• 文献标题:   Enhancement of the Ni-Co hydroxide response as Energy Storage Material by Electrochemically Reduced Graphene Oxide
  • 文献类型:   Article
  • 作  者:   ADANMAS A, DUARTE RG, SILVA TM, GUERLOUDEMOURGUES L, MONTEMOR MFG
  • 作者关键词:   electrochemically reduced graphene oxide, nickelcobalt hydroxide, energy storage electrode, electrochemical impedance spectroscopy
  • 出版物名称:   ELECTROCHIMICA ACTA
  • ISSN:   0013-4686 EI 1873-3859
  • 通讯作者地址:   Univ Lisbon
  • 被引频次:   18
  • DOI:   10.1016/j.electacta.2017.04.070
  • 出版年:   2017

▎ 摘  要

Nickel-Cobalt double hydroxide materials are combined with Electrochemically Reduced Graphene Oxide (Er-GO) on top of Stainless Steel collectors by means of a one-step pulsed electrodeposition technique. Results show that, when Er-GO is integrated into the Nickel-Cobalt hydroxide matrix, there is an improvement of the electrochemical performance of the material, which shows increased capacity, stability and rate capability. As seen by Scanning Electron Microscopy (SEM), X-Ray Photoelectron Spectroscopy (XPS), Grazing-Incidence X-Ray Diffraction (GIXD) and Raman Spectroscopy, there is an excellent integration between the materials that leads to the enhanced electrochemical response. Capacity values up to 96 mAh/g and a 62% capacity retention after 5000 cycles were achieved. Moreover, scan rates up to 2000 mV/s without loss in electrochemical response were possible proving its good rate capabilities. A detailed study of the cycling degradation phenomena was also done by means of electrochemical impedance spectroscopy (EIS). Thus, this novel electrodeposited material serves as an excellent material for energy storage applications. (C) 2017 Elsevier Ltd. All rights reserved.