Kubicka Marcelina, Bakierska Monika, Chudzik Krystian, Molenda Marcin
Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, Poland.
Nanomaterials (Basel). 2020 Sep 11;10(9):1811. doi: 10.3390/nano10091811.
In this work, we investigated the influence of gum arabic (GA) as a structuring additive, on the electrochemical behavior of bio-derived carbon aerogels (CAGs). Modified carbonaceous materials were prepared by the gelatinization process of potato starch (PS) with the addition of GA in various quantities, followed by the thermal treatment of the obtained gels in an inert gas atmosphere. The obtained anode materials were examined by X-ray diffraction (XRD), elemental analysis (EA), galvanostatic charge/discharge tests (GCDT), extensive cycling (LT-GCDT) and cyclic voltammetry (CV) methods. The highest electrochemical performance was achieved for carbon aerogel material, in which 1% / GA was added. The results showed that the proper composition of carbon precursor with a structuring promoter improves the rheological properties of starch gel and stabilizes the final aerogel structure affecting CAG functional properties.
在本工作中，我们研究了作为结构添加剂的阿拉伯胶（GA）对生物衍生碳气凝胶（CAG）电化学行为的影响。通过在马铃薯淀粉（PS）糊化过程中添加不同量的GA制备改性碳质材料，随后在惰性气体气氛中对所得凝胶进行热处理。通过X射线衍射（XRD）、元素分析（EA）、恒电流充/放电测试（GCDT）、长时间循环（LT-GCDT）和循环伏安法（CV）等方法对所得阳极材料进行了检测。添加1%GA的碳气凝胶材料具有最高的电化学性能。结果表明，碳前驱体与结构促进剂的适当组成改善了淀粉凝胶的流变性能，并稳定了最终气凝胶结构，从而影响CAG的功能特性。
