Boosting the Utilization and Electrochemical Performances of Polyaniline by Forming a Binder-Free Nanoscale Coaxially Coated Polyaniline/Carbon Nanotube/Carbon Fiber Paper Hierarchical 3D Microstructure Composite as a Supercapacitor Electrode
Boosting the Utilization and Electrochemical Performances of Polyaniline by Forming a Binder-Free Nanoscale Coaxially Coated Polyaniline/Carbon Nanotube/Carbon Fiber Paper Hierarchical 3D Microstructure Composite as a Supercapacitor Electrode
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通过形成无粘合剂纳米级同轴涂覆聚苯胺/碳纳米管/碳纤维纸分层3D微结构复合材料作为超级电容器电极来提高聚苯胺的利用率和电化学性能
DOI：
10.1021/acsomega.0c02151
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发表时间：
2020-08
期刊：
影响因子：
4.1
通讯作者：
Wangxing Li
中科院分区：
文献类型：
--
作者：
Juan Du;Yahao Li;Yu Zhang;Jianhong Yang;Adri C. T. van Duin;De Chen;Wang Fangping;Yingtao Luo;Kaibin Chen;Wangxing Li
采用一步电化学法在碳纳米管/碳纤维纸(CFP)/碳纳米管(CNTs)/碳纤维纸(CFP)衬底上形成纳米级聚苯胺(PANI)。用场发射扫描电子显微镜、透射电子显微镜、傅里叶变换红外光谱和拉曼光谱对无粘结剂PANI/CNTs/CFP电极的化学性质和结构进行了表征。在对称双电极体系中，当电流密度为1 mA·cm-2(1.8A·g-1)时，PANI/CNTs/CFP的比电容达到731.6 mF·cm-2(1354.7 F·g-1)。该对称超级电容器器件在1 mA·cm-2(1.8A·g-1)的电流密度下表现出良好的循环性能，循环10000次，容量保持率为81.4%。结果表明，无粘结剂碳纳米管/CFP复合材料是制备高质量载荷量超薄PANI膜的主要载体。层次化的三维结构PANI/CNTs/CFP为超电容反应提供了足够的空间和传输通道，形成了有效的电极-电解液界面。在碳纳米管的侧壁上形成的同轴涂层的纳米级PANI膜可以实现有效的电荷转移和缩短扩散长度。因此，聚苯胺的利用效率和电化学性能都得到了显著的提高。这种基于碳纳米管的无粘结剂层次化三维微结构的合理设计策略可用于制备各种先进的电化学储能和转换系统用储能电极。
Nanoscale polyaniline (PANI) is formed on a hierarchical 3D microstructure carbon nanotubes (CNTs)/carbon fiber paper (CFP) substrate via a one-step electrochemical polymerization method. The chemical and structural properties of the binder-free PANI/CNTs/CFP electrode are characterized by field emission scanning electron microscopy, transmission electron microscopy, Fourier transform infrared spectroscopy, and Raman spectroscopy. The specific capacitance of PANI/CNTs/CFP tested in a symmetric two-electrode system reaches 731.6 mF·cm–2 (1354.7 F·g–1) at a current density of 1 mA·cm–2 (1.8 A·g–1). The symmetric supercapacitor device demonstrates excellent cycling performance up to 10,000 cycles with a capacitance retention of 81.4% at a current density of 1 mA·cm–2 (1.8 A·g–1). The results demonstrate that the binder-free CNTs/CFP composite is a strong backbone for depositing ultrathin PANI layers at a high mass loading. The hierarchical 3D microstructure PANI/CNTs/CFP provides enough space and transporting channels to form an efficient electrode–electrolyte interface for the supercapacitance reaction. The formed nanoscale PANI film coaxially coated on the sidewalls of CNTs enables efficient charge transfer and a shortened diffusion length. Hence, the utilization efficiency and electrochemical performances of PANI are significantly improved. The rational design strategy of a CNT-based binder-free hierarchical 3D microstructure can be used in preparing various advanced energy-storage electrodes for electrochemical energy-storage and conversion systems.
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DOI：
10.1016/j.physe.2005.02.004
发表时间：
2005-06
影响因子：
3.3
作者：
Bingyong Yan;Kaiyou Qian;Yafei Zhang;Dong Xu
通讯作者：
Bingyong Yan;Kaiyou Qian;Yafei Zhang;Dong Xu
影响因子：
0.7
作者：
GENIES, EM;SYED, AA;TSINTAVIS, C
通讯作者：
TSINTAVIS, C
通过表面功能化控制超级电容器电极材料用碳纤维/聚苯胺复合材料的形貌和性能
影响因子：
3.9
作者：
Ke Fuyou;Tang Jun;Xu Hongyao;Guang Shanyi;Xu HY;Guang SY
通讯作者：
Guang SY
影响因子：
3.3
作者：
I. I. Misnon-I.;R. Jose
通讯作者：
I. I. Misnon-I.;R. Jose
DOI：
10.1016/j.synthmet.2011.04.019
发表时间：
2011-07
期刊：
The Lancet
影响因子：
--
作者：
Jiguo Tu;Jungang Hou;Wei-Shu Wang;S. Jiao;Hongmin Zhu
通讯作者：
Jiguo Tu;Jungang Hou;Wei-Shu Wang;S. Jiao;Hongmin Zhu