Soybean-waste-derived activated porous carbons for electrochemical-double-layer supercapacitors: Effects of processing parameters
作者： Wei Sun , Yan Xiao , Qingyuan Ren , Fuqian Yang
DOI: 10.1016/J.EST.2019.101070
关键词: Porosity 、 Microstructure 、 Inert gas 、 Hydrothermal carbonization 、 Materials science 、 Capacitance 、 Electrochemistry 、 Chemical engineering 、 Supercapacitor 、 Energy storage
摘要: Abstract The electrochemical performance of electrical-double-layer capacitors is dependent on the microstructures and porous structures electrode materials, which are controlled by processing parameters. In this work, we synthesize activated carbons (ACs) submicron sizes from low-cost, ground soybean waste via hydrothermal carbonization (HTC) facile, environment-friendly physical activation, systematically investigate effects parameters properties synthesized ACs. experimental results reveal that activation agent H2O steam high temperature can effectively improve capacitance ACs with an optimum, specific up to 220 F/g outstanding long-term stability over 98% after 10,000 cycles. flow inert gas exhibit excellent rate capabilities relatively low impedance. likely provide some guidance for preparation biomass-derived ACs, help better understand fundamental mechanisms energy storage in double layer.
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