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Congratulation to Sen Wang on ACS Nano Publication!
Congratulation to Sen Wang on ACS Nano Publication!
Posted:2017-03-29    Column:2017News
Our graphene-based micro-supercapacitor paper on "Scalable Fabrication of Photochemically Reduced Graphene-Based Monolithic Micro-Supercapacitors with Superior Energy and Power Densities" has been published online in high-impact journal ACS Nano (IF=13.33). Many thanks to our cooperative scientists of Prof.BAO and Prof.C.L. Sun at DICP, and Prof.H.M. Cheng from Institute of Metal Research, CAS. Congratulation to Sen Wang!

    

Micro-supercapacitors (MSCs) hold great promise as highly competitive miniaturized power sources satisfying the increased demand of smart integrated electronics. However, single-step scalable fabrication of MSCs with both high energy and power densities is still challenging. Here we demonstrate the scalable fabrication of graphene-based monolithic MSCs with diverse planar geometries and capable of superior integration by photochemical reduction of graphene oxide/TiO2 nanoparticle hybrid films. The resulting MSCs exhibit high volumetric capacitance of 233.0 F cm-3, exceptional flexibility, and remarkable capacity of modular serial and parallel integration in aqueous gel electrolyte. Furthermore, by precisely engineering the interface of electrode with electrolyte, these monolithic MSCs can operate well in a hydrophobic electrolyte of ionic liquid (3.0 V) at a high scan rate of 200 V s-1, two orders of magnitude higher than those of conventional supercapacitors. More notably, the MSCs show landmark volumetric power density of 534 W cm-3 and energy density of 13.2 mWh cm-3, both of which are among the highest values attained for carbon-based MSCs. Therefore, such monolithic MSC devices based on photochemically reduced, compact graphene films possess enormous potential for numerous miniaturized, flexible electronic applications.

See the article: S. Wang, Z.-S. Wu*, S.H. Zheng, F. Zhou, C.L. Sun, H.-M. Cheng, and X.H. Bao, Scalable Fabrication of Photochemically Reduced Graphene-Based Monolithic Micro-Supercapacitors with Superior Energy and Power Densities. ACS Nano 2017, DOI: 10.1021/acsnano.7b01390.

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