High performance supercapacitor for efficient energy storage under extreme environmental temperatures

Efficient and cost-effective energy storage over a wide range of temperature is achieved by developing graphene-based supercapacitor. The supercapacitor shows outstanding charge storage characteristics from −20 °C to 45 °C. High capacitance, good rate capability and exceptionally low equivalent series resistance of the device make sure the best performance at extreme operating temperature. Supercapacitor also shows excellent cyclic stability at various operating temperatures.