Self-Assembly Vertical Graphene-Based MoO<sub>3</sub> Nanosheets for High Performance Supercapacitors

oleh: Ao Cheng, Yan Shen, Tianzeng Hong, Runze Zhan, Enzi Chen, Zengrui Chen, Guowang Chen, Muyuan Liang, Xin Sun, Donghang Wang, Linchen Xu, Yu Zhang, Shaozhi Deng

Format: Article
Diterbitkan: MDPI AG 2022-06-01

Deskripsi

Supercapacitors have been extensively studied due to their advantages of fast-charging and discharging, high-power density, long-cycling life, low cost, etc. Exploring novel nanomaterial schemes for high-performance electrode materials is of great significance. Herein, a strategy to combine vertical graphene (VG) with MoO<sub>3</sub> nanosheets to form a composite VG/MoO<sub>3</sub> nanostructure is proposed. VGs as transition layers supply rich active sites for the growth of MoO<sub>3</sub> nanosheets with increasing specific surface areas. The VG transition layer further improves the electric contact and adhesion of the MoO<sub>3</sub> electrode, simultaneously stabilizing its volume and crystal structure during repeated redox reactions. Thus, the prepared VG/MoO<sub>3</sub> nanosheets have been demonstrated to exhibit excellent electrochemical properties, such as high reversible capacitance, better cycling performance, and high-rate capability.