Recent progress in the All-Gel-State supercapacitors
Chemical Engineering Journal(2023)
摘要
Supercapacitors (SCs) are promising energy storage devices for flexible electronics by virtue of the high power density, exceptional cycle life, and low maintenance cost. Typically, all-gel-state SCs based on conductive hydrogels (CHs) make a splash on account of their simplified configuration, remarkably flexibility, inherent deformation tolerance and diminished interfacial impedance. Herein, a comprehensive overview of the cuttingedge advances in all-gel-state SCs is provided, involving the fabrication strategies, multifunctionality, different configurations and perspectives. The fabrication strategies are systematically introduced, encompassing the assembly of CH-based electrodes and electrolytes and the in-situ deposition of electroactive materials on CH-based electrolytes. Subsequently, the multifuntional all-gel-state SCs are emphasized, such as highly stretchable and compressible, self-healing, and anti-freezing devices. Furthermore, sorts of configurations of all-gel-state SCs, comprised of 1D fiber-shaped and 2D planner structures, are represented. Last but not the least, the challenges and opportunities of such attractive all-gel-state SCs are concluded, navigating the advancement of flexible power electronics.
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关键词
Conductive hydrogels, All-gel-state supercapacitors, Construction strategies, Multifunctionality, Configurations
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