title: Popcorn-Derived Porous Carbon for Energy Storage and CO2 Capture.
abstract: Porous carbon materials have drawn tremendous attention due to its applications in energy storage, gas/water purification, catalyst support, and other important fields. However, producing high-performance carbons via a facile and efficient route is still a big challenge. Here we report the synthesis of microporous carbon materials by employing a steam-explosion method with subsequent potassium activation and carbonization of the obtained popcorn. The obtained carbon features a large specific surface area, high porosity, and doped nitrogen atoms. Using as an electrode material in supercapacitor, it displays a high specific capacitance of 245 F g(-1) at 0.5 A g(-1) and a remarkable stability of 97.8% retention after 5000 cycles at 5 A g(-1). The product also exhibits a high CO2 adsorption capacity of 4.60 mmol g(-1) under 1066 mbar and 25 °C. Both areal specific capacitance and specific CO2 uptake are directly proportional to the surface nitrogen content. This approach could thus enlighten the batch production of porous nitrogen-doped carbons for a wide range of energy and environmental applications.
authors.affiliation: Ningbo Institute of Materials Technology & Engineering, Chinese Academy of Sciences , 1219 Zhongguan West Road, Ningbo 315201, China.|Faculty of Materials Science and Chemical Engineering, Ningbo University , 818 Fenghua Road, Ningbo 315211, China.
authors.forename: Ting
authors.initials: T
authors.lastname: Liang
authors.affiliation: Ningbo Institute of Materials Technology & Engineering, Chinese Academy of Sciences , 1219 Zhongguan West Road, Ningbo 315201, China.
authors.forename: Chunlin
authors.initials: C
authors.lastname: Chen
authors.affiliation: Faculty of Materials Science and Chemical Engineering, Ningbo University , 818 Fenghua Road, Ningbo 315211, China.
authors.forename: Xing
authors.initials: X
authors.lastname: Li
authors.affiliation: Ningbo Institute of Materials Technology & Engineering, Chinese Academy of Sciences , 1219 Zhongguan West Road, Ningbo 315201, China.
authors.forename: Jian
authors.initials: J
authors.lastname: Zhang
mesh_terms: D002244:Carbon / Q000737:chemistry*; D002245:Carbon Dioxide / Q000737:chemistry*; D009584:Nitrogen / Q000737:chemistry*; D016062:Porosity; D003313:Zea mays / Q000737:chemistry*
chemical_list: D002245:Carbon Dioxide; D002244:Carbon; D009584:Nitrogen