Lao Jianhao, Lu Yao, Fang Songwen, Xu Fen, Sun Lixian, Wang Yu, Zhou Tianhao, Liao Lumin, Guan Yanxun, Wei Xueying, Zhang Chenchen, Yang Yukai, Xia Yongpeng, Luo Yumei, Zou Yongjin, Chu Hailiang, Zhang Huanzhi, Luo Yong, Zhu Yanling
Guangxi Key Laboratory of Information Materials, Guangxi Collaborative Innovation Center for Structure and Properties for New Energy and Materials, School of Material Science and Engineering, Guilin University of Electronic Technology, Guilin 541004, China.
School of Electronic Engineering and Automation, Guilin University of Electronic Technology, Guilin 541004, China.
Nanomaterials (Basel). 2022 Jun 25;12(13):2186. doi: 10.3390/nano12132186.
Supercapacitors, as a new type of green electrical energy storage device, are a potential solution to environmental problems created by economic development and the excessive use of fossil energy resources. In this work, nitrogen/oxygen (N/O)-doped porous carbon materials for high-performance supercapacitors are fabricated by calcining and activating an organic crosslinked polymer prepared using polyethylene glycol, hydroxypropyl methylcellulose, and 4,4-diphenylmethane diisocyanate. The porous carbon exhibits a large specific surface area (1589 m·g) and high electrochemical performance, thanks to the network structure and rich N/O content in the organic crosslinked polymer. The optimized porous carbon material (C), obtained by adjusting the raw material ratio of the organic crosslinked polymer, exhibits a high specific capacitance (522 F·g at 0.5 A·g), good rate capability (319 F·g at 20 A·g), and outstanding stability (83% retention after 5000 cycles) in a three-electrode system. Furthermore, an energy density of 18.04 Wh·kg is obtained at a power density of 200.0 W·kg in a two-electrode system. This study demonstrates that organic crosslinked polymer-derived porous carbon electrode materials have good energy storage potential.
超级电容器作为一种新型绿色电能存储装置，是解决经济发展和化石能源过度使用所造成环境问题的潜在方案。在本研究中，通过煅烧和活化一种由聚乙二醇、羟丙基甲基纤维素和4,4-二苯基甲烷二异氰酸酯制备的有机交联聚合物，制备出用于高性能超级电容器的氮/氧（N/O）掺杂多孔碳材料。由于有机交联聚合物中的网络结构和丰富的N/O含量，该多孔碳具有较大的比表面积（1589 m²·g⁻¹）和高电化学性能。通过调整有机交联聚合物的原料比例获得的优化多孔碳材料（C），在三电极体系中表现出高比电容（0.5 A·g⁻¹时为522 F·g⁻¹）、良好的倍率性能（20 A·g⁻¹时为319 F·g⁻¹）和出色的稳定性（5000次循环后保持率为83%）。此外，在两电极体系中，功率密度为200.0 W·kg⁻¹时，能量密度达到18.04 Wh·kg⁻¹。本研究表明，有机交联聚合物衍生的多孔碳电极材料具有良好的储能潜力。
