Abstract
Nitrogen doped carbon materials as electrodes of supercapacitors have attracted abundant attention. Herein, we demonstrated a method to synthesize N-doped macroporous carbon materials (NMC) with continuous channels and large size pores carbonized from polyaniline using multiporous silica beads as sacrificial templates to act as electrode materials in supercapacitors. By the nice carbonized process, i.e., pre-carbonization at 400 °C and then pyrolysis at 700/800/900/1000 °C, NMC replicas with high BET specific surface areas exhibit excellent stability and recyclability as well as superb capacitance behavior (~413 Fg−1) in alkaline electrolyte. This research may provide a method to synthesize macroporous materials with continuous channels and hierarchical pores to enhance the infiltration and mass transfer not only used as electrode, but also as catalyst somewhere micro- or mesopores do not work well.
Highlights
Supercapacitors (SCs) have been the hot topic in new energy research since the twentieth century [1,2]
By the special carbonized demonstrate a method to synthesize N-doped macroporous carbon materials with technique, we successfully synthesized NMC materials possessing a high Brunauer-Emmett-Teller continuous channels around 40–50 nm to increase the mass transfer and the movement of electrolyte (BET) specific surface area jointly provided by the macropores, large-scale mesopores and the ions and electrons, the NMC materials using pristine polyaniline (PANI) as C and N source are micropores connecting to each other
The pores of NMC replicas are composed of the micro, large-scale meso- and macropores
Summary
Supercapacitors (SCs) have been the hot topic in new energy research since the twentieth century [1,2]. By the special carbonized demonstrate a method to synthesize N-doped macroporous carbon materials (denoted as NMC) with technique, we successfully synthesized NMC materials possessing a high Brunauer-Emmett-Teller continuous channels around 40–50 nm to increase the mass transfer and the movement of electrolyte (BET) specific surface area jointly provided by the macropores, large-scale mesopores and the ions and electrons, the NMC materials using pristine polyaniline (PANI) as C and N source are micropores connecting to each other. These properties inverted from the multiporous silica inverting fromcontent the IRA-900 resin [61]. Materials and Methods channels and pores as well as the N functional groups, thereby the capacitance increases
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