adding repeating cells, higher voltages can be obtained. The cell separator is formed by applying an organic adhesive on opposing surfaces of adjacent carbon electrodes or surfaces of aerogel electrodes of a pair of adjacent cells prior to or after pyrolysis thereof to form carbon aerogel electrodes. The cell separator is electronically conductive, but ionically isolating, preventing an electrolytic conduction path between adjacent cells in the stack.
In an energy storage device having at least two cells, with each cell having at least one carbon electrode, the improvement comprising:
A multi-cell electrochemical energy storage device, comprising:
The multi-cell energy storage device of claim, 15, wherein aerogel composite electrode is formed by infiltrating the resorcinol-formaldehyde sol into carbon paper, drying, and pyrolyzing to form a fiber reinforced carbon aerogel composite.
Dependencies are inferred from the claim text.