Comparative study on ternary spinel cathode Zn–Mn–O microspheres for aqueous rechargeable zinc-ion batteries

Jae Wan Lee, Seung Deok Seo, Dong-Wan Kim

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

We demonstrate the cation ratio-controlled synthesis of ZnMn2O4 and Zn1.67Mn1.33O4 aggregated microspheres. The carbonate precursor was synthesized by a solvothermal reaction, and then completely converted to oxide by calcination at 600 °C with a controlled cationic ratio. The prepared ternary oxide has a nanoparticle-aggregated morphology and uniform size distribution. The electrochemical properties were investigated by cyclic voltammetry and constant current charge-discharge measurements. The Zn1.67Mn1.33O4 electrode reveals better performance for Zn2+ storage than the other, delivering 175 mA h g−1 after 40 cycles. After the electrochemical test, ex situ analysis was conducted to identify the Zn2+ storage mechanisms. From these results, we confirm that the Zn1.67Mn1.33O4 cathode is a promising Zn2+ storage material for environmental friendly aqueous rechargeable Zn-ion batteries.

Original languageEnglish
Pages (from-to)478-482
Number of pages5
JournalJournal of Alloys and Compounds
DOIs
Publication statusPublished - 2019 Sep 5

Fingerprint

Microspheres
Oxides
Zinc
Cathodes
Ions
Carbonates
Electrochemical properties
Calcination
Cyclic voltammetry
Cations
Positive ions
Nanoparticles
Electrodes
spinell

Keywords

  • Aqueous Zn-ion batteries
  • Cathode materials
  • Microspheres
  • Spinel structures
  • Zinc manganese oxides

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

Cite this

Comparative study on ternary spinel cathode Zn–Mn–O microspheres for aqueous rechargeable zinc-ion batteries. / Lee, Jae Wan; Seo, Seung Deok; Kim, Dong-Wan.

In: Journal of Alloys and Compounds, 05.09.2019, p. 478-482.

Research output: Contribution to journalArticle

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