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首页> 外文期刊>RSC Advances >High performance asymmetric supercapacitor based on CoAl-LDH/GF and activated carbon from expanded graphite
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High performance asymmetric supercapacitor based on CoAl-LDH/GF and activated carbon from expanded graphite

机译：基于煤LDH / GF的高性能不对称超级电容器和来自膨胀石墨的活性炭

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An asymmetric supercapacitor fabricated with a CoAl-layered double hydroxide/graphene foam (LDH/GF) composite as the positive electrode and activated carbon derived from expanded graphite (AEG) as the negative electrode in aqueous 6 M KOH electrolyte is reported. This CoAl-LDH/GF//AEG cell achieved a specific capacitance of 101.4 F g ~(?1) at a current density of 0.5 A g ~(?1) with a maximum energy density as high as 28 W h kg ~(?1) and a power density of 1420 W kg ~(?1) . Furthermore, the supercapacitor also exhibited an excellent cycling stability with ～100% capacitance retention after 5000 charging–discharging cycles at a current density of 2 A g ~(?1) . The results obtained show the potential use of the CoAl-LDH/GF//AEG material as a suitable electrode for enhanced energy storage in supercapacitors.
机译：报道，用煤层双氢氧化物/石墨烯泡沫（LDH / GF）复合物制造的不对称超级涂物作为正极和衍生自膨胀石墨（AEG）的活性炭，作为6M KOH电解质中的负极。该煤LDH / GF // AEG电池以0.5Ag〜（α1）的电流密度，最大能量密度高达28WH kg〜（ ？1）和1420W kg〜（α1）的功率密度。此外，超级电容器还具有优异的循环稳定性，在5000充电排出循环之后的电流密度为2A g〜（α1）。获得的结果显示煤LDH / GF // AEG材料作为合适的电极，用于增强超级电容器中的能量储存。

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