Researchers at the University of California have discovered how to build a plastic polymer structure of tiny rods about one half millimeter high, which are hardened by contact with light. Heating to 900 0C removes the hydrogen atoms leaving a shrunken carbon version of the original plastic structure. Battery structures are then assembled with interconnecting wiring, and electrolytes. The resultant structure has many positive and negative terminals. Cheaper surface materials than the present silicon must be found to make practical batteries.
American Assn. of Advancement of Science, February 17, 2004
To add the battery on to an integrated electronic circuit or a MEMS device or sensor could make the device totally self contained. A method for placing thin film cathode materials with magnetron sputtering has been developed to reduce process temperatures from 700 0C to 300 OC. After sputtering of active materials and electrolyte placements, lithium metal anodes are evaporated onto the device. The method is described in Patent # 6,558,836.
NASA Tech Briefs, March 2004
(September, 02) Valence Technology, Inc. named on Inc. Magazine’s “Innovation 50” list. Ranked 11th on the list, the company received the award for the number of patents it received between 1996 and 2001.