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| Content Provider | Royal Society of Chemistry (RSC) |
|---|---|
| Author | Xu, Hao Guo, Wei Huang, Qingli Pang, Huan Xue, Huaiguo Yan, Yan Zheng, Mingbo |
| Copyright Year | 2016 |
| Abstract | Micro-nanostructured mixed metal vanadates have recently garnered enormous attention owing to their remarkable performances in catalysis, energy storage and conversion. In this work, we report the synthesis of amorphous aluminum vanadate hierarchical microspheres via a simple hydrothermal approach with polyvinylpyrrolidone as a surface directing agent. Amorphous aluminum vanadate hierarchical microspheres are firstly described as a kind of electrode material for supercapacitors. The measured specific capacitance of the amorphous aluminum vanadate electrode is 497 F g−1 at 1 A g−1 with good stability and a retention capacity of 89% after 10 000 cycles. In addition, the fabricated asymmetric supercapacitor device delivered better performance with an extended operating voltage window of 1.5 V, excellent cycle stability (10 000 cycles, 85% capacitance retention), high energy density (37.2 W h kg−1 at 1124.4 W kg−1) and high power density (11 250 W kg−1 at 25 W h kg−1). This study essentially offers a new kind of vanadate as an electrochemical active material for the development of supercapacitors. |
| Starting Page | 791 |
| Ending Page | 797 |
| Page Count | 7 |
| File Format | HTM / HTML PDF |
| ISSN | 20521553 |
| Volume Number | 3 |
| Issue Number | 6 |
| Journal | Inorganic Chemistry Frontiers |
| DOI | 10.1039/c6qi00089d |
| Language | English |
| Publisher | Royal Society of Chemistry |
| Access Restriction | Open |
| Subject Keyword | Vanadate Hydrothermal circulation Polyvinylpyrrolidone Electrode Capacitance Energy density Electrochemistry |
| Content Type | Text |
| Resource Type | Article |
| Subject | Inorganic Chemistry |
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