Low-Cost and Eco-Friendly method for activating carbon felt using hypochlorite for electrochemical applications

IF 4.1 3区化学 Q1 CHEMISTRY, ANALYTICAL Journal of Electroanalytical Chemistry Pub Date : 2024-11-19 DOI:10.1016/j.jelechem.2024.118816

Branimir N. Grgur , Vuk V. Radmilović , Houcheng Zhang , Lazar Rakočević , Aleksandra S. Popović

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Abstract

Pristine carbon felt is activated and functionalized through a cost-effective, eco-friendly method by immersion in a commercial 5 wt% hypochlorite solution. Electrochemical analyses, including cyclic voltammetry, galvanostatic charge–discharge tests, capacitance, and impedance measurements at 1 Hz, reveal that the activated carbon felt exhibits a twenty-fold enhancement in performance compared to its pristine counterpart. Pristine and activated carbon felt are characterized using scanning electron microscopy, X-ray photoelectron spectroscopy, contact angle measurement, and water uptake tests confirming the significant changes in material properties. To further validate the activation process, polypyrrole is galvanostatically electrodeposited on both pristine and activated carbon felts, with their electrochemical behaviors serving as a model system. The findings indicate a substantial improvement of activated carbon felt, with fourth times increase in capacity, highlighting the potential for advanced applications.

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在电化学应用中使用次氯酸盐活化碳毡的低成本环保方法

通过将原始碳毡浸泡在 5 wt% 的商用次氯酸盐溶液中，采用一种具有成本效益的环保方法对其进行活化和功能化。电化学分析（包括循环伏安法、电静态充放电试验、电容和 1 Hz 阻抗测量）表明，与原始碳毡相比，活化碳毡的性能提高了 20 倍。使用扫描电子显微镜、X 射线光电子能谱、接触角测量和吸水测试对原始碳毡和活性碳毡进行了表征，证实了材料性能的显著变化。为了进一步验证活化过程，在原始碳毡和活化碳毡上对聚吡咯进行了静电电沉积，并将它们的电化学行为作为模型系统。研究结果表明，活性碳毡的性能有了大幅提高，容量增加了四倍，这凸显了其在先进应用领域的潜力。

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来源期刊

Journal of Electroanalytical Chemistry 化学-电化学

CiteScore

7.80

自引率

6.70%

发文量

912

审稿时长

2.4 months

期刊介绍： The Journal of Electroanalytical Chemistry is the foremost international journal devoted to the interdisciplinary subject of electrochemistry in all its aspects, theoretical as well as applied. Electrochemistry is a wide ranging area that is in a state of continuous evolution. Rather than compiling a long list of topics covered by the Journal, the editors would like to draw particular attention to the key issues of novelty, topicality and quality. Papers should present new and interesting electrochemical science in a way that is accessible to the reader. The presentation and discussion should be at a level that is consistent with the international status of the Journal. Reports describing the application of well-established techniques to problems that are essentially technical will not be accepted. Similarly, papers that report observations but fail to provide adequate interpretation will be rejected by the Editors. Papers dealing with technical electrochemistry should be submitted to other specialist journals unless the authors can show that their work provides substantially new insights into electrochemical processes.