(777h) Electrodeposition As a Route Toward Fabrication of Three-Dimensional Electrochemical Energy Storage Devices

Electrodeposition as a Route Toward Fabrication of Three-Dimensional Electrochemical
Energy Storage Devices

Derek C. Johnson, Matthew T. Rawls, and
Amy L. Prieto

Chemistry Department, Colorado State
University

Prieto Battery, Inc., Fort Collins, CO

                Lithium-ion
batteries have become the primary energy choice for low power applications, and
are now being sought after for high power applications in hybrid electric
vehicles (HEV), plug-in hybrid electric vehicles (PHEV), and electric vehicles
(EV).  To meet the performance
requirements for high power density applications, the short comings that have
confined the use of conventional lithium-ion batteries to low-power
applications needs to be addressed.  To
address these problems, we utilize electrodeposition as the main synthetic tool
for the fabrication of a three-dimensional (3D) solid-state lithium-ion
battery.  The ultimate goal is to use
this synthetic technique to fabricate a solid-state battery with a significantly
higher power density and longer cycle life when compared to traditional
lithium-ion batteries containing a liquid electrolyte or a polymer gel
electrolyte.  Electrodeposition is used
to synthesize high surface area anodes that do not require additional
conducting materials such as graphite or polymer binders to retain structural
integrity.  Since the anode is highly
conducting, it is subsequently used as the substrate to which a solid-state
electrolyte is directly electrochemically deposited.  An aqueous based
cathode slurry is then applied to the solid-state electrolyte to complete the
cell.  Battery performance of these
composite structures will be presented.