AEI 64 |
| Nanocomposites of three-dimensionally interpenetrating nanostructured electrode and solid electrolyte phases yield energy- and power-dense solid-state electrochemical cells with minimal areal footprints. Performance per cm2 is a critical metric when powering MEMS devices and related applications, such as distributed sensors/smart dust. Carbon nanoarchitectures prepared from resorcinol–formaldehyde-based ultraporous polymers and vapor-deposited aromatic precursors provide large electrochemical interfaces and interconnected pore networks in the mesopore and macropore size range, thereby doubling as a physical platform and Li-ion anode for sequential assembly of microelectrochemical cells. Ultrathin, conformal poly(phenylene oxide)-based coatings are electrodeposited onto all electrifiable surfaces of the electrode nanoarchitectures in order to passivate electrode surfaces with dielectric barriers while simultaneously creating ionic pathways between electrodes. The underlying carbon framework is electrochemically lithiated through the nanoscopic polymer film. Disordered, anhydrous RuO2 is cryogenically deposited via the autocatalytic decomposition of RuO4 onto electron-dense moieties of the polymer film, creating a self-wired, interpenetrating network that functions simultaneously as a Li-ion cathode and a distributed current collector. |
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Academic Employment Initiative
8:00 PM-10:00 PM, Monday, August 20, 2007 BCEC -- Exhibit Hall - B2, Sci-Mix
Academic Employment Initiative |