Scientists at the University of Iowa have developed a lithium-ion battery that is completely biodegradable after use. The presented sample is designed to power an electronic device for 15 minutes. A spent battery dissolves within 30 minutes after immersion in water.
The eight-layer miniature battery, including the anode, cathode and electrolyte, is completely dissolved after use thanks to the alcohol-containing polymer. Non-degradable nanoparticles are dispersed with the environment and pose no threat.
Such power sources are planned to be built into implants that cannot be removed from the patient's body, because after the resource is used up they will dissolve without harming the body. Also, self-destructing batteries will be indispensable in various electronic devices with a limited time of use.
Disposal of used batteries and accumulators requires significant material costs, and the use of self-degradable batteries will reduce them. This development will allow you to find a compromise between the operating time of the power supply, its capacity and environmental safety.