1
|
Guo Y, Zou X, Wei Y, Shu L, Li A, Zhang J, Wang R. Synthesis of organic hybrid ruthenium oxide nanoparticles for high-performance supercapacitors. Electrochim Acta 2023. [DOI: 10.1016/j.electacta.2023.141938] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
|
2
|
Sinha P, Kar KK. A flexible and high energy density -hydrous RuO2 and keratin-derived renewable carbon composite-based asymmetric supercapacitor in redox-mediated electrolytes. Electrochim Acta 2022; 435:141368. [DOI: 10.1016/j.electacta.2022.141368] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
3
|
Jun JH, Lee YK, Kim J, Song H, Jeong Y, Kim C, Lee JH, Choi IS. Large-Scale, Lightweight, and Robust Nanocomposites Based on Ruthenium-Decorated Carbon Nanosheets for Deformable Electrochemical Capacitors. ACS Appl Mater Interfaces 2022; 14:12193-12203. [PMID: 35245033 DOI: 10.1021/acsami.1c23455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Despite the increase in demand for deformable electrochemical capacitors as a power source for wearable electronics, significant obstacles remain in developing these capacitors, including their manufacturing complexity and insufficient deformability. With recognition of these challenges, a facile strategy is proposed to fabricate large-scale, lightweight, and mechanically robust composite electrodes composed of ruthenium nanoparticles embedded in freestanding carbon nanotube (CNT)-based nanosheets (Ru@a-CNTs). Surface-modified CNT sheets with hierarchical porous structures can behave as an ideal platform to accommodate a large number of uniformly distributed Ru nanoparticles (Ru/CNT weight ratio of 5:1) while improving compatibility with aqueous electrolytes. Accordingly, Ru@a-CNTs offer a large electrochemically active area, showing a high specific capacitance (∼253.3 F g-1) and stability for over 2000 cycles. More importantly, the exceptional performance and mechanical durability of quasi-solid-state capacitors assembled with Ru@a-CNTs and a PVA-H3PO4 hydrogel electrolyte are successfully demonstrated in that 94% of the initial capacitance is retained after 100 000 cycles of bending deformation and a commercial smartwatch is charged by multiple cells. The feasible large-scale production and potential applicability shown in this study provide a simple and highly effective design strategy for a wide range of energy storage applications from small- to large-scale wearable electronics.
Collapse
Affiliation(s)
- Jong Han Jun
- Department of Materials Science and Engineering, Seoul National University, Seoul 08826, Republic of Korea
| | - Yu-Ki Lee
- Department of Materials Science and Engineering, Seoul National University, Seoul 08826, Republic of Korea
| | - Juhee Kim
- Department of Materials Science and Engineering, Seoul National University, Seoul 08826, Republic of Korea
| | - Hyeonjun Song
- Department of Information Communication, Materials, and Chemistry Convergence Technology, Soongsil University, Seoul 06978, Republic of Korea
| | - Youngjin Jeong
- Department of Information Communication, Materials, and Chemistry Convergence Technology, Soongsil University, Seoul 06978, Republic of Korea
- Department of Organic Materials and Fiber Engineering, Soongsil University, Seoul 06978, Republic of Korea
| | - Changsoon Kim
- Department of Intelligence and Information, and Inter-University Semiconductor Research Center, Seoul National University, Seoul 08826, Republic of Korea
| | - Ji-Hoon Lee
- Department of Hydrogen Energy Materials, Surface & Nano Materials Division, Korea Institute of Materials Science (KIMS), Changwon, Gyeongnam 51508, Republic of Korea
| | - In-Suk Choi
- Department of Materials Science and Engineering, Seoul National University, Seoul 08826, Republic of Korea
- Research Institute of Advanced Materials (RIAM), Seoul National University, Seoul 08826, Republic of Korea
| |
Collapse
|