| Brigham Young University, in collaboration with Bipolar
Technologies Corporation, has developed a new class of microbatteries designed
for use with autonomous microsensors and other autonomous microsystems.
These batteries offer excellent power performance with a power density
>75 mW/cm2 (>1000W/kg), comparable to most capacitor technologies.
These thick film microbatteries also offer a charge storage capacity of
approximately 1 mA hr/cm2 (based on the cathode area), considerably higher
than that of a typical thin film microbattery. Cells are made with
microfabrication techniques that permit fabrication of a large number of
cells simultaneously on a single substrate. These cells are considerably
thicker than the solid-state lithium cells described in the literature;
however, they are still very thin relative to cells such as button cells
that are not microfabricated. |
| Battery Characteristics |
| Small physical size |
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< 0.1 cm2, <100 um in thickness. |
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| High power per volume and area |
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| High capacity per volume and area |
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| Rechargable |
| Long Cycle Life |
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Demonstrated over 2000 cycles |
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