Metal-organic frameworks as highly efficient electrodes for long cycling stability supercapacitors. (20th May 2021)

• Record Type: Journal Article
• Authors: Cao, Yujuan; Yang, Wu; Wang, Mingyue; Wu, Ning; Zhang, Longwen; Guan, Qixia; Guo, Hao
• Is Part Of: International journal of hydrogen energy. Volume 46:Number 35(2021)
• Page Start: 18179
• Page End: 18206
• Publication Date: 2021-05-20
• Subjects: Metal-organic frameworks -- Cycling stability -- Electrode materials -- Supercapacitors; Hydrogen as fuel -- Periodicals; Hydrogène (Combustible) -- Périodiques; Hydrogen as fuel; Periodicals; 665.81
• DOI: 10.1016/j.ijhydene.2021.03.003
• Languages: English
• ISSNs: 0360-3199

Abstract

Abstract: Among a large variety of energy storage technologies, supercapacitors possess special advantages such as rapid charge/discharge, high power density, safety, and environmental friendliness to meet the requirement of specific applications. The common electrode materials of supercapacitors, including porous carbon, conductive polymers, and metal oxides/hydroxides, have their own benefits and drawbacks in energy density and stability. Owing to the big surface area and controllable porosity, the metal-organic frameworks (MOFs) have been explored as important candidates for supercapacitor applications. This mini-review focuses on the recent advances of MOF-based materials including pristine MOFs, MOFs composite materials, and MOF-derived materials in the development of long cycling life supercapacitors. The devices discussed here mean those with capacitive retention rates of more than 90% after 10, 000 cycles and high energy density. In addition, we also describe the fundamental knowledge of supercapacitors, highlight the stabilization mechanism of MOFs, and propose the strategies to enhance the stability of MOF-based supercapacitor electrodes. Highlights: The fundamental knowledge of supercapacitor is illustrated. The fundamental mechanisms of MOFs stabilization are emphasized. Recent advances of MOF-based long cycling stability supercapacitors are reviewed. The strategies to enhance the stability of MOF-based supercapacitors are proposed.