A novel and simple nitrogen-doped carbon/polyaniline electrode material for supercapacitors

Abstract

We demonstrated a simple and environment-friendly method in the preparation of N-doped carbon/PANI (NCP) composite without binder. The structure and the property of NCP have been characterized by XPS, IR, XRD, SEM, CV, GCD and EIS. The results reveal that NCP has high capacitance performance of up to 615 F·g⁻¹ at 0.6 A·g⁻¹. Additionally, the asymmetric NCP₃₀₀//carbon supercapacitor delivers a high capacitance (111 F·g⁻¹ at 1 A·g⁻¹) and a capacity retention rate of 82% after 1200 cycles at 2 A·g⁻¹. The ASC cell could deliver a high energy density of 39.1 W·h·kg⁻¹ at a power density of 792.6 W·kg⁻¹.

Keywords

polyaniline / electrodeposition / carbonization / supercapacitor

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Acknowledgements

This research was funded by the Natural Science Foundation of Guangxi Province (2020GXNSFAA159015), the Guangxi Key Laboratory of Optical and Electronic Materials and Devices (20KF-20), the Open Funds of Key Laboratory of New Processing Technology for Nonferrous Metal and Materials of Ministry of Education (19AA-18), the Postgraduate Joint Cultivation Base of the Education Department of Guangxi, and the Opening Project of Guangxi Key Laboratory of Calcium Carbonate Resources Comprehensive Utilization (Hezhou University) (HZXYKFKT201903).

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