Original Research ARTICLE
Urchin-Like Ni2/3Co1/3(CO3)1/2(OH)·0.11H2O for high-performance supercapacitors
- 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
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.
MD. Zimin Jiang, Zhengzhou University, Zhengzhou, China, email@example.com
Prof. Tingting Xu, Zhengzhou University, Zhengzhou, China, firstname.lastname@example.org
Prof. Shuge Dai, Zhengzhou University, Zhengzhou, China, email@example.com