Ultrafast Shaped Laser Induced Synthesis of MXene Quantum Dots/Graphene for Transparent Supercapacitors

Bibliographische Detailangaben
Veröffentlicht in:	Advanced materials (Deerfield Beach, Fla.). - 1998. - 34(2022), 12 vom: 24. März, Seite e2110013
1. Verfasser:	Yuan, Yongjiu (VerfasserIn)
Weitere Verfasser:	Jiang, Lan, Li, Xin, Zuo, Pei, Zhang, Xueqiang, Lian, Yiling, Ma, Yunlong, Liang, Misheng, Zhao, Yang, Qu, Liangti
Format:	Online-Aufsatz
Sprache:	English
Veröffentlicht:	2022
Zugriff auf das übergeordnete Werk:	Advanced materials (Deerfield Beach, Fla.)
Schlagworte:	Journal Article MXenes energy storage graphene quantum dots shaped femtosecond laser

Beschreibung
Zusammenfassung:	© 2022 Wiley-VCH GmbH. Ultratransparent electrodes have attracted considerable attention in optoelectronics and energy technology. However, balancing energy storage capability and transparency remains challenging. Herein, an in situ strategy employing a temporally and spatially shaped femtosecond laser is reported for photochemically synthesizing of MXene quantum dots (MQDs) uniformly attached to laser reduced graphene oxide (LRGO) with exceptional electrochemical capacitance and ultrahigh transparency. The mechanism and plasma dynamics of the synthesis process are analyzed and observed at the same time. The unique MQDs loaded on LRGO greatly improve the specific surface area of the electrode due to the nanoscale size and additional edge states. The MQD/LRGO supercapacitor has high flexibility and durability, ultrahigh energy density (2.04 × 10-3 mWh cm-2 ), long cycle life (97.6% after 12 000 cycles), and excellent capacitance (10.42 mF cm-2 ) with both high transparency (transmittance over 90%) and high performance. Furthermore, this method provides a means of preparing nanostructured composite electrode materials and exploiting quantum capacitance effects for energy storage
Beschreibung:	Date Revised 24.03.2022 published: Print-Electronic Citation Status PubMed-not-MEDLINE
ISSN:	1521-4095
DOI:	10.1002/adma.202110013