The portable and electric energy storage market has long been dominated by lithium-ion batteries (LIBs) and supercapacitors, surpassing other energy storage systems in their ability to provide higher energy and power.
However, in critical applications such as electric vehicles, there is a growing demand for a device that can efficiently produce both high power and high energy over a significant number of cycles. Meeting these rigorous standards presents new challenges for existing technologies, prompting researchers to explore alternative technologies for energy storage devices.
A promising strategy is to modify the high-conductive hard carbon anode, which exhibits excellent structural stability, to match it with an activated carbon cathode, thus creating a dual-carbon LIC (lithium-ion capacitor). In a recent study, a one-pot in-situ expansion and heteroatom doping strategy was employed to prepare sheet-like hard carbon, while the activated carbon was obtained through activation processes.
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