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Original Research ARTICLE Provisionally accepted The full-text will be published soon. Notify me

Front. Chem. | doi: 10.3389/fchem.2018.00431

Urchin-Like Ni2/3Co1/3(CO3)1/2(OH)·0.11H2O for high-performance supercapacitors

Zimin Jiang1*, Tingting Xu1*, Congcong Yan1, Caiyun Ma1 and  Shuge Dai1*
  • 1Zhengzhou University, China

Here, we report our finding in the fabrication of novel porous Ni2/3Co1/3(CO3)1/2(OH)•0.11H2O (denoted as NC) electrode material with urchin-like structure composed of numerous nanoneedles through an one-step hydrothermal method, which delivered a high specific capacity of 318 C g-1 at a current density of 1 A g-1. Moreover, an architectural composite electrode consisting of the porous NC nanoneedles wrapped by reduced graphene oxide (rGO) nanosheets exhibits large specific capacity (431 C g-1 at 1 A g-1), high rate capability and long cycling life (94% capacity retention after 5000 cycles at 20 A g-1). The presence of rGO in the composite electrode greatly improves the electronic conductivity, providing efficient current collection for fast energy storage.

Keywords: porous, NiCo Hydroxides, Graphene, composites, supercapacitors

Received: 30 Jul 2018; Accepted: 31 Aug 2018.

Edited by:

Qiaobao Zhang, Xiamen University, China

Reviewed by:

Linfeng Hu, Fudan University, China
Hongwei Mi, Shenzhen University, China  

Copyright: © 2018 Jiang, Xu, Yan, Ma and Dai. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

* Correspondence:
MD. Zimin Jiang, Zhengzhou University, Zhengzhou, China, wind0428@126.com
Prof. Tingting Xu, Zhengzhou University, Zhengzhou, China, xutt@zzu.edu.cn
Prof. Shuge Dai, Zhengzhou University, Zhengzhou, China, shugedai@zzu.edu.cn