This work studied the electro-polymerisation of 3,4-ethylenedioxythiophene (EDOT) and its electrochemical behavior in Lewis acidic, neutral and basic chloroaluminate ionic liquid 1-ethyl-3-methylimidazolium chloride aluminum chloride (EMImCl-AlCl₃) by cyclic voltammetry. It was found that the electro-polymerisation on vitreous carbon only occurs in Lewis neutral EMImCl-AlCl₃ as a dark blue-violet film whereas the electro-polymerisation in a Lewis acidic or basic compositions is not possible due to the interactions between the conductive polymer and the ionic liquid as well as the potential stability limits of the electrolyte. PEDOT films synthesised in Lewis neutral ionic liquid were tested in monomer-free Lewis acidic, basic and neutral EMImCl-AlCl₃ and show different doping and de-doping behavior for chloride ionic species. The PEDOT films in a Lewis neutral composition showed higher doping levels due to the higher potential stability window, up to 2.6 V vs. Al|Al(III) than in a Lewis acidic and basic solutions. Furthermore, it was shown that the doping and de-doping levels are predefined during the electro-polymerisation of PEDOT. The anion doping and de-doping reaction reached 97% reversibility in the neutral composition, which suggests that PEDOT is a suitable electrode material to store charged species in this media and could be used in rechargeable energy storage devices.

这项工作通过循环伏安法研究了3,4-乙二氧基噻吩（EDOT）的电聚合及其在路易斯酸性，中性和碱性氯铝酸盐离子液体1-乙基-3-甲基咪唑氯化铝（EMImCl-AlCl ₃）中的电化学行为。已经发现，在玻璃碳上的电聚合仅在路易斯中性EMImCl-AlCl ₃中以深蓝紫色膜形式发生，而在路易斯酸性或碱性组合物中由于电导性聚合物之间的相互作用而无法进行电聚合。离子液体以及电解质的潜在稳定性极限。在无单体Lewis酸性，碱性和中性EMImCl-AlCl ₃中测试了在Lewis中性离子液体中合成的PEDOT膜并显示出氯离子种类不同的掺杂和去掺杂行为。Lewis中性成分中的PEDOT膜由于较高的电位稳定性窗口而显示出较高的掺杂水平，最高为2.6 V vs .。Al | Al（III）比在路易斯酸性和碱性溶液中。此外，已经表明，在PEDOT的电聚合期间预先确定了掺杂和去掺杂水平。阴离子掺杂和去掺杂反应在中性成分中可逆性达到97％，这表明PEDOT是一种适合在这种介质中存储带电物质的电极材料，可用于可再充电能量存储设备中。