Abstract
The design of micro/nanostructures with high porosity is very important to achieve reliable and high-performance capacitive materials for electrochemical energy storage. The complexity of this strategy is limited by the lack of a facile method to synthesize multi-hierarchical architectures with both high electroactive surface area and fast ion diffusion ability. Here, we report a designed MnCo2O4/Ni electrode with multilevel hierarchy containing mesoporous MnCo2O4 nanosheet layers and vertically aligned MnCo2O4 nanoflake layers on a macroporous Ni foam support (∼500 μm). The dual-MnCo2O4 layers are well connected with each other and grown directly on the Ni foam support. As a result, the obtained dual-MnCo2O4/Ni electrode delivers an excellent specific capacity up to 283 mAh g−1 and long-term performance stability over 2000 cycles.
Original language | English |
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Pages (from-to) | 55-61 |
Number of pages | 7 |
Journal | Electrochimica Acta |
Volume | 280 |
DOIs | |
Publication status | Published - 1 Aug 2018 |
Keywords
- Energy storage
- Hierarchical
- Mesoporous
- Supercapacitor