Engineering researchers at Canada’s McMaster University are turning trees into devices, or capacitors, that can store electrical energy more efficiently and longer to power electric devices from smart watches to hybrid cars.
The research was published in the new issue of the journal Advanced Materials.
Scientists are using cellulose, an organic material found in plants, bacteria, algae and trees, to build more efficient and longer-lasting energy storage devices, or capacitors. This development paves the way for lightweight, flexible and high-power electronic devices such as wearable devices, portable power supplies, hybrid and electric vehicles.
“The ultimate goal of this research is to find sustainable ways to provide efficient power for current and future environmentally friendly technologies,” said Emily Claxton, assistant professor of chemical engineering at the university.
Cellulose has the advantage of providing high strength and flexibility for many applications, making nanocellulose-based materials very attractive. Cranston demonstrated an improved three-dimensional energy storage device built by trapping functional nanoparticles within nanocellulose foam walls, the Physicist Organization reported recently.
The foam is produced in a simplified and rapid one-step production process. This kind of nanocellulose looks like long-grained rice, but it’s all in nanometer size.
In the new device, these “rices” are glued together to form a mesh structure with lots of open space at random points, giving the material extremely light properties.
It can be used to produce more sustainable capacitors with higher power densities and faster charging capabilities than charging capabilities.
In addition, lightweight and high power density capacitors have considerable appeal for the development of hybrid and electric vehicles.
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