What is it about?
In this paper, we propose the use of HA as a hydrophilic material in the composite. We have previously demonstrated [16] that the composite of GO and HA forms a stable suspension in water. Two of the objectives of the present work are to reduce the suspension using hydrazine to stabilize it and to fabricate conductive films using this suspension. In particular, hydrazine reduction of the composite yielded a dry powder that could be used for the preparation of water-based conductive ink, which was then used for the printing of conductive film electrodes.
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Why is it important?
Highly conductive carbons are required to fabricate high-performance supercapacitors . Thus, graphene-based materials and graphitised carbons are potential candidates for electrode materials in supercapacitors . It has been reported that humic acid (HA)-derived carbon has a well-developed graphitised phase, which is a good electronic conductor. A composite of HA-derived carbon and rGO could be a good candidate for electrode materials for electrochemical capacitors.
Perspectives
I hope that reduced graphene oxide can be used as electrodes in a symmetric supercapacitor with a significantly higher capacity than that of commercially available supercapacitors based on activated carbon
Evgeny Kabachkov
Institute of the Problems of Chemical Physics Russian Academy of Sciences
Read the Original
This page is a summary of: Preparation of graphene oxide-humic acid composite-based ink for printing thin film electrodes for micro-supercapacitors, Journal of Alloys and Compounds, September 2017, Elsevier,
DOI: 10.1016/j.jallcom.2017.09.249.
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