• 文献标题:   Electrochemical Performance Evaluation of Galvanostatically Deposited Co(OH)(2) on Few-Layered Graphene Electrodes
  • 文献类型:   Article
  • 作  者:   PARRAELIZONDA V, BAASLOPEZ JM, PACHECOCATALAN D
  • 作者关键词:   apcvd, fewlayered graphene, galvanostatically deposited co oh 2, electrochemical performance, energy storage
  • 出版物名称:   INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE
  • ISSN:   1452-3981
  • 通讯作者地址:   Ctr Invest Cient Yucatan AC
  • 被引频次:   0
  • DOI:   10.20964/2020.08.54
  • 出版年:   2020

▎ 摘  要

In this paper, an electrochemical performance evaluation of galvanostatically deposited Co(OH)(2) onto few-layered graphene (FLG) is presented. The electrochemical evaluation was carried out in a twoelectrode symmetric cell arrangement. Electrodes were synthesized by combining FLG made through simple instrumentation atmospheric pressure-chemical vapor deposition (AP-CVD) process onto Cu foil substrates, and galvanostatically deposited Co by chronopotentiometry deposition. Faradaic contributions of as-deposited Co(OH)(2) increase the areal capacity of the electrochemical cells (EC) with an areal capacity of 0.72 mu A h cm(-2), in comparison with the FLG EC with an areal capacity of 0.04 mu A h cm(-2) at 4 mA cm(-2). Along with the areal capacity enhancement, specific energy, as the galvanostatic charge/discharge evaluation tells, showed a boost from 0.434 to 7.79 mW h g(-1) evaluated at 4 mA cm(-2), when the EC is galvanostatically deposited with Co. In terms of specific power, both EC presents similar values around 335 mW g(-1). These results offer some insight into the electrochemical complexation of carbonaceous supports obtained from the bottom-up synthesis approach and how they can be tuned to increase the electrochemical storage capabilities of the materials.