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首页> 外文期刊>Journal of Energy Storage >Potassium-ion aqueous supercapattery composed by solar carbon and nickel-zinc prussian blue analogue
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Potassium-ion aqueous supercapattery composed by solar carbon and nickel-zinc prussian blue analogue

机译：由太阳能碳和镍锌普鲁士蓝色模拟组成的钾离子水性超级换热

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摘要

Hybrid energy storage devices, currently known as supercapatteries, combine electrodes with two different energy storage mechanisms, double-layer and fast-kinetics faradaic processes, to deliver high specific energy at high specific power. Here, an eco-friendly synthetic route is employed to obtain negative (solar carbon) electrode, and a soft-chemistry route to synthesize positive (nickel-zinc hexacyanoferrate) electrode, to assemble a-ion aqueous supercapattery. Activated carbon was synthesized by pyrolysis of agro-industrial waste composed by agave angustifolia leaves in a solar furnace, and mixed nickel-zinc hexacyanoferrate was prepared by simple chemical precipitation. Conventional three-electrode characterization of active materials showed that both materials exhibit similar rate capability and charge storage capacities. A supercapattery was obtained when combining these two electrodes, delivering specific energies of 9.163 W h kg(-1) and 6.444 W h kg(-1) at specific power values of 0.153 kW kg(-1) and 5.638 kW kg(-1), respectively. The assembled K-ion energy storage device retained 85% of the initial capacitance after 5000 cycles (at 2.5 Ag-1), with a coulombic efficiency close to 100%.
机译：混合能量存储设备，当前称为超级涂布器，将电极与两个不同的能量存储机构，双层和快速动力学游览过程相结合，以在高特定功率下提供高特定能量。这里，采用环融合的合成途径来获得负（太阳碳）电极，以及用于合成阳性（镍锌己锌）电极的软化学途径，组装离子水性超级换热型。通过在太阳能炉中的龙舌兰夜蛾组成的农业工业废物的热解合成活性炭，通过简单的化学沉淀制备混合镍锌己酰甲酸酯。活性材料的常规三电极表征显示，两种材料表现出类似的速率能力和电荷存储容量。在将这两个电极组合时，在0.153 kW kg（-1）和5.638 kW kg（-1）的特定功率值下提供9.163 W H kg（-1）和6.444WH kg（-1）的特定能量时获得超级换热件。 ）， 分别。组装的k离子能量存储装置在5000个循环（在2.5 ag-1）后保留了85％的初始电容，并且库仑效率接近100％。

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