Polyaniline-modified graphitic carbon nitride as electrode materials for high-performance supercapacitors
Polyaniline-modified graphitic carbon nitride as electrode materials for high-performance supercapacitors
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DOI：
10.1007/s42823-022-00459-y
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发表时间：
2023-01
期刊：
影响因子：
4.5
通讯作者：
X. Qin;Jia Wan;Qi Zhang;Yongjie Zhang;Huangzhong Yu;S. Shi
中科院分区：
文献类型：
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作者：
X. Qin;Jia Wan;Qi Zhang;Yongjie Zhang;Huangzhong Yu;S. Shi
石墨氮化碳（g-C3N4）由于其合适且可调的带隙、高化学/热稳定性、地球丰富性和环境友好性而在储能领域受到广泛关注。然而，其导电性仍需提高才能用作超级电容器的电极材料。在本报告中，我们通过原位聚合制备了基于g-C3N4和聚苯胺（PANI）的二维复合材料（CN-PANI），该复合材料可以有效地用作超级电容器的电极材料。 PANI的引入可以增加电极的电导率，g-C3N4的多孔结构可以为电解质离子的传输提供足够的通道，提高电极的稳定性。结果，所得CN-PANI表现出优异的比电容（5 mV/s下为234.0 F g−1）、良好的倍率性能和高循环稳定性（50 mV/s下10,000次循环后为86.2%），显示出高倍率超级电容器的巨大潜力。
Graphitic carbon nitride (g-C3N4) has attracted extensive attention in energy storage due to its suitable and tunable bandgap, high chemical/thermal stability, earth abundance and environmental friendliness. However, its conductivity should be improved to work as the electrode materials in supercapacitors. In this report, we have prepared a two-dimensional composite (CN-PANI) based on g-C3N4and polyaniline (PANI) by in-situ polymerization, which can be efficiently applied as electrode material for supercapacitors. The introduction of PANI can increase the conductivity of the electrode, and the porous structure of g-C3N4can provide enough channels for the transport of electrolyte ions and improve the electrode stability. As a result, the obtained CN-PANI demonstrates excellent specific capacitance (234.0 F g−1at 5 mV/s), good rate performance and high cycling stability (86.2% after 10,000 cycles at 50 mV/s), showing great potential for high-rate supercapacitors.