In Situ Synthesis and Characterization of CuFe10Al2O19/MWCNT Nanocomposites for Supercapacitor and Microwave-Absorbing Applications

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• 作者：Pallab Bhattacharya ; Chapal K. Das
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2013
• 出版时间：July 17, 2013
• 年：2013
• 卷：52
• 期：28
• 页码：9594-9606
• 全文大小：722K
• 年卷期：v.52,no.28(July 17, 2013)
• ISSN：1520-5045

文摘

The present work focused on the synthesis and characterization of a magnetic M-type hexaferrite (CuFe₁₀Al₂O₁₉) and its coating on the acid-modified multiwall carbon nanotube (MWCNT) through an in situ technique. Thermoplastic polyurethane (TPU)/CuFe₁₀Al₂O₁₉/MWCNT nanocomposites, for the fabrication of microwave test plates, were prepared via the solution mixing process. The nanocomposites exhibited a remarkable and improved microwave absorption properties, compared to the pristine MWCNT and CuFe₁₀Al₂O₁₉. The enhanced microwave absorption can be explained by the dielectric loss due to MWCNT, and the magnetic loss initiated by CuFe₁₀Al₂O₁₉. We have also measured the relative complex permittivity and permeability, which assists to elucidate the improved microwave absorption property of the composites. The nanocomposite also showed a better specific capacitance of 269 F/g, and good electrochemical impedance properties than those of the pristine MWCNT and CuFe₁₀Al₂O₁₉. This work can be extended effectively in the future for both supercapacitor and microwave-absorbing applications.