【New Fiber】Singapore University of Science and Technology Develops Biodegradable Cellulose Paper Batteries

Researchers at Nanyang Technological University, Singapore (NTU Singapore) have developed a non-toxic zinc battery with electrodes screen-printed on both sides of cellulose paper reinforced with hydrogels, which will not interrupt power even when bent or twisted. It can be completely biodegraded by burying it in the soil for only 1 month after the power is exhausted, and it is expected to become an innovative power source for elastic and wearable electronic devices.

 

According to a report by Electronics360, when the battery developed by NTU is decomposed, the constituent materials of the electrode will be released into the environment, the nickel or manganese of the cathode will maintain the form of oxide or hydroxide, and the zinc of the anode will be naturally oxidized to non-toxic hydroxide. thing. Next, the NTU research team will demonstrate the integrated application of the printed paper battery with other printed electronic devices, electronic skins, and other energy storage systems.

 

NTU was demonstrated with a battery printed on 4 cm square cellulose paper. The first experiment showed that the battery could power a small electric fan for at least 45 minutes, and the second experiment showed that it could light up light-emitting diodes (LEDs) even when Part of the battery is removed to maintain power. The ability to bend and twist makes NTU's battery suitable for use in foldable smartphones and biomedical sensors that monitor physical conditions.

 

The battery developed by NTU does not need to be covered with aluminum or plastic shell, and can provide higher power capacity in a smaller volume. Friendly elements help reduce electronic waste, and compared with ordinary batteries, its manufacturing process is simpler and the manufacturing cost is lower. It can produce a large piece of battery at one time and then cut it into multiple pieces according to the shape and size required without affecting the power supply. efficiency. (Source: digitimes0104) ☺