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Cake rusk crumbs used to create supercapacitors

Press Trust of India  |  Chennai 

Scientists have used cake leftovers to develop low-cost supercapacitors -- a electronic component that is used to store charge and has a wide range of applications in

Owing to the ever growing demand, electrochemical storage systems with higher and power densities such as lithium-ion batteries and supercapacitors have attracted tremendous attention in recent years.

The researchers from and Technology in Chennai wanted to create low cost alternatives by recycling waste materials and converting them into products that have high demand.

For a study published in the journal Microporous and Mesoporous Materials, they collected waste cake crumbs from local bakeries and heated them in to obtain highly porous carbon with very high surface area.

"The carbon materials obtained from Indian cake have very high porosity, surface area and pore volumes which are superior than the other waste materials investigated," M Sasidharan, a at SRM University, told

"The above attributes are very essential for percolation of electrolyte, and high charge storage in any electrical device," said Sasidharan, of the study.

Supercapacitors are devices that can store and deliver charge much faster than batteries, and tolerate many more charge and discharge cycles than rechargeable batteries.

It has widespread application from a range of devices such as smartphones, laptops and They are also used as voltage stabilisers, in medical devices and as

The device fabricated by the researchers can light up few LED bulbs. In future, the materials may be extended to high end applications, researchers said.

said that the research may bring down the cost of supercapacitors by 70 per cent, since the raw materials are inexpensive.

Any which provide carbon materials with high porosity and surface area can be considered for this application, researchers said.

"Right now we are focusing on different farm wastes which can give better performance than the already studied rice husk, bagasse waste, waste tea, waste tire, puffed rice etc," said.

The researchers are currently working on scaling up the production process to optimise it for commercial applications.

(This story has not been edited by Business Standard staff and is auto-generated from a syndicated feed.)

First Published: Tue, October 09 2018. 11:45 IST