The new zinc battery is 10 times more powerful than modern lithium-ion
Researchers have developed a prototype of a flexible zinc battery made of silver and zinc oxide, the capacity of which is 10 times higher than that of modern lithium-ion devices.
Zinc and silver oxide batteries for a long time are considered an alternative to lithium-ion designs due to their high energy density and safety. However, they still have not found widespread use due to instability that shortens their lifespan. A team from the University of California at San Diego was able to solve this problem with a new cathode material..
To improve the electrochemical stability and conductivity of the battery, the scientists used a lead oxide coating while reducing the AC resistance or electrical impedance in parallel. They then developed a special ink that, using screen printing, made it possible to create flexible battery cells by applying them to a polymer film with a melting point of more than 200 °C.
The battery produced in this way has a capacity of 50 mA per cm2, which is 10-20 times more than that of a typical lithium-ion storage device. According to the team, with the same size, its capacity will be 5-10 times higher than existing counterparts..
Researchers tested the performance of the new battery on a flexible display with Bluetooth modules. After 80 charge / discharge cycles, no serious signs of capacity loss were found, even despite repeated deformations.
Such batteries can help advance the development of flexible electronics, wearable devices, soft robotics and the Internet of Things..
We also recently reported on a discovery by scientists from St. Petersburg that could improve the efficiency of sodium ion batteries..
text: Ilya Bauer, photo and video: University of California, San Diego