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Abstract: High energy consumption and, at the same time, the depletion of fossil fuels have directed the focus of scientific interest toward alternative energy sources of renewable origins. Technologies introduced to reduce emissions of toxic and greenhouse gases, considered “clean” energy resources, include processes based on wind power, water flow, solar radiation, and geothermal solutions. On the other hand, the unexpected meteorological conditions affect efficiency. A solution to this problem related to these sustainable energy sources has been seen in the combination of various energy storage devices. Due to the comparable electrochemical performances to conventional capacitors and batteries, electrochemical capacitors, also known as supercapacitors or ultracapacitors, attract significant interest in the possibility of their application as renewable energy storage devices. High energy per unit volume and rapid charging/discharging cycles make electrochemical capacitors suitable for applications in electric and hybrid vehicles. Supercapacitors encounter applications such as energy storage and power backup, electric buses and trains, portable devices, defibrillators, power tools, and much more, emphasizing their advantages, mainly when carbon-based materials are used as electrode components in electrochemical capacitors. Their low cost, availability, and sustainability are among the main benefits of activated carbons. Biomass precursors, invoving mostly by-products from food industry, as coffee grounds, various seeds, and shells, for the synthesis of activated carbon has lately attracted additional attention. This study focuses on the characteristics of bio-based activated carbons and their potential uses in electrochemical capacitors.
Keywords: carbon electrodes, activated carbon, biomass precursor, electrochemical capacitors
| Scientific Sections | Materials |
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