过渡金属氧化物/聚苯胺电极材料研究进展

Research Progress on Transition Metal Oxide/Polyaniline Electrode Materials

超级电容器(SCs)作为一种储能器件,以其功率密度大、充放电效率好、操作温度窗口宽、循环寿命长等优点受到广泛关注。聚苯胺(PANI)作为电极材料具有本征氧化还原态多、高理论电容等优点,有利于提高超级电容器的能量密度。但由于纯聚苯胺稳定性以及加工性能较差限制了其进一步应用,引入过渡金属氧化物(TMOs),通过二者的协同效应,可以促进氧化还原反应、加快电子转移速度、有效提高电极材料比电容和循环稳定性。本文综述了钌、锰、镍、钴等TMOs/PANI纳米复合材料在超级电容器中的新进展,同时扼要总结讨论了TMOs/PANI的导电机理。

As a kind of energy storage devices, supercapacitors(SCs) have attracted widespread attention for their advantages of high power density, good charging and discharging efficiency, wide operating temperature windows, and a long cycle life. As an electrode material, polyaniline(PANI) has the advantages of multiple intrinsic redox states and high theoretical capacitance, which is conducive to improving the energy density of supercapacitors. However, due to the unsatisfied stability of pure polyaniline and poor processing performance, the introduction of transition metal oxides(TMOs) can promote the oxidation-reduction reaction, accelerate the speed of electron transfer, and effectively improve the specific capacitance and circulation stability of electrode materials through the synergistic effect of the two components. In this paper, the new progress of TMOs/PANI nanocomposites such as Ruthenium, manganese, nickel and cobalt involved supercapacitors is reviewed, and the conductive mechanism of TMOs/PANI nanocomposites is summarized and concisely discussed.