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Biomass-Based Porous N-Self-Doped Carbon Framework/Polyaniline Composite with Outstanding Supercapacitance
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2017-09-19 00:00:00 , DOI: 10.1021/acssuschemeng.7b01380 Yijie Hu 1 , Xing Tong 1 , Hao Zhuo 1 , Linxin Zhong 1 , Xinwen Peng 1
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2017-09-19 00:00:00 , DOI: 10.1021/acssuschemeng.7b01380 Yijie Hu 1 , Xing Tong 1 , Hao Zhuo 1 , Linxin Zhong 1 , Xinwen Peng 1
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Composites combining electrostatic charge accumulation and faradic reaction mechanisms are especially attractive high-performance supercapacitor electrodes for electrochemical energy storage. Up to now, it is difficult to prepare low-cost carbon composites from renewable resources. In this work, an outstanding and low-cost composite was fabricated by using sustainable N-self-doped carbon framework as a hierarchical porous carbon substrate from renewable resource. The N-self-doped carbon framework was fabricated from chitosan via a facile yet unique self-assembly and ice template method without any physical or chemical activation, and exhibited hierarchical porous structure. This texture not only allowed the efficient infiltration and uniform coating of polyaniline (PANI) in the inner network but also permitted a rapid penetration and desorption of electrolytes. Due to short diffusion pathway, uniformly coating of PANI, and high accessibility of PANI to electrolytes, the composite electrode had a very high supercapacitance of 373 F g–1 (1.0 A g–1) and excellent rate capability (275 F g–1, 10 A g–1) in a three-electrode system. The symmetric supercapacitor also showed a supercapacitance of high up to 285 F g–1 (0.5 A g–1), and a very high energy density of 22.2 Wh kg–1. Furthermore, the composite also presented a good cycling stability.
中文翻译：
具有超强电容的生物质基多孔氮自掺杂碳骨架/聚苯胺复合材料
结合了静电荷积累和法拉第反应机理的复合材料是用于电化学能量存储的极具吸引力的高性能超级电容器电极。迄今为止，由可再生资源制备低成本的碳复合材料是困难的。在这项工作中，通过使用可持续的N型自掺杂碳框架作为可再生资源的分层多孔碳基质，制造了一种出色的低成本复合材料。N-自掺杂碳骨架是通过壳聚糖通过一种简便而独特的自组装和冰模板方法制备的，没有任何物理或化学活化，并表现出分层的多孔结构。这种质地不仅允许聚苯胺（PANI）在内部网络中的有效渗透和均匀涂层，而且还允许电解质快速渗透和解吸。由于扩散路径短，PANI的涂层均匀以及PANI对电解质的可及性高，因此复合电极的超电容非常高，为373 F g在三电极系统中具有–1（1.0 A g –1）和出色的倍率能力（275 F g –1，10 A g –1）。对称超级电容器还显示出高达285 F g –1（0.5 A g –1）的超级电容，以及22.2 Wh kg –1的非常高的能量密度。此外，该复合材料还表现出良好的循环稳定性。
更新日期：2017-09-20
中文翻译：
具有超强电容的生物质基多孔氮自掺杂碳骨架/聚苯胺复合材料
结合了静电荷积累和法拉第反应机理的复合材料是用于电化学能量存储的极具吸引力的高性能超级电容器电极。迄今为止，由可再生资源制备低成本的碳复合材料是困难的。在这项工作中，通过使用可持续的N型自掺杂碳框架作为可再生资源的分层多孔碳基质，制造了一种出色的低成本复合材料。N-自掺杂碳骨架是通过壳聚糖通过一种简便而独特的自组装和冰模板方法制备的，没有任何物理或化学活化，并表现出分层的多孔结构。这种质地不仅允许聚苯胺（PANI）在内部网络中的有效渗透和均匀涂层，而且还允许电解质快速渗透和解吸。由于扩散路径短，PANI的涂层均匀以及PANI对电解质的可及性高，因此复合电极的超电容非常高，为373 F g在三电极系统中具有–1（1.0 A g –1）和出色的倍率能力（275 F g –1，10 A g –1）。对称超级电容器还显示出高达285 F g –1（0.5 A g –1）的超级电容，以及22.2 Wh kg –1的非常高的能量密度。此外，该复合材料还表现出良好的循环稳定性。
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