Novel Metal@CARBON Spheres Core-Shell Arrays by Controlled Self-Assembly of Carbon Nanospheres : A Stable and Flexible Supercapacitor Electrode

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review

103 Scopus Citations
View graph of relations

Author(s)

  • Xinhui Xia
  • Yongqi Zhang
  • Zhanxi Fan
  • Dongliang Chao
  • Qinqin Xiong
  • Jiangping Tu
  • Hong Jin Fan

Detail(s)

Original languageEnglish
Article number1401709
Journal / PublicationAdvanced Energy Materials
Volume5
Issue number6
Early online date25 Nov 2014
Publication statusPublished - 18 Mar 2015
Externally publishedYes

Abstract

The high performance of electrochemical energy-storage devices relies largely on scrupulous design of nanoarchitectures and smart hybridization of bespoke active materials. Carbon nanopsheres (CNSs) are widely used for energy storage and conversion devices. Here, the directional assembly of CNSs on a vertical-standing metal scaffold into a core/shell array structure is reported. The method uses a three-step all-solution synthesis strategy (chemical bath deposition, electrodeposition, and hydrothermal) and begins from ZnO microrod arrays as a sacrificial template. The self-assembly of CNSs can be correlated to a simultaneous etching effect to the ZnO accompanying the polymerization of glucose precursor. The Ni microtube/CNSs arrays are selected as an example for structural and electrochemical characterizations. The novel type of metal/CNSs arrays is demonstrated to be a highly stable electrode for supercapacitors. The electrodes of metal/CNSs arrays are assembled into symmetric supercapacitors and exhibit high capacitances of 227 F g-1 (at 2.5 A g-1) and an outstanding cycling stability with capacitance retention of 97% after 40 000 cycles.

Research Area(s)

  • carbon spheres, core/shell structures, electrochemical energy storage, nanowires, porous materials

Citation Format(s)

Novel Metal@CARBON Spheres Core-Shell Arrays by Controlled Self-Assembly of Carbon Nanospheres : A Stable and Flexible Supercapacitor Electrode. / Xia, Xinhui; Zhang, Yongqi; Fan, Zhanxi; Chao, Dongliang; Xiong, Qinqin; Tu, Jiangping; Zhang, Hua; Fan, Hong Jin.

In: Advanced Energy Materials, Vol. 5, No. 6, 1401709, 18.03.2015.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review