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首页> 外文期刊>Physica Scripta: An International Journal for Experimental and Theoretical Physics >PbO_2 electrodeposited on graphite for hybrid supercapacitor applications
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PbO_2 electrodeposited on graphite for hybrid supercapacitor applications

机译:用于混合超级电容器应用的电沉积在石墨上的PbO_2

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摘要

PbO_2 is electrodeposited onto a graphite substrate, and coupled with activated carbon (AC) to construct a hybrid PbO_2/AC supercapacitor. The PbO_2/AC supercapacitor can be operated from 1.88 to 0.65 V, and delivers a specific capacitance of 63.2 F g~(-1) (based on the mass of two active materials) at a discharge current of 150 mA g ~(-1) (5 C rate) when the mass ratio of AC to PbO_2 is set at 2:1. The hybrid system exhibits attractive energy and power performance. The specific energy reaches 27 Wh kg~(-1) at a specific power of 152 W kg~(-1), and at a power of 691 W kg~(-1), the energy remains at 18 Wh kg~(-1). The use of a graphite current collector also ensures stability of the electrode in an H_2SO_4 environment. After 3000 deep cycles under 10 C, the capacity only fades 20% from its initial value.
机译:将PbO_2电沉积到石墨基板上,并与活性炭(AC)耦合以构建混合的PbO_2 / AC超级电容器。 PbO_2 / AC超级电容器的工作电压为1.88至0.65 V,在150 mA g〜(-1)的放电电流下可提供63.2 F g〜(-1)的比电容(基于两种活性材料的质量)。 (AC的质量比为PbO_2的质量比设为2:1时)(5 C速率)。混合动力系统展现出诱人的能源和动力性能。在152 W kg〜(-1)的比功率下,比能达到27 Wh kg〜(-1),在691 W kg〜(-1)的功率下,能量保持在18 Wh kg〜(- 1)。石墨集电器的使用还确保了电极在H_2SO_4环境中的稳定性。在10 C下进行3000次深循环后,容量仅比其初始值下降20%。

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