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Potassium ion batteries (KIBs) are drawing intensive attention as the next-generation energy storage technology, owning to their similar electrochemical properties to lithium system and rich abundance of potassium resources. The carbonaceous materials with low cost, nontoxicity and high safety have been considered as promising candidates for KIBs anodes. However, they still suffer from several problems,...
A transition‐metal‐free asymmetric supercapacitor (ASC) is successfully fabricated based on an earth‐abundant biomass derived redox‐active biomolecule, named lawsone. Such an ASC exhibits comparable or even higher energy densities than most of the recently reported transition‐metal‐based ASCs, and this green ASC generation from renewable resources is promising for addressing current issues of electronic...
On page 4683, H. Wang L. Guo, and co‐workers present a novel transition‐metal‐free asymmetric supercapacitor (ACS) based on a biomolecule named lawsone (2‐hydroxy‐1,4‐naphthoquinone), which is a natural component derived from henna. The ASC shows comparable or even higher energy densities compared to those of reported transition‐metal‐based ASCs, and provides a new strategy for the generation of versatile...
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