标题：Freestandingtransparent metallic network based ultrathin, foldable and designablesupercapacitors

作者：Y. H.Liu, J. L. Xu*, X. Gao, Y. L. Sun, J. J. Lv, S. Shen, L. S. Chen* and S. D.Wang*

论文摘要：Fullyintegrated ultrathin, transparent and foldable energy storage devices areessential for the development of smart wearable electronics, yet typicalsupercapacitor electrodes are substrate-supported which limits their thickness,transparency and mechanical properties. Employing freestanding transparentelectrode with no substrate supporting could bring ultrathin, foldable anddesignable supercapacitors closer to reality. Herein, we report a freestanding,ultrathin (< 5 μm), highly conductive (3×10⁴S/cm), highlytransparent (> 84% transmittance) and foldable metallic network electrode,loaded with MnO₂by electrochemical deposition, as thesupercapacitor electrode. The freestanding metallic network electrode isfabricatedviaa simple and low-costlaser direct-writing micro-patterning and subsequently selectiveelectrodeposition process, where the metallic network patterns, networkperiods, metal thickness and also the electrode film patterns can be designablefor different applications. The obtained freestanding MnO₂@Ninetwork electrode delivers an outstanding areal capacitance of 80.7 mF/cm²and long-term performance stability (96.3% after 10000 cycles). Moreover, thesymmetric solid-state supercapacitors employing the freestanding MnO₂@Ninetwork electrode not only show high areal capacitance as well as high opticaltransparency (> 80% transmittance), but also can be tailored, attached,folded, rolled up, and crumpled into any objects or various shapes with onlyslight performance degradation. The advent of such transparent metallic networkelectrode featured as “freestanding, ultrathin and foldable” may open up a newavenue for realizing fully-integrated ultrathin, foldable and designablesupercapacitors towards self-powered wearable electronics.

原文链接：http://pubs.rsc.org/-/content/articlehtml/2017/ee/c7ee02390a

期刊名称：Energy& Environmental Science
年/卷/期/页：EnergyEnviron. Sci., 2017, 10, 2534