期刊
RSC ADVANCES
卷 6, 期 2, 页码 1686-1693出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5ra23785h
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资金
- Basic Science Research Program through the National Research Foundation of Korea (NRF) - Ministry of Science, ICT & Future Planning [2015R1A2A2A03006558]
- National Research Foundation of Korea [2015R1A2A2A03006558] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
In this work, a simple and efficient spray pyrolysis process was developed in order to easily control the microstructure of carbon particles prepared from sucrose as a carbon source. The key idea of this work is to modify the sucrose-based aqueous spray solution with organic additives, polyethylene glycol (PEG) and carbohydrazide, as a structure-controlling agent. It was found that the use of both PEG and carbohydrazide as the organic additives makes it possible to produce carbon nanosheets similar to multi-layer graphene oxides. In addition, the organic additives were helpful for increasing the specific surface area of carbon powders. Carbon nanosheets had improved ion-sorption capacitance compared with porous carbon spheres with the filled morphology or the hollow structure due to the increase of ion-accessible surface area. From the electrochemical characterization, the carbon nanosheets with the structure like a graphene oxide, which could be successfully synthesized by the suggested new strategy, were revealed to be most profitable for electrode materials with high ion-sorption capacitance.
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