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Phosphate Ion-Modified RuO2/Ti3C2 Composite as a High-Performance Supercapacitor Material

1,2,3, 4 and 1,3,4,*
Key Laboratory of Marine Environmental Corrosion and Bio-Fouling, Institute of Oceanology, Chinese Academy of Sciences, 7 Nanhai Road, Qingdao 266071, China
University of Chinese Academy of Science, Beijing 100049, China
Qingdao National Laboratory for Marine Science and Technology, Wenhai Road, Aoshanwei, Jimo, Qingdao 266237, China
School of Chemical Engineering and Technology, Sun Yat-sen University, Zhuhai 519082, China
Author to whom correspondence should be addressed.
Nanomaterials 2019, 9(3), 377;
Received: 30 January 2019 / Revised: 27 February 2019 / Accepted: 27 February 2019 / Published: 5 March 2019
PDF [3490 KB, uploaded 5 March 2019]


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. View Full-Text
Keywords: supercapacitors; RuO2/Ti3C2 composite; phosphate ion modification supercapacitors; RuO2/Ti3C2 composite; phosphate ion modification

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Zhao, J.; Liu, F.; Li, W. Phosphate Ion-Modified RuO2/Ti3C2 Composite as a High-Performance Supercapacitor Material. Nanomaterials 2019, 9, 377.

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