期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 800, 期 -, 页码 478-482出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2019.06.051
关键词
Zinc manganese oxides; Spinel structures; Aqueous Zn-ion batteries; Cathode materials; Microspheres
资金
- National Research Foundation of Korea - Ministry of Science and ICT, South Korea [2019R1A2B5B02070203]
- National Research Foundation of Korea [2019R1A2B5B02070203] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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 degrees 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. (C) 2019 Elsevier B.V. All rights reserved.
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