Digitally Patterned Mesoporous Carbon Nanostructures of Colorless Polyimide for Transparent and Flexible Micro-Supercapacitor

Autor:	Hyeonwoo Kim, Suwon Hwang, Taeseung Hwang, Jung Bin In, Junyeob Yeo
Jazyk:	angličtina
Rok vydání:	2021
Předmět:	laser direct laser writing carbonization colorless polyimide electric double-layer capacitor flexible and transparent micro-supercapacitor Technology
Zdroj:	Energies, Vol 14, Iss 9, p 2547 (2021)
Druh dokumentu:	article
ISSN:	1996-1073
DOI:	10.3390/en14092547
Popis:	Here, we demonstrate the fabrication of a flexible and transparent micro-supercapacitor (MSC), using colorless polyimide (CPI) via a direct laser writing carbonization (DLWC) process. The focused laser beam directly carbonizes the CPI substrate and generates a porous carbon structure on the surface of the CPI substrate. Fluorine, which is one of the chemical compositions of CPI, can enhance the specific area and the conductivity of the carbon electrode by creating micropores in carbon structures during carbonization. Thus, the fabricated carbonized CPI-based MSC shows enhanced specific capacitance (1.20 mF at 10 mV s−1) and better transmittance (44.9%) compared to the conventional PI-based MSC. Additionally, the fabricated carbonized CPI-based MSC shows excellent cyclic performance with minimal reduction (
Databáze:	Directory of Open Access Journals
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