Preparation and performance of straw based activated carbon for supercapacito…

a b s t r a c t The activated carbon with honeycomb-like morphology for electrochemical double layer capacitors (EDLCs) was prepared from wheat straw by carbonization and subsequent activation with KOH. The product presented micro- and mesoporous structure with the peak pore size of 2.1 nm and high specific surface area of 2316 m2/g. The electrochemical capacitance performances of the activ…