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首页> 外文期刊>Physical chemistry chemical physics: PCCP >Improving electrochemical performance of polyaniline by introducing carbon aerogel as filler
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Improving electrochemical performance of polyaniline by introducing carbon aerogel as filler

机译：通过引入碳气凝胶作为填料改善聚苯胺的电化学性能

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摘要

Polyaniline (PANI) with carbon aerogel (CA) as conducting filler has been synthesized by an in situ chemical oxidative polymerization method. Scanning electron microscopy, infrared spectra, cyclic voltammetry and X-ray diffraction indicate that the three-dimensional carbon nano-network of CA is entirely buried inside the PANI matrix and its introduction basically does not change the structure of PANI. The electrochemical performances of the as-prepared PANI materials with CA filler are evaluated by means of galvanostatic charge-discharge test, cyclic voltammetry and electrochemical impedance spectroscopy. It is found that the electrochemical performances of PANI are notably improved due to the introduction of CA filler. For example, when operating at a large current density of 50 mA cm~(-2), CA-modified PANI with the optimal CA/aniline ratio of 1.0 wt% exhibits a specific capacitance as high as 226 F g~(-1), whereas neat PANI has only 89 F g~(-1). The CA modification mechanism of PANI has been discussed in detail.
机译：采用原位化学氧化聚合法合成了以碳气凝胶（CA）为导电填料的聚苯胺（PANI）。扫描电子显微镜，红外光谱，循环伏安法和X射线衍射表明，CA的三维碳纳米网络完全埋在PANI基体内，其引入基本上不会改变PANI的结构。通过恒电流充放电试验，循环伏安法和电化学阻抗谱法评估了制备的含CA填料的PANI材料的电化学性能。发现由于引入了CA填料，PANI的电化学性能得到了显着改善。例如，当在50 mA cm〜（-2）的大电流密度下运行时，具有1.0 wt％的最佳CA /苯胺比率的CA改性PANI的比电容高达226 F g〜（-1） ，而纯PANI只有89 F g〜（-1）。已详细讨论了PANI的CA修改机制。

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