Waste to wealth: A sustainable and flexible supercapacitor based on office waste paper electrodes
Publication in refereed journal

香港中文大學研究人員

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摘要In order to develop a low cost, sustainable, and eco-friendly energy storage device, we demonstrated an all solid state symmetric flexible supercapacitor based on the office waste paper fibers -reduced graphene oxide-manganese dioxide (PF-RGO-MnO2) which acts as both the positive and negative electrodes. With the assistance of facile solution phase assembly and vacuum filtration method, the flexible PF-RGO-MnO2 electrodes with high physical flexibility and excellent mechanical strength were fabricated directly without any binder agents. Furthermore, owing to the advantages of the lager surface area and microfibers of the each single paper fiber, the PF-based hybrid flexible electrodes show high specific capacitance of 410 F g(-1) at 0.8 A g(-1), and retain 93% capacitance over 5000 cycles, indicating outstanding electrochemical performance. In addition, the assembled solid-state symmetric supercapacitors exhibit high energy density (19.6 Wh kg(-1) at 400 W kg(-1)) and excellent cycling stability of 85.3% retention even after 2000 folding and bending cycles. These results propose a renewable way to turn "waste" into wealth, and provide a new method to fabricate the sustainable and freestanding paper based supercapacitor for application in the flexible energy storage devices.
著者Su HB, Zhu PL, Zhang LC, Zhou FR, Li G, Li TX, Wang Q, Sun R, Wong CP
期刊名稱JOURNAL OF ELECTROANALYTICAL CHEMISTRY
出版年份2017
卷號786
出版社ELSEVIER SCIENCE SA
頁次28 - 34
國際標準期刊號1572-6657
電子國際標準期刊號1873-2569
語言英式英語
關鍵詞Sustainable supercapacitor, Office waste paper, Graphene oxide sheets, MnO2-nanowires
Web of Science 學科類別Chemistry, Analytical;Electrochemistry;Chemistry;Electrochemistry

上次更新時間 2020-22-10 於 02:34