The energy capacity of today batteries is a limitation in usage of all portable devices from cell phones to hearing aid devices.
The possible current density for Al/Air battery is at the limit of 1.5mA/cm2. Additionally, initial potential drop at around 4.5hours from the current activation occurs, may is due to layer formation on the Al surface. This layer, with resistivity higher than Al, dissolves during the current application.
Utilization of oligoflourogenate based electrolyte in the system supports both the high currents at the air electrode cathode and the high dissolution rates at the aluminum anode. Moreover, the total corrosion rate of aluminum in this specific electrolyte considered to be lower than the corrosion in more familiar alkaline solutions. This allows improved discharge current densities with relatively low corrosion currents.
- High capacity
- High current density
Applications and Opportunities
- Battery for hearing aids, sensors and other portable devices