Biomass-Based Porous N-Self-Doped Carbon Framework/Polyaniline Composite with Outstanding Supercapacitance
Biomass-Based Porous N-Self-Doped Carbon Framework/Polyaniline Composite with Outstanding Supercapacitance
复制标题
具有优异超级电容的生物质基多孔N-自掺杂碳骨架/聚苯胺复合材料
DOI：
10.1021/acssuschemeng.7b01380
复制
发表时间：
2017-10-01
影响因子：
8.4
通讯作者：
Peng, Xinwen
中科院分区：
文献类型：
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作者：
Hu, Yijie;Tong, Xing;Peng, Xinwen
结合静电电荷积累和感应电反应机制的复合材料是用于电化学能量存储的特别有吸引力的高性能超级电容器电极。到目前为止，利用可再生资源制备低成本的碳复合材料仍然存在困难。本研究以可再生资源中的N-自掺杂碳为骨架材料，制备了一种性能优异、成本低廉的多孔碳复合材料。N-自掺杂碳骨架是由壳聚糖通过一种简单而独特的自组装和冰模板法制备的，没有任何物理或化学活化，并表现出分级多孔结构。这种织构不仅允许聚苯胺（PANI）在内部网络中的有效渗透和均匀涂覆，而且还允许电解质的快速渗透和解吸。由于PANI在电解液中的扩散路径短、包覆均匀、易于与电解液接触，该复合电极具有很高的电化学稳定性。
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...