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首页> 外文会议>Batteries and energy technology (General) - 217th ECS meeting >Size Effects in Ni/Ni(OH)_2 Nanomaterials for Electrochemical Capacitors
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Size Effects in Ni/Ni(OH)_2 Nanomaterials for Electrochemical Capacitors

机译：Ni / Ni（OH）_2纳米材料在电化学电容器中的尺寸效应

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摘要

Electrochemical capacitors based on redox-active metal oxides show great promise for many energy-storage applications. These materials store charge through both electric double-layer charging and faradaic reactions in the oxide. The dimensions of the oxide nanomaterials have a strong influence on the performance of such capacitors. Not just due to surface area effects, which influence the double-layer capacitance, but also through bulk electrical and ionic conductivities. Ni(OH)2 is a prime candidate for such applications, due to low cost and high theoretical capacity. We have examined the relationship between diameter and capacity for Ni/Ni(OH)_2 nanorods. Specific capacitances of up to 511 F/g of Ni were recorded in 47 nm diameter Ni(0H)2 nanorods.
机译：基于氧化还原活性金属氧化物的电化学电容器在许多储能应用中显示出巨大的希望。这些材料通过双电层充电和法拉第反应在氧化物中存储电荷。氧化物纳米材料的尺寸对这种电容器的性能具有很大的影响。不仅由于表面积效应（影响双层电容），而且还由于整体电导率和离子电导率。由于低成本和高理论容量，Ni（OH）2是此类应用的主要候选材料。我们已经检查了直径与Ni / Ni（OH）_2纳米棒的容量之间的关系。在47 nm直径的Ni（0H）2纳米棒中记录了高达511 F / g Ni的比电容。

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