Synthesis of Multi-Heteroatom Doped Carbon Materials for High Energy Density Electric Double Layer Capacitors
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초록
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Electrochemical double layer capacitors with high energy density are a critical issue for novel electrochemical energy storage applications. To address this problem, heteroatom doping strategies into carbon matrix have attracted much attention due to their effective electrochemical properties. Here, we choose N, F, and B heteroatoms as doping sources to form highly synergistic effects during electrochemical energy storage performances. The N,F,B-doped carbon was synthesized through calcination of a carbon cloth composites coated with fluorinated polyamic acid in the presence of boric acid. The carbon cloth provides a current collector as well as a flexible substrate to facilitate the wearable energy storage devices. The synthesized carbon materials doped with N,F,B-heteroatoms delivers a high specific capacitance, high rate capability, and long cycle life.