Ultrahigh-rate and High-density Lithium-ion Capacitors through Hybriding Nitrogen-enriched Hierarchi

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Supercapacitors,also called electrical double layer capacitors(EDLCs),are able to achieve high power uptake or delivery within seconds through fast physical ion adsorption/desorption.However,the energy density of supercapacitors is still an order of magnitude less than that of lithium ion batteries(LIBs),which is too low to satisfy the practical requirements.
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