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With the increasing demand of sustainable and eco‐friendly resources, it is very attractive to use waste leaves for activated carbon (AC) preparation that can be used in supercapacitors. Considering the practically collected leaves are commonly in mixed nature, and extra efforts are needed to sort these mixtures, we here report the first preparation of AC using mixed leaves from different plants,...
The flexible ultrathin all-solid-state supercapacitors with good electrochemical and mechanical performance were fabricated by the facile methods. The single-wall carbon nanotubes (SWCNTs)–polyaniline (PANI) film electrodes and poly(vinyl alcohol) (PVA)/H3PO4 electrolyte film were prepared by spray-printing and spin-coating strategies, respectively. Thus, the thickness of a supercapacitor is only...
A novel stereoscopic snowflake-like CoO material is synthesized via a simple two-step process, including the hydrothermal process for the formation of the stereoscopic snowflake-like Co(OH)F as precursor and thermal conversion process to CoO without altering the original shape of the precursor. The possible formation mechanism of the stereoscopic snowflake-like morphology of CoO was investigated...
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