Abstract Electrochemically active, free-standing mesoporous films of nickel aluminate/ multiwalled carbon nanotubes (NiAl2O4/MWCNT) composite were synthesized by eco-friendly modified evaporation-induced self-assembly process (EISA). The high temperature annealed composite material displayed excellent morphological and electrochemical characteristics. The electrochemical performance was evaluated using cyclic voltammetry (CV), galvanostatic charge-discharge (GCD), and electrochemical impedance spectroscopy (EIS) analysis at 600 °C, 700 °C, 800 °C, and 900 °C. In particular, at 900 °C, the supercapacitor exhibited a specific capacitance of 618 F g-1. The inverse spinel structure prepared by the modified evaporation-induced self-assembly (m-EISA) process assembled into a well-configured free-standing film in which MWCNTs facilitated electronic transport across NiAl2O4/MWCNTs interfaces. The modified EISA process employed in the present work was eco-friendly, economical, energy-efficient, time-saving, and afforded flexibility in regulating the final mesostructure of the free-standing films.

中文翻译：

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NiAl2O4/MWCNT 复合介孔自支撑膜的改性 EISA 合成作为潜在的电化学电容器材料

摘要 通过环保的改良蒸发诱导自组装工艺 (EISA) 合成了具有电化学活性的、独立的铝酸镍/多壁碳纳米管 (NiAl2O4/MWCNT) 复合材料介孔膜。高温退火复合材料显示出优异的形态和电化学特性。使用循环伏安法 (CV)、恒电流充放电 (GCD) 和电化学阻抗谱 (EIS) 分析在 600 °C、700 °C、800 °C 和 900 °C 下评估电化学性能。特别是，在 900 °C 时，超级电容器的比电容为 618 F g-1。通过改进的蒸发诱导自组装 (m-EISA) 工艺制备的反尖晶石结构组装成结构良好的独立薄膜，其中 MWCNTs 促进了跨越 NiAl2O4/MWCNTs 界面的电子传输。本工作中采用的改良 EISA 工艺环保、经济、节能、省时，并且在调节独立薄膜的最终细观结构方面提供了灵活性。