| 학회 |
한국화학공학회 |
| 학술대회 |
2022년 봄 (04/20 ~ 04/23, 제주국제컨벤션센터) |
| 권호 |
28권 1호, p.518 |
| 발표분야 |
[주제 8] 에너지 저장 |
| 제목 |
An Aqueous High-Performance rGO/polyoxometalates// MXene Hybrid Supercapacitor |
| 초록 |
Two-dimensional titanium carbide, MXene, is an attractive pseudocapacitive electrode material that exhibits its highest capacitance at a negative potential in an aqueous protic electrolyte. Developing hybrid supercapacitors using diverse cathode materials is the best way to identify a material with high energy density in aqueous electrolytes. However, it is difficult to find redox-active positive cathode materials that are suitable for use with MXene in an H2SO4 electrolyte. Here, 2D nanocomposite of reduced graphene oxide decorated with phosphomolybdic acid polyoxometalates are reported as promising cathode materials suitable for use against an MXene anode. An all-redox active HSC cell with rGO-POM cathode and MXene anode can deliver a maximum specific energy and power of 50.46 Wh/kg and 7000 W/kg, respectively, with capacitance retention of 87.12 % over 10,000 cycles and superb energy and coulombic efficiency over all applied current densities. These results suggest that the rGO-POMs cathode can be potentially coupled with an MXene anode in a protic electrolyte to enhance the electrochemical parameters of the HSC cells. |
| 저자 |
소남1, 황승규1, Nilesh R. Chodankar2, 허윤석1
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| 소속 |
1인하대, 2동국대 |
| 키워드 |
에너지 환경(Energy and Environment) |
| E-Mail |
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| 원문파일 |
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