Highly specific capacitance materials constructed via in situ synthesis of polyaniline in a cellulose matrix for supercapacitors
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On the basis of the requirements for both biobased economy and energy storage materials, we are interested in using cellulose-based microporous film as a template for in situ synthesis of polyaniline (PANI). Multifunctional carbon nanotube (CNT)/cellulose composite films were also prepared from a CNT/cellulose suspension in a NaOH/urea aqueous system. Subsequently, PANI was synthesized in situ in the pores of cellulose and CNT/cellulose substrates to construct PANI/cellulose (PC) films and PANI/CNT/cellulose (PCC) films, respectively. Both PC and PCC films were flexible and exhibited a highly specific capacitance and good cycle stability. With the addition of CNTs, the specific capacitance of the PCC films as supercapacitor materials was significantly improved. Moreover, a homogeneous structure intertwined with the cellulose, CNTs and PANI appeared in the composite films, indicating good miscibility. This work has provided a new approach to the fabrication of flexible, lightweight, highly effective, and low-cost energy storage materials, broadening the applications of cellulose.
KeywordsSupercapacitor Cellulose matrix In situ synthesis Polyaniline Flexible film
This work was supported by the National Basic Research Program of China (973 Program, 2010CB732203), the Major Program of National Natural Science Foundation of China (21334005), and the National Natural Science Foundation of China (20874079).
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