Polyaniline/Cu(II) Metal-organic Frameworks Composite for High Performance Supercapacitor Electrode
Polyaniline/Cu(II) Metal-organic Frameworks Composite for High Performance Supercapacitor Electrode
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DOI：
10.1007/s10904-019-01145-9
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发表时间：
2019-11-01
影响因子：
4
通讯作者：
Dezfuli, Amin Shiralizadeh
中科院分区：
文献类型：
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作者：
Neisi, Zeinab;Ansari-Asl, Zeinab;Dezfuli, Amin Shiralizadeh
超级电容器的比电容可以受益于金属有机框架（MOFs）的孔隙率。在本研究中，一个纳米复合材料的聚苯胺-铜（II）MOFs（PANI/Cu-MOF）的制备通过两个步骤的过程，包括苯胺的化学聚合和室温合成的Cu-MOFs的存在下制备的聚苯胺。采用FT-IR、PXRD、SEM、EDAX、XPS等手段对合成的化合物进行了表征。PXRD图谱显示了纳米复合材料的非晶态特征。FT-IR和EDS图谱证明了PANI/Cu-MOF纳米复合材料的形成。采用扫描电子显微镜（SEM）研究了PANI/Cu-MOF的形态。通过循环伏安（CV）、恒电流充放电（GCD）和电化学阻抗谱（EIS）测试表明，PANI/Cu-MOF复合材料的电容性能优于纯Cu-MOF。此外，循环伏安测试结果表明，PANI/Cu-MOF复合材料具有较高的电容（5 mV s（-1）时为734 F g（-1））和良好的电化学循环稳定性。
The specific capacitance of supercapacitors can be benefited by the porosity of the metal-organic frameworks (MOFs). In this study, a nanocomposite of polyaniline-Cu(II) MOFs (PANI/Cu-MOF) was fabricated by a two-step process including chemical polymerization of aniline and room temperature synthesis of Cu-MOFs in the presence of the as-prepared polyaniline. The obtained compounds were characterized by FT-IR, PXRD, SEM, EDAX mapping, and XPS techniques. PXRD patterns revealed the amorphous character of the nanocomposite. FT-IR and EDS-mapping demonstrate the formation of PANI/Cu-MOF nanocomposite. SEM was applied for studying the PANI/Cu-MOF morphology. As demonstrated by CV (cyclic voltammetry), GCD (galvanostatic charge/discharge), and EIS (electrochemical impedance spectroscopy), PANI/Cu-MOF composite shows better capacitive properties compared to the pure Cu-MOF. Furthermore, the results of CVs indicate that the PANI/Cu-MOF composite has a higher capacitance (734 F g(-1) at 5 mV s(-1)) with good electrochemical cycling stability.