Engineering researchers at McMaster University in Canada are turning trees into more efficient, longer-lasting devices or capacitors for storing electrical energy to drive electrical devices from smart watches to hybrid cars. The study was published in the latest issue of Advanced Materials magazine.
Scientists are using organic cellulose in plants, bacteria, algae, and trees to create more efficient, longer-lasting energy storage devices or capacitors. This development has paved the way for lightweight, flexible and high-power electronic devices such as wearable devices, portable power supplies, hybrid cars and electric vehicles.
Emily Kraston, assistant professor of chemical engineering at the university, said: "The ultimate goal of this study is to find sustainable power for current and future environmental technologies."
Cellulose has the advantage of providing high strength and flexibility for many applications, and has great appeal for nanocellulose-based materials. According to a recent report by the Physicist Organization Network, Cranston demonstrated an improved three-dimensional energy storage device constructed by capturing functional nano-particles within a nano-cellulose foam wall.
The foam is completed in a simplified and rapid one-step production process. This nanocellulose shape looks like long-grained rice, but it is all nano-sized. In the new facility, these "rices" are glued together and form a mesh structure with a lot of open space at random points, so this material is extremely lightweight. Compared to charging capacity, it can be used to produce more sustainable capacitors with higher power density and rapid chargeability.
In addition, lightweight and high power density capacitors have considerable appeal for the development of hybrid and electric vehicles. (Reporter Hualing)
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