期刊
NANOMATERIALS
卷 9, 期 3, 页码 -出版社
MDPI
DOI: 10.3390/nano9030377
关键词
supercapacitors; RuO2; Ti3C2 composite; phosphate ion modification
类别
资金
- National Natural Science Foundation of China [51879292, 51773106, 51708541]
- National Science Fund for Distinguished Young Scholars [51525903]
- Aoshan Talents Outstanding Scientist Program
- Qingdao National Laboratory for Marine Science and Technology [2017ASTCP-OS09]
Pseudocapitor materials, usually metal oxides, are used as active materials in an electrode to achieve high energy density. However, these kinds of materials often suffer from poor conductivity and high cost. Herein, a phosphate ion-modified RuO2/Ti3C2 composite is prepared via a chemical solution synthesis followed by an annealing process. In this composite material, Ti3C2 layers are introduced to improve the conductivity and the binary material is doped with phosphate ions into to increase the number of active reaction sites. As a result, the phosphate ion-modified RuO2/Ti3C2 delivers a high specific capacitance of 612.72 F g(-1) at a current density of 2 A g(-1) in H2SO4 electrolyte. What is more, the capacitance of the phosphate ion-modified RuO2/Ti3C2 can retain 97.95% (600.14 F g(-1)) of the original value even after 10,000 cycles at a current density of 2 A g(-1).
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