Researchers develop improved supercapacitors based on dual-functional porous graphene

Conventional electrolytes used in commercial supercapacitors can operate between 2.5–3.0 V and begin to decompose or face safety issues (such as flammability) at higher voltages. The team’s new design was able to reach 3.4 V, which the scientists defined as ‘unprecedented’, overcoming the 3.0 V limitation of conventional supercapacitors along with significantly improved energy storage. This work addresses electrolyte instability, doubling energy density to provide electric vehicles with increased range and faster acceleration while simplifying module design through reduced cell stacking.

Researchers at the International Advanced Research Centre for Powder Metallurgy and New Materials (ARCI) in India have reported high-voltage supercapacitors based on a dual-functional porous graphene carbon nanocomposite (PGCN) electrode, which could be beneficial for applications like solar panels and also provide electric vehicles with increased range and faster acceleration.Conventional electrolytes used in commercial supercapacitors can operate between 2.5–3.0 V and begin to decompose or face safety issues (such as flammability) at higher voltages. The team’s new design was able to reach 3.4 V, which the scientists defined as ‘unprecedented’, overcoming the 3.0 V limitation of conventional supercapacitors along with significantly improved energy storage. This work addresses electrolyte instability, doubling energy density to provide electric vehicles with increased range and faster acceleration while simplifying module design through reduced cell stacking.

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