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Porous graphene paper for supercapacitor applications 被引量:3

Porous graphene paper for supercapacitor applications
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摘要 Graphene paper shows a great promise for the electrical energy storage. However, the high stability, purity and specific surface area have become stringent requirements for supercapacitor applications. Finding methods to tackle these problems is rather challenging. Here, we develop a facile method to prepare porous graphene papers with a thickness 0.5 mm by a thermal shock to the layer-structure graphene paper self-assembled on Cu foil under nitrogen flowing. The as-prepared porous graphene paper exhibits a large specific capacitance of 100 Fg-1at the scan rate of 100 mVs-1with high stability and purity without any residual chemical reagents, showing a promising potential for supercapacitor applications. The high electrochemical properties are mainly attributed to the high-specific area and the improved conductivity of the porous graphene paper performed by the multieffect of reducing, cleaving and expanding to the layer-structure graphene paper by high-energy thermal heating during the thermal shock process. This work paves a pathway to the facile preparation of porous graphene paper for supercapacitor applications. Graphene paper shows a great promise for the electrical energy storage. However, the high stability, purity and specific surface area have become stringent requirements for supercapacitor applications. Finding methods to tackle these problems is rather challenging. Here, we develop a facile method to prepare porous graphene papers with a thickness 0.5 mm by a thermal shock to the layer-structure graphene paper self-assembled on Cu foil under nitrogen flowing. The as-prepared porous graphene paper exhibits a large specific capacitance of 100 Fg-1at the scan rate of 100 mVs-1with high stability and purity without any residual chemical reagents, showing a promising potential for supercapacitor applications. The high electrochemical properties are mainly attributed to the high-specific area and the improved conductivity of the porous graphene paper performed by the multieffect of reducing, cleaving and expanding to the layer-structure graphene paper by high-energy thermal heating during the thermal shock process. This work paves a pathway to the facile preparation of porous graphene paper for supercapacitor applications.
出处 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2017年第8期793-799,共7页 材料科学技术(英文版)
基金 supported financially by the National Nature Science Foundation of China(21173041) the Key Program of the National Natural Science Foundation of China(51438003) the National Basic Research Program of China(2015CB655105) the Open Research Fund of SEU-JGRI Joint Research Center of Advanced Carbon Materials the Opening Project of Jiangsu Key Laboratory of Advanced Metallic Materials the Fundamental Research Funds for the Central Universities the Graduate Student Research and Innovation Program of Jiangsu Regular Universities,China(KYLX16 0196)
关键词 Porous graphene paper SELF-ASSEMBLING Thermal shock Electrochemical properties SUPERCAPACITOR Porous graphene paper Self-assembling Thermal shock Electrochemical properties Supercapacitor
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