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A one-step, cost-effective green method to in situ fabricate Ni(OH)2 hexagonal platelets on Ni foam as binder-free supercapacitor electrode materials
| Content Provider | Semantic Scholar |
|---|---|
| Author | Li, Lingjie Xu, Jing Lei, Jinglei Zhang, Jie McLarnon, Frank R. Wei, Zidong Li, Nianbing Pan, Fusheng |
| Copyright Year | 2015 |
| Abstract | Nickel hydroxide (Ni(OH)2) is considered to be a promising alternative to the expensive and toxic RuO2 electrode material for high-performance supercapacitors; however, the fabrication method and electrochemical performance of suitable Ni(OH)2 structures are unsatisfactory. In the present work, a facile, cost-effective green method is developed to in situ fabricate Ni(OH)2 hexagonal platelets on Ni foam as a binder-free supercapacitor electrode with high performance. The Ni(OH)2 hexagonal platelets are self-grown on three-dimensional (3D) Ni foam by a one-step hydrothermal treatment of Ni foam in a 15 wt% H2O2 aqueous solution without the use of nickel salts, acids, bases, or post-treatments. The as-prepared Ni(OH)2 hexagonal platelets-Ni foam (HNF) electrode can be used directly as a supercapacitor electrode material, thereby avoiding the need for binders and conducting agents. The Ni(OH)2 hexagonal platelets demonstrate high capacitance (2534 F g−1 at a scan rate of 1 mV s−1) and excellent cycling stability (97% capacitance retention after 2000 cycles at a scan rate of 50 mV s−1). The fabrication method developed here has the significant advantage of low-cost, facile, green, and additive-free processing, and it is therefore a promising route for preparing self-supported metal (hydr)oxide electrodes for high-performance supercapacitors and other energy-storage devices. |
| Starting Page | 1953 |
| Ending Page | 1960 |
| Page Count | 8 |
| File Format | PDF HTM / HTML |
| DOI | 10.1039/C4TA05156D |
| Alternate Webpage(s) | http://www.rsc.org/suppdata/ta/c4/c4ta05156d/c4ta05156d1.pdf |
| Alternate Webpage(s) | https://doi.org/10.1039/C4TA05156D |
| Volume Number | 3 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
