Recent progress on freestanding carbon electrodes for flexible supercapacitors
The construction of flexible supercapacitors with high electrochemical performance and excellent mechanical proper-ties to power flexible electronics and sensors is very important. Freestanding electrodes play a crucial role in flexible supercapacitors, and carbon has been widely used in this role because of its high electronic conductivity, tunable porosity, adjustable surface area, ex-cellent mechanical properties, low density and easy functionalization. It is also abundant and cheap. Recent progress on the fabrica-tion of freestanding carbon electrodes based on various carbon materials for use in flexible supercapacitors is summarized, and re-maining challenges and future opportunities are discussed.
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