Zn-based Hybrid Batteries for Flexible Electronics
Existing Zn-air batteries show poor efficiency due to high charge voltage and low discharge voltage. We developed the new technology which perfectly integrates the advantages of both Zn-air batteries and Zn-metal batteries. By developing nanostructured Zn-electrode and Ag-RuO2/carbon nanotube air electrode or Co3O4/carbon cloth air electrode, it can successfully increases the discharge voltage and decreases the charge voltage, leading to higher efficiency (over 70%) and higher discharge voltage (>1.8V) than existing Zn-air batteries. In addition, the Zn-dendrite formation is significantly minimized, leading to excellent cycling stability. By replacing the liquid electrolyte by the gel electrolyte, we developed flexible Zn-air batteries for powering flexible electronics.
This hybrid battery is more efficient, more durable, cheaper and safe for use and can have various applications, such as power sources for portable electronics (mobile phones, notebook, digital watches) and wearable sensors, etc.