Excellent performance MWCNTs-GONRs/Ni(OH)2 electrode for outstanding supercapacitors. Issue 15 (15th October 2019)

• Record Type: Journal Article
• Authors: Qiu, Hengrui; An, Shengli; Sun, Xuejiao; Yang, Huimin; Zhang, Yongqiang; He, Wenxiu
• Is Part Of: Ceramics international. Volume 45:Issue 15(2019)
• Page Start: 18422
• Page End: 18429
• Publication Date: 2019-10-15
• Subjects: MWCNTs-GONRs -- α-Ni(OH)2 -- Electrochemical performance -- Supercapacitors; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2019.06.059
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: Due to the unconventional properties of MWCNTs-GONRs (multiwalled carbon nanotubes-graphene oxide nanoribbons), we have tried to use it as a carbon resource for supercapacitors. MWCNTs-GONRs/Ni(OH)2 electrode was obtained by hydrothermal method. Velvet α-Ni(OH)2 was prepared above NF (nickel-foam) loaded with MWCNTs-GONRs. This layered design can effectively promote the diffusion of ions and increase the active site for MWCNTs-GONRs/Ni(OH)2 electrode, thus enhancing the electrochemical performance. The electrode exhibits extraordinary electrochemical performances in electrochemical testing, such as supernal specific capacitance (1713.2 F g −1 ) and prominent working time. In addition, supercapacitors was assembled with MWCNTs-GONRs/Ni(OH)2 and active carbon as materials. Which represents a prominent energy density (41.23 Wh kg −1 ), high power (6.80 kW kg −1 ) and prominent cycling stability property (95.18%, 3000 times). The electrode prepared in this work provides a clue to enlighten people for energy storage.