Hydrothermal synthesis of layered sodium manganese oxide nanowires and their electrochemical performance

Xian Ming Liu, Zhen Dong Huang, Sei Woon Oh, Peng Cheng Ma, Jun Ma, Bao Hua Li, Jang Kyo Kim

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


A new method for preparing black birnessite nanowires is introduced. Layer-structured manganese oxide nanowires were synthesized by a facile hydrothermal method, and using both NaMnO 4 and CH 3CH 2OH as the precursors in a concentrated NaOH solution. The structure, composition, appearance and electrochemical performance of the product were characterized by means of X-ray diffraction (XRD), transmission electron microscopy (TEM), energy diffraction (ED), high-resolution transmission electron microscopy (HRTEM), thermogravimetric analysis (TGA) and constant current charge/discharge. The XRD patterns showed a single phase corresponding to a crystalline birnessite-based manganese oxide. TEM studies suggested their wire-like structures. The TGA measurement demonstrated that they possessed an excellent thermal stability up to 400 °C. In the potential window of 2.0-4.3 V, the product exhibited excellent cyclic stability and rapid charge- discharge performance.

Original languageBritish English
Pages (from-to)7378-7381
Number of pages4
JournalJournal of Nanoscience and Nanotechnology
Issue number11
StatePublished - Nov 2010


  • Cathode material
  • Cyclability
  • Discharge capacity
  • Li-ion battery
  • Manganese oxides


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