Steamed water engineering mechanically robust graphene films for high-performance electrochemical capacitive energy storage

Steamed water engineering mechanically robust graphene films for high-performance electrochemical capacitive energy storagezll_nanoenergy

This work demonstrated a simple yet versatile method to regulate the structures of scalable free-standing reduced graphene oxide films for high-performance flexible supercapacitors. Steamed water with a high pressure and a moderately high temperature in closed vessels was used to prepare reduced graphene oxide (rGO) with regulated structures, and the resultant rGO films exhibited favorable mechanical robustness as well as excellently controllable areal and volumetric capacitances (with a highest gravimetric specific capacitance, a highest areal specific capacitance, and a highest volumetric capacitance up to 340 F/g, 915 mF/cm2, and 326 F/cm3, respectively), revealing the versatile behavior of this fabrication method for high-performance flexible energy storage.
In addition, a typical assembled all-solid-state supercapacitor based on as-tailored graphene films shows large gravimetric and areal specific capacitances, high energy density and power density, as well as excellent capacitance stability, highlighting its great potential for high-performance flexible energy storage devices.

Liling Zhang, Chao Yang, Nantao Hu*, Zhi Yang, Hao Wei, Changxin Chen, Liangming Wei, Zhichuan J. Xu*, Yafei Zhang*. Steamed water engineering mechanically robust graphene films for high-performance electrochemical capacitive energy storage, Nano energy, 2016, 26: 668-676. (IF=11.553), http://www.sciencedirect.com/science/article/pii/S2211285516301951

Tags: 

Leave a Reply

Your email address will not be published. Required fields are marked *

*
*


*