Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6605084 | Electrochimica Acta | 2017 | 29 Pages |
Abstract
A CoP@Ni(OH)2 composite with porous nanosheet networks was directly synthesized on carbon cloth, which avoids the usage of any binders and additives. Benefiting from the CoP nanosheet core that could provide fast electron transport pathway and distinctive nano-architecture, this composite achieved a specific capacitance of 1989 FÂ gâ1 at a current density of 2.0Â AÂ gâ1, good rate capability and cyclic stability. Furthermore, an aqueous asymmetrical CoP@Ni(OH)2//AC supercapacitor (ASC) was also successfully assembled. The ASC device exhibited good electrochemical properties including a 1.8Â V potential window, a high specific capacitance of 220Â FÂ gâ1 at a current density of 1Â AÂ gâ1 and long-term cycling performance. In the meantime, the ASC device also achieved a high energy density of 89.6Â Wh kgâ1 at a power density of 0.91Â kWÂ kgâ1. These results suggest that nano-architectured CoP@Ni(OH)2 composite has great potential for application in energy storage device.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Chemical Engineering (General)
Authors
Jian Wen, Songzhan Li, Tian Chen, Borui Li, Liangbin Xiong, Yaxiong Guo, Guojia Fang,