首页> 外文期刊>International Journal of Electrochemical Science >Porous Carbon Derived from Sweet Potato Biomass as Electrode for Zinc-ion Hybrid Supercapacitors
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Porous Carbon Derived from Sweet Potato Biomass as Electrode for Zinc-ion Hybrid Supercapacitors

机译:衍生自甘薯生物量的多孔碳作为锌离子杂交超级电容器的电极

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Zinc-ion hybrid supercapacitors (Zn-HSC) with outstanding capacity, durable longevity and low cost offer an opportunity for the development of electrochemical energy storage devices. Nevertheless, the development of Zn-HSC is still in its initial stage and there are many problems exist. In particular, the difficulty caused by restricted adsorptive capability of carbon cathode significantly limits the energy density of Zn-HSC. Herein, a novel sort of activated carbon (AC) with high surface area of 3424 m2 g-1 was obtained from a common biomass through economical method for pyrolysis activation. The ZnHSC demonstrated a high discharge capacitance (336 F g-1 at 0.5 A g-1 ), remarkable energy density (112 Wh kg-1 at 385 W kg-1 ), and 93% capacitance retention after 10000 cycles at 5 A g-1.
机译:锌离子混合超级电容器(Zn-HSC)具有出色的容量,耐用的长寿和低成本为电化学储能装置的开发提供了机会。 然而,Zn-HSC的发展仍处于初始阶段,存在许多问题。 特别地,由碳阴极的受限吸附能力引起的难度显着限制了Zn-HSC的能量密度。 这里,通过经济的热解激活方法从常见的生物量获得具有高表面积为3424m 2 G-1的新型活性炭(Ac)的新型活性炭(Ac)。 ZnHSC证明了高放电电容(336V-1,在0.5 A G-1),能量密度显着(112WH-1,在385Wk-1处为385 kg-1),并且在10000次下循环后93%的电容保留 -1。

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