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Chemistry. 2017 Sep 27;23(54):13474-13481. doi: 10.1002/chem.201702544. Epub 2017 Sep 5.

Hierarchical Hybrids Integrated by Dual Polypyrrole-Based Porous Carbons for Enhanced Capacitive Performance.

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Xinjiang Uygur Autonomous Region Key Laboratory of Coal Clean, Conversion and Chemical Engineering Process, School of Chemistry and Chemical Engineering, Xinjiang University, Urumqi, 830046, P.R. China.
School of Chemical Engineering and Technology, Xi'an Jiaotong University, Xi'an, 710049, P.R. China.


Architectural design of nitrogenous polymer-based carbons represents a facile and efficient strategy to improve performance because of their morphological diversity, tailorability, and N-containing structure. In this research, 0D and 1D forms of polypyrrole-derived porous carbons (A-PCS and A-PCT, respectively) are first integrated into nitrogen-doped hierarchically porous A-PCS/PCT hybrids by applying an easy multistep method. This integration, along with chemical activation, prevents serious agglomeration of carbon particles or tubes and creates a connected porous network structure, leading to improved textural properties (high surface area of 1684 m2  g-1 , high pore volume of 1.57 cm3  g-1 , and hierarchical porosity). Thus, A-PCS/PCT hybrids in a three-electrode setup reach high specific capacitances of 224 and 206 F g-1 at 1 and 20 A g-1 , respectively, with high rate capability (92 % capacitance retention). A symmetrical supercapacitor with A-PCS/PCT electrodes presents the highest power and energy densities of 12.6 kW kg-1 and 8.58 Wh kg-1 , respectively, and exceptional cycling life and stability with 92.4 % retention for up to 20 000 cycles. This study on conductive polymer-based hybrid materials may guide the design of architectures with new structures for applications in energy storage and conversion technologies.


carbon; mesoporous materials; nanostructures; polymers; supercapacitors


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