We used bacterial cellulose (BC) as both template and precursor for the synthesis of nitrogen-doped carbon networks through the carbonization of polyaniline (PANI) coated BC. The as-obtained carbon networks can act not only as support for obtaining high capacitance electrode materials such as activated carbon (AC) and carbon/MnO2hybrid material, but also as conductive network to integrate active electrode materials.As a result, the as-assembled AC//carbon-MnO2 asymmetric supercapacitor exhibits a considerably high energy density of 63 Wh kg-1 in 1.0 M Na2SO4 aqueous solution, higher than most reported AC//MnO2asymmetric supercapacitors. More importantly, this asymmetric supercapacitor also exhibits an excellent cycling performance with 92% specific capacitance retained after 5000 cycles. Those results offer a low-cost, eco-friendly design of electrode materials for high-performance supercapacitors.

Nitrogen-doped carbon networks derived from polyaniline coated bacterial cellulose for high energy density supercapacitors

248th National Meeting (2014)

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