CORRUGATED FUEL ELECTRODE
First Claim
1. A rechargeable electrochemical cell comprising:
- a fuel electrode comprising;
a) a first corrugated portion formed of electrically conductive material, the first corrugated portion having a first corrugation axis and comprising a plurality of apertures therethrough;
b) a second corrugated portion formed of electrically conductive material, the second corrugated portion having a second corrugation axis that is offset from said first corrugation axis and comprising a plurality of apertures extending therethrough; and
c) electrode attachments attaching the first corrugated portion and the second corrugated portion to each other;
a cathode;
an ionically conductive medium communicating the fuel electrode and the cathode; and
a metal fuel for electrodeposition on the corrugated portions of the fuel electrode during charging and oxidation at the fuel electrode during discharging.
4 Assignments
0 Petitions
Accused Products
Abstract
A fuel electrode incorporates a first and second corrugated portion that are attached to each other at offset angles respect to their corrugation axis and therefore reinforce each other. A first corrugated portion may extend orthogonally with respect to a second corrugated portion. The first and second corrugated portions may be formed from metal wire and may therefore have a very high volumetric void fraction and a high surface area to volume ratio (sa/vol). In addition, the strands of the wire may be selected to enable high conductivity to the current collectors while maximizing the sa/vol. In addition, the shape of the corrugation, including the period distance, amplitude and geometry may be selected with respect to the stiffness requirements and electrochemical cell application factors. The first and second corrugated portions may be calendared or crushed to reduce thickness of the fuel electrode.
-
Citations
34 Claims
-
1. A rechargeable electrochemical cell comprising:
-
a fuel electrode comprising; a) a first corrugated portion formed of electrically conductive material, the first corrugated portion having a first corrugation axis and comprising a plurality of apertures therethrough; b) a second corrugated portion formed of electrically conductive material, the second corrugated portion having a second corrugation axis that is offset from said first corrugation axis and comprising a plurality of apertures extending therethrough; and c) electrode attachments attaching the first corrugated portion and the second corrugated portion to each other; a cathode; an ionically conductive medium communicating the fuel electrode and the cathode; and a metal fuel for electrodeposition on the corrugated portions of the fuel electrode during charging and oxidation at the fuel electrode during discharging. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
-
-
27. A fuel electrode for a rechargeable electrochemical cell in which a metal fuel is electrodeposited the fuel electrode during charging and oxidized at the fuel electrode during discharging, comprising:
-
a) a first corrugated portion formed of electrically conductive material, the first corrugated portion having a first corrugation axis and comprising a plurality of apertures therethrough; b) a second corrugated portion formed of electrically conductive material, the second corrugated portion having a second corrugation axis that is offset from said first corrugation axis and comprising a plurality of apertures extending therethrough; and c) electrode attachments attaching the first corrugated portion and the second corrugated portion to each other; wherein the electroconductive material of each corrugated portion has a smooth continuous outer surface with essentially no internal surface area and receives the electrodeposited fuel thereon during charging. - View Dependent Claims (28, 29, 30, 31, 32, 33, 34)
-
Specification