Nitrogen optimized highly stable carbon for increasing the efficiency of supercapacitors. (30th June 2022)

• Record Type: Journal Article
• Authors: Bailmare, Deepa B.; Wagh, Mrunali D.; Narkhede, Nitin; Sharma, R. K.; Deshmukh, Abhay D.
• Is Part Of: International journal of energy research. Volume 46:Number 11(2022)
• Page Start: 15850
• Page End: 15863
• Publication Date: 2022-06-30
• Subjects: carbon -- energy storage -- life cycles -- N‐doped carbon -- supercapacitor; Power resources -- Periodicals; Power (Mechanics) -- Periodicals; Power resources -- Research -- Periodicals; 621.042
• DOI: 10.1002/er.8285
• Languages: English
• ISSNs: 0363-907X

Abstract

Summary: Heteroatom doping in carbon displays exciting chemistry and plays an extremely important role in improving electrochemical performances. For instance, in energy storage devices, carbon allotropes showed excellent capacitive characteristics, however, their limiting ion storing capability cannot meet current requirements. Herein, the work discusses a simple technique for developing functionalized N‐doped carbon to provide an easy access to ion percolation with high specific surface area of 709.09 m 2 g −1 . The optimized carbon material delivers high gravimetric capacitance 295Fg −1 with high volumetric capacitance of 270Fcm −3 . Also, the high electrochemical performance of its symmetric device 268Fg −1 at 0.25 Ag −1 current density with noticeably high cyclic stability of 100 000 cycles with 90% capacitance retention reveals an excellent approach to the device applications. These results imply an optimized nitrogen content that strongly influences the electrochemical performance of carbon material and opens up opportunities for designing high‐performance energy storage devices. Abstract : This work shows a simple technique for designing nitrogen‐containing functionalized (NCF) carbon as electrode material for high‐performance supercapacitor application. An optimized electrode with microstructures provides the addition of relative nitrogen and oxygen functionality which enhances the overall performance of the device. The novel NCF‐800 electrode delivers remarkable cyclic stability with 100 000 cycles while retaining 90% capacitance in two‐electrode symmetric supercapacitor. The two electrodes NCF‐800 cell was further extended to 6 V revealing the advancement of the NCF‐800 electrode in the conventional electrolyte.