Synthesis and characterization of 2 × 4 tunnel structured manganese dioxides as Cathodes in Rechargeable Li, Na, and Mg batteries

Altug S. Poyraz, Calvin D. Quilty, Lisa M. Housel, Xiaobing Hu, Andrea M. Bruck, Yue Ru Li, Jiefu Yin, Bingjie Zhang, Jianping Huang, Lijun Wu, Yimei Zhu, Esther S. Takeuchi, Amy C. Marschilok, Kenneth J. Takeuchi

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

Sodium containing 2 × 4 (0.46nm × 0.92nm) tunnel structured manganese dioxide (Na-2 × 4-MnO2) nanofibers are hydrothermally synthesized. The nanofibrous Na-2 × 4-MnO2 was thoroughly characterized using X-ray diffraction (XRD), thermogravimetric analysis (TGA), inductively coupled plasma optical emission spectroscopy (ICP-OES), N2 sorption, and electron microscopy (SEM and TEM) and is assigned a formula of Na0.25MnO2.0.16H2O. The electrochemistry of Na-2 × 4-MnO2 in non-aqueous Li, Na and Mg batteries is compared for the first time and first cycle delivered capacities were found to be 152mAh/g, 86mAh/g, and 307mAh/g, respectively. Characterization of the active material after electrochemical tests demonstrated that Na-2 × 4-MnO2 preserved both its crystallographic structure and nanofibrous morphology after cycling in Na and Li cells, however, Na-2 × 4-MnO2 lost its crystalline structure after cycling in a Mg based system.

Original languageEnglish (US)
Pages (from-to)A670-A678
JournalJournal of the Electrochemical Society
Volume166
Issue number4
DOIs
StatePublished - 2019

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Renewable Energy, Sustainability and the Environment
  • Surfaces, Coatings and Films
  • Electrochemistry
  • Materials Chemistry

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