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- W2073291854 abstract "Herein, humic acid (HA), a kind of biomass (natural polymer), is firstly adopted as a raw material for synthesis of activated carbons (ACs) via a high-temperature activation procedure with KOH. Their porous textures as well as surface groups are fully characterized by N2 sorption isothermal analysis, SEM, TEM, XPS and IR, respectively. The HA-derived ACs show very high specific surface areas (up to 2990.32 m2g−1). Furthermore, electrochemical studies such as cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS) and galvanostatic charge/discharge (GCD) are carried out to evaluate their specific capacitance and rate capability. It reveals that HA-derived ACs possess high specific capacitance (350 Fg−1) at a scan rate of 5 mV s−1 in 1 M H2SO4. Moreover, supercapacitors based on HA-derived ACs demonstrate good cycling stability in which the 92% initial capacitance has been retained even after 9000 cycle numbers at a high current density of 1 A g−1." @default.
- W2073291854 created "2016-06-24" @default.
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- W2073291854 date "2014-08-01" @default.
- W2073291854 modified "2023-09-23" @default.
- W2073291854 title "Meso- and micro- porous composite carbons derived from humic acid for supercapacitors" @default.
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- W2073291854 doi "https://doi.org/10.1016/j.electacta.2014.05.115" @default.
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