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首页> 外文期刊>ACS applied materials & interfaces >Scalable High-Performance Ultraminiature Graphene Micro-Supercapacitors by a Hybrid Technique Combining Direct Writing and Controllable Microdroplet Transfer
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Scalable High-Performance Ultraminiature Graphene Micro-Supercapacitors by a Hybrid Technique Combining Direct Writing and Controllable Microdroplet Transfer

机译：通过混合技术可缩放的高性能超显式石墨烯微型超级电容器，结合直接写入和可控微滴电路

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摘要

Miniaturization of energy storage devices can significantly decrease the overall size of electronic systems. However, this miniaturization is limited by the reduction of electrode dimensions and the reproducible transfer of small electrolyte drops. This paper reports first a simple scalable direct writing method for the production of ultraminiature micro sup ercap a cit or (MS C) electrodes, based on femtosecond laser reduced graphene oxide (fsrGO) interlaced pads. These pads, separated by 2 pm spacing, are 100 pm long and 8 pm wide. A second stage involves the accurate transfer of an electrolyte microdroplet on top of each individual electrode, which can avoid any interference of the electrolyte with other electronic components. Abundant in-plane mesopores in fsrGO induced by a fs laser together with ultrashort interelectrode spacing enables MSCs to exhibit a high specific capacitance (6.3 mF cm(-2) and 105 F cm(-8)) and-400% retention after 1000 cycles. An all graphene resistor-capacitor (RC) filter is also constructed by combining the MSC and a fsrGO resistor, which is confirmed to exhibit highly enhanced performance characteristics. This new hybrid technique combining fs laser direct writing and precise microdroplet transfer easily enables scalable production of ultraminiature MSCs, which is believed to be significant for practical application of micro-supercapadtor microelectronic systems.
机译：能量存储装置的小型化可以显着降低电子系统的整体尺寸。然而，这种小型化受电极尺寸的降低和小型电解质滴的可重复转移限制。本文首先报道了一种简单的可扩展直接写入方法，用于生产超敏微型SUP ERCAP A CIT或（MS C）电极，基于飞秒激光还原的石墨烯氧化物（FSRGO）隔行垫。由2 PM间距分开的这些垫，宽度为100％，宽8点。第二阶段涉及精确地在每个单独电极的顶部上传递电解质微滴，这可以避免电解质与其他电子元件的任何干扰。由FS激光诱导的FSRGO中的丰富的平面内孔与超短电极间距，使MSC能够表现出高比电容（6.3mF cm（-2）和105f cm（-8））和1000次循环后的400％的保留。通过组合MSC和FSRGO电阻器，还构造了所有石墨烯电阻 - 电容器（RC）滤波器，该电阻被确认表现出高度增强的性能特征。这种新的混合技​​术结合了FS激光直接写入和精确的微电压转移，可轻松实现高超的超级电解MSC的可扩展生产，这对于微型超级电动系统的实际应用是显着的。

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