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Indian Institute of Technology (IIT) Roorkee 
Greener wet synthesis of nitrogen-doped reduced graphena oxide (N-rGO) for high performance supercapacitor employing environmentally friendly electrolytic components 
Anil Kumar, and Sahil Thareja 
Indian Institute of Technology (IIT) Roorkee 
Application type:
Applied - 2018-08-20 
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Indian Institute of Technology (IIT) Roorkee 
Supercapacitor has been identified as one of the future energy storage devices due to its high power delivery capabilities, long cycle life, high operational temperature range and low charging/discharging time. One of the major issues with the supercapacitor based commercial devices is their poor energy density (5-10Wh/kg) as compared to those of lead acid (~30-40 Wh/kg) and Lithium-ion batteries (100-250Wh/kg), thereby limiting their applications as a substitute to the batteries. However, the supercapacitor may find supremacy in those areas where high power density is required. This would allow the burst-mode power deliveryas required in load-levelling,acceleration/brakes in vehicles and memory backup (static random access memory (SRAM)). It is, therefore desirable to improve the energy density of supercapacitors while maintaining the power density. The present invention provides a greener wet method for the synthesis of nitrogen-doped reduced graphene oxide (N-rGO) as an electrode material, exhibiting high potential window with high energy density for high performance supercapacitor employing environment friendly aqueous electrolytic system. 

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