Supercapacitors based on low-temperature partially exfoliated and reduced graphite oxide Academic Article uri icon

abstract

  • Thermally exfoliated graphite oxide (GO) has been prepared at a low temperature and ambient pressure usually contains flourish oxygen functional groups. We find that complete oxidized graphite can be successfully expanded, as well as partially exfoliated and reduced at a very low temperature about 200 °C and ambient pressure without any supplementary conditions such as high vacuum or under hydrogen environment. The electrochemical properties of supercapacitor electrodes are studied by cyclic voltammetry (CV) and galvanostatic charge/discharge (DC) methods. Supercapacitors are constructed with as-prepared functionalized graphene have good electrochemical performance, with a maximum specific capacitance of 315 F g -1 at the charge/discharge current density of 100 mA g -1 using 1 M KOH electrolyte and a high charge/discharge efficiency of about 97%. © 2012 Elsevier B.V. All rights reserved.

author list (cited authors)

  • Ye, J., Zhang, H., Chen, Y., Cheng, Z., Hu, L. i., & Ran, Q.

citation count

  • 53

complete list of authors

  • Ye, Jian||Zhang, Haiyan||Chen, Yiming||Cheng, Zhengdong||Hu, Li||Ran, Qiyan

publication date

  • August 2012