As mobile electronics continue to evolve, the need for
high-output, long-lasting rechargeable batteries has grown tremendously. In the
search for suitable materials from which to construct high energy density
batteries, one of the principal obstacles has been the provision of a suitable
electrolyte that exhibits the right combination of conductivity and ion
mobility, stability, and wide electrochemical window. Very few electrolytes have
been developed thus far that exhibit the above combination of performance
parameters. Despite significant research in the area, there remains a need for
improved electrolytes that can be easily incorporated into voltaic cells without
significant extra cost.
Researchers at Arizona State University have developed a new
class of viscous electrolytes which combine lithium salts with high molecular
weight anionic polymers. The resulting electrolytes are stable, highly
conductive, resist crystallization, and have a wide electrochemical window. As
such, they are excellent targets for use in rechargeable electrochemical devices
such as batteries.
This technology part of a large suite of electrolyte and
battery technologies developed at Arizona State University. Significant testing
has been completed, and the results have been published. At this time, AzTE is
seeking potential partners and licensees for this issued patent and related
technologies.
Potential Applications
- Primary and Secondary Batteries
- Photochromic Devices
- Solar Cells
Benefits and Advantages
- High Conductivity – exceptionally high conductivity at
temperatures of 100 degrees or lower (including room temperature).
- Cation Conductivity – avoids undesirable cell
polarization problems.
- Rubbery Consistency – permits the deformation of the
electrolyte as needed to accommodate volume changes during charging and
discharging cycles
- Wide electrochemical window – permits the utilization of
anode/cathode combinations which provide high voltages
- Good adherence to the electrode surfaces – prevents
mechanical/electrical problems that could otherwise develop during charging
and discharging cycles
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