Abstract
Single-crystal α-MnO 2 nanotubes have been successfully synthesized by microwave-assisted hydrothermal of potassium permanganate in the presence of hydrochloric acid. The growth mechanism including the morphological and crystalline evolution has been carefully studied with time-dependent X-ray diffraction, electron microscopy, and controlled synthesis. The as-synthesized MnO 2 nanostructures are incorporated in air cathodes of lithium-air batteries as electrocatalysts for the oxygen reduction and evolution reactions. The characterization reveals that the electrodes made of single-crystalline α-MnO 2 nanotubes exhibit much better stability than those made of α-MnO 2 nanowires and δ-MnO 2 nanosheet-based microflowers in both charge and discharge processes. © 2012 American Chemical Society.
| Original language | English |
|---|---|
| Pages (from-to) | 8067-8077 |
| Journal | ACS Nano |
| Volume | 6 |
| Issue number | 9 |
| DOIs | |
| Publication status | Published - 25 Sept 2012 |
| Externally published | Yes |
Bibliographical note
Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].Research Keywords
- electrochemical catalyst
- lithium-air batteries
- microwave synthesis
- morphological control
- nanostructured manganese oxide
