期刊
NANOMATERIALS
卷 12, 期 12, 页码 -出版社
MDPI
DOI: 10.3390/nano12122057
关键词
supercapacitors; vertical graphene; molybdenum trioxide; composite VG; MoO3 nanosheets; active sites
类别
资金
- National Natural Science Foundation of China [52072416, 51702372]
- Guangdong Basic and Applied Basic Research Foundation [2021A1515012636]
- Science and Technology Department of Guangdong Province
- Guangzhou Municipal Science and Technology Bureau [202102020810]
- Fundamental Research Funds for the Central Universities, Sun Yat-sen University [22lgqb18]
A strategy to combine vertical graphene (VG) with MoO3 nanosheets to form a composite structure has been proposed, the prepared VG/MoO3 nanosheets exhibit excellent electrochemical properties, such as high reversible capacitance, better cycling performance, and high-rate capability.
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 MoO3 nanosheets to form a composite VG/MoO3 nanostructure is proposed. VGs as transition layers supply rich active sites for the growth of MoO3 nanosheets with increasing specific surface areas. The VG transition layer further improves the electric contact and adhesion of the MoO3 electrode, simultaneously stabilizing its volume and crystal structure during repeated redox reactions. Thus, the prepared VG/MoO3 nanosheets have been demonstrated to exhibit excellent electrochemical properties, such as high reversible capacitance, better cycling performance, and high-rate capability.
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