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THREE-DIMENSIONAL (3D) ELECTRODE ARCHITECTURE FOR A MICROBATTERY

United States Patent Application

20160126558
A1
View the Complete Application at the US Patent & Trademark Office
A three-dimensional (3D) electrode architecture for a microbattery includes an anode structure comprising one or more anode digits and a cathode structure comprising one or more cathode digits, the anode digits being positioned alternately with the cathode digits in an interdigitated configuration on a substrate, where each of the anode digits has a width w.sub.a and each of the cathode digits has a width w.sub.c. Each of the anode digits comprises an anode material deposited on a first current collector and extending to a height h above the first current collector, and each of the cathode digits comprises a cathode material deposited on a second current collector and extending to a height h, above the second current collector. A height-to-width aspect ratio h.sub.a/w.sub.a of the anode structure and a height-to-width aspect ratio h.sub.c/w.sub.c of the cathode structure are at least about 2.
Lewis, Jennifer (Cambridge, MA), Dillon, Shen (Champaign, IL), Sun, Ke (Urbana, IL), Ahn, Bok Yeop (Cambridge, MA), Wei, Teng-Sing (Somerville, MA)
14/ 890,072
May 1, 2014
FEDERALLY FUNDED RESEARCH OR DEVELOPMENT [0001] The invention described herein was made with government support under contract number DMI-0749028 awarded by the National Science Foundation and under contract numbers DE-SC0001293 awarded by the Department of Energy. The U.S. Government has certain rights in this invention.