Abstract

As a new quasi-zero-dimensional nanomaterial, graphene quantum dots (GQDs) can solve the impact of carbon materials that have low specific surface area and few active sites, improving the performance of planar on-chip micro-supercapacitors (POMSs) by reducing the interdigital width. In this article, nitrogen and oxygen co-doped GQDs (N-O-GQDs) as an electrode material and narrow electrode width and gap are both 6 μm make the POMS possess a power density of 28.1 μW cm⁻² and an energy density of 15.11 nWh cm⁻². Importantly, the capacitance retention rate is as high as 96.1% after 10,000 cycles of charging and discharging.

摘要

作为一种新的准零维纳米材料，石墨烯量子点（GQDs）可以解决比表面积低、活性位点少的碳材料的影响，通过减少平面片上微型超级电容器（POMSs）的性能来提高性能。叉指宽度。在本文中，氮氧共掺杂 GQDs (NO-GQDs) 作为电极材料，窄电极宽度和间隙均为 6 μm，使得 POMS 具有 28.1 μW cm ^-2的功率密度和 15.11 nWh 的能量密度厘米^-2。重要的是，经过10,000次充放电循环后，电容保持率高达96.1%。