Swiss rechargeable and biodegradable 3D printing paper batteries come out

Researchers at the Swiss Federal Laboratory of Materials Science and Technology have invented a paper battery that can be manufactured by 3D Printing. It can be recharged and recycled, and its materials are all environmentally friendly and degradable-just two months after throwing in the compost material. Can be completely decomposed.

According to the research, using a 3D printer, four layers of materials were printed in sequence: a soft lining, a conductive layer, an electrode, and an electrolyte layer. Then the four layers of material are sandwiched like a sandwich, with the electrolyte layer in the middle layer-a practical battery is made. The test battery printed by the researcher in the laboratory has enough power to power a digital clock for several hours, and has a charge-discharge life of thousands of times. It is not afraid of low temperatures, and can withstand physical shocks and squeezing. According to the research, the better advantage is that when you don’t need it, you can just throw it away and leave it to nature to degrade it. The researchers left it in the compost environment. After two months, except for some carbon residue, all other materials were decomposed.

Lead researcher Gustav Nystrm said: “This kind of battery can be quickly charged with an electromagnetic field, and it can power devices such as sensors and micro-transmitters for several hours.” The researchers predict that this battery will be very fast. There will be broad application prospects in the Internet of Things (IoT). For example, you can check the contents of the package during transportation; in agriculture, you can power the environmental monitor. When the battery is no longer needed, there is no need to send someone to collect and dispose of it. It is harmless to stay in the natural environment, and they will degrade by themselves. . In addition, this battery is also very suitable for use in various point of care testing equipment that has been rapidly developed in recent years, such as small equipment that is placed on the bedside of a diabetic patient to automatically detect physical indicators. 

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