High surface area electrochemically stable nanocomposites based on TiO2 aerogels incorporated with conductive polymers

IF 2.2 4区化学 Q3 CHEMISTRY, PHYSICAL

Colloid and Polymer Science Pub Date : 2025-01-17 DOI:10.1007/s00396-025-05378-8

Joseane C. Bernardes, Marina C. P. Luz, Kananda M. Degues, Daliana Müller, Carlos R. Rambo

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Abstract

In this work, nanocomposites based on TiO₂ aerogels incorporated with conductive polymers (PEDOT:PSS and PANI) were synthesized in situ. The evaluation of the electrochemical properties of nanocomposites of titania aerogels and conductive polymers was carried out using cyclic voltammetry, impedance spectroscopy, and galvanized charge–discharge methods. The nanocomposites exhibited a highly stable electrochemical cycling performance after incorporation with both PANI and PEDOT. TiO₂/PEDOT and TiO₂/PANI aerogels are in the region expected for application in Ragone graph supercapacitors with the highest specific capacitance at concentrations of 30% PEDOT of 1100 mF/g and a surface area of 546 m²/g, and 30% PANI with 1200 mF/g and a specific surface area of 606 m²/g, which is remarkably high for hybrid nanocomposites.

Graphical Abstract

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基于TiO2气凝胶与导电聚合物结合的高表面积电化学稳定纳米复合材料

在本工作中，以二氧化钛气凝胶为基础，结合导电聚合物（PEDOT:PSS和PANI）原位合成了纳米复合材料。采用循环伏安法、阻抗谱法和镀锌充放电法对二氧化钛气凝胶和导电聚合物纳米复合材料的电化学性能进行了评价。加入聚苯胺和聚苯胺后，纳米复合材料具有高度稳定的电化学循环性能。TiO2/PEDOT和TiO2/PANI气凝胶有望应用于Ragone图超级电容器中，30% PEDOT浓度为1100 mF/g，比表面积为546 m2/g时比电容最高，30% PANI浓度为1200 mF/g，比表面积为606 m2/g时比电容最高，这对于混合纳米复合材料来说是非常高的。图形抽象

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来源期刊

Colloid and Polymer Science 化学-高分子科学

CiteScore

4.60

自引率

4.20%

发文量

111

审稿时长

2.2 months

期刊介绍： Colloid and Polymer Science - a leading international journal of longstanding tradition - is devoted to colloid and polymer science and its interdisciplinary interactions. As such, it responds to a demand which has lost none of its actuality as revealed in the trends of contemporary materials science.