Journal
CERAMICS INTERNATIONAL
Volume 45, Issue 5, Pages 5266-5275Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2018.11.224
Keywords
Supercapacitor; Doping; Morphology; MnCO3; Ni0.2Mn0.8CO3; Modified
Categories
Funding
- National Natural Science Foundation of China [51672220]
- National Defense Science Foundation [32102060303]
- Xi'an Science and Technology Foundation [2017086CGRC049-XBGY005, 2017040CG-CG024]
- Shaanxi Provincial Key RD Program [2017KW-018]
- NPU Gaofeng Project of China [17GH020824]
Ask authors/readers for more resources
Doping homogeneous elements and conducting morphological adjustment as commonly-used modification methods are both effective to promote the electrochemical properties of electrode materials. In this work, nickeldoped manganese carbonate with 3D flower-like structure was synthesized by a one-step hydrothermal method, and the corresponding growth mechanism was investigated. The electrochemical characteristics of as-fabricated electrode materials were measured, among which 3D self-assembled Ni0.2Mn0.8CO3 nanoflower with large surface area exhibited superior areal capacitance of 583.5 F g(-1) at 1 A g(-1) (fourfold more than MnCO3 microcubes), excellent electrical conductivity as well as satisfactory cycling stability (84.78% capacitance retention after 2000 cycles at 2 A g 1 In addition, the asymmetric supercapacitor assembled with Ni0.2Mn0.8CO3 as cathode and commercial activated carbon as anode displayed a high energy density of 24.1 Wh kg(-1) at the power density of 0.74 kW kg(-1) and showed a desirable cycle life. In summary, the unique 3D flower-like Ni0.2Mn0.8CO3 nanomaterial could be regarded as a promising electrode material for high-performance supercapacitors.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available