Electrochemical components employing polysiloxane-derived binders
| DWPI Title: Battery component structure comprises current collector, electrode layer containing electrode material embedded in processed polysiloxane resin which is oxidized resin of polysiloxane formed by methyl trichlorosilane/short-chain alcohol |
| Abstract: A processed polysiloxane resin binder for use in electrochemical components and the method for fabricating components with the binder. The binder comprises processed polysiloxane resin that is partially oxidized and retains some of its methyl groups following partial oxidation. The binder is suitable for use in electrodes of various types, separators in electrochemical devices, primary lithium batteries, electrolytic capacitors, electrochemical capacitors, fuel cells and sensors. |
| Use: As battery component structure used as binder in electrolytic capacitor, electrochemical capacitors, for batteries, electrolytic capacitors, electrochemical capacitors, fuel cells, and sensors. |
| Advantage: The battery component structure has improved power density and energy density from conformal ultra-thin electrodes that are bonded to their current collectors and conformal ultra-thin separators that are bonded to the electrodes. Production cost reduction by elimination of labor-intensive, pellet processing. Instead, any or all components (anode, cathode and separator) can be fabricated using single-layer or multi-layer casting technologies. Bonded, monolithic electrodes replace sequential, stepwise stacking of separate current collector, anode, separator, and cathode pellets. Processing and assembly can be automated using casting technology. In current pellet technology, the molten salt serves as the electrolyte and as the binder for the separator. The present battery component structure utilizes thermally and electrochemically stable bonding agents to form very robust monolithic components (cathode, separator and/or anode) which can withstand high g-forces. The bonded structures of various embodiments also withstand high thermal shock. Collapse and plastic flow of the components is reduced compared to the pellet components. |
| Novelty: A battery component structure comprises a current collector (10), electrode layer (11) in electrical contact with the current collector, where electrode layer comprising electrode material embedded in a processed polysiloxane resin, where the processed polysiloxane resin is a partially oxidized resin of a polysiloxane formed by reaction of a mixture comprising methyl trichlorosilane, dimethyl dichlorosilane, and a short-chain alcohol. |
| Filed: 12/20/2010 |
| Application Number: US2010973342A |
| Tech ID: SD 11577.1 |
| This invention was made with Government support under Contract No. DE-NA0003525 awarded by the United States Department of Energy/National Nuclear Security Administration. The Government has certain rights in the invention. |
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