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- W2000907652 abstract "The electrochemical double-layer capacitive properties of mesoporous carbon (MC) materials with a moderate amount of nitrogen functionality are reported. Ordered mesoporous carbon is prepared using mesoporous silica (MS) as a template and sucrose as a carbon source. Two types of N-doped MCs are prepared by ammoxidation performed at different stages of the MC preparation process—ammoxidation before (NC) and after (CN) carbonization. Irrespective of the ammoxidation sequence, N-doped MCs maintain mesoporous properties such as a high surface area with narrow pore-size distribution. However, the amounts and chemical states of incorporated nitrogen are highly dependent on the sequence of ammoxidation. In a cyclic voltammetry test, N-doped MCs, compared with MC, exhibit higher capacitance in addition to fast charge/discharge characteristics, which results from their mesoporosity and the pseudo-capacitive effect of incorporated nitrogen. In particular, the NC-type MCs show the best capacitive properties among the materials studied due to the large amount of pyridinic species that modifies the electron donor/acceptor properties of the surface and thereby results in an enhanced, fast and reversible faradaic redox reaction." @default.
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- W2000907652 date "2008-05-01" @default.
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- W2000907652 title "Electrochemical capacitor performance of N-doped mesoporous carbons prepared by ammoxidation" @default.
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- W2000907652 doi "https://doi.org/10.1016/j.jpowsour.2008.01.055" @default.
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