Carbon Foam To Help Make Long Lasting Batteries

Nov 18, 2011 No Comments by

Scientists at Michigan University are working to develop batteries that could last longer and are environment friendly. Their battery is actually a combination of capacitor and battery (half portion stores charge chemically and other one acts like a capacitor).

The presence of two types of charge holding mechanisms enhances the storage and prevents leakage of charges as the negatively charged plate of capacitor is attracted to anode of of battery. This also doubles the amount of energy that can be delivered.

Earlier nickel based compound was used as current collector and supporting battery structure. However, researchers hit upon idea of using carbon foam which is lighter, cheaper and more effective current collector, thus effectively reducing the amount of charge that would otherwise be transferred in same period of time by Nickel collector.

Nickel will be used as scaffolding for battery structure with carbon foam filling the voids. End product is altogether more efficient, green and performing which can be seen from the fact that 127,000 cycles of charging can be carried out with this capacitor-battery combo. Furthermore, the foam can be made of biomass, thus eliminating hazardous chemicals that are used in battery-making.

Source: Michigan State University

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