Micro-nanoscale all-solid-state planar on-chip micro-supercapacitors based on nitrogen and oxygen Co-doped graphene quantum dots with excellent areal power and energy characteristics
- 10 September 2021
- journal article
- research article
- Published by Taylor & Francis Ltd in Ferroelectrics
- Vol. 581 (1), 200-208
- https://doi.org/10.1080/00150193.2021.1905743
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.Keywords
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