NiCo₂O₄ decorated PANI-CNTs composites as supercapacitive electrode materials

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• 作者：Gunjana Chaudhary^a ; Ashok K. Sharma^a ; ^{aksharma210@gmail.com} ; Preetam Bhardwaj^a ; Kamal Kant^a ; Indu Kaushal^a ; Ajay K. Mishra^b
• 关键词：Polyaniline ; Carbon nanotubes ; Nickel cobaltite ; Supercapacitor
• 刊名：Journal of Energy Chemistry
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：26
• 期：1
• 页码：175-181
• 全文大小：3481 K
• 卷排序：26

文摘

Hierarchical NiCo2O4/PANI/CNTs hybrid composites were designed and fabricated having a layer of NiCo2O4 on the surface of PANI encapsulated CNTs with different morphologies. Physicochemical attributes of the synthesized composites were examined by FTIR, UV–visible and X-ray diffraction (XRD) techniques. Morphological aspects were evaluated by field-emission scanning microscopy (FESEM), electron diffraction spectroscopy (EDS), high resolution transmission electron microscopy (HRTEM) and selected area electron diffraction (SAED) studies. Electrochemical measurements revealed an improved specific capacitance of 2250 F/g at a scan rate of 5 mV/s and 2000 F/g at a current density of 1 A/g with good rate capability using a three-electrode system. These enhanced features are achieved from the well designed nanostructure and the synergistic contributions of individual components in the electrode material.