期刊
MATERIALS LETTERS
卷 271, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.matlet.2020.127799
关键词
MgCo2O4 nanosheets; 2D nanomaterials; Microstructure; Crystal structure; Energy storage and conversion
资金
- National Natural Science Foundation of China [21676036]
- Fundamental Research Funds for the Central Universities of Chongqing University [2018CDQYCH0028, 2018CDXYHG0028, 2019CDXYHG0013]
- Graduate Research and Innovation Foundation of Chongqing [CYS 18032]
- Large-scale Equipment Sharing Fund of Chongqing University [201903150149]
Two dimensional (2D) spinel cobaltite has great potential in electrochemical energy storage due to its unique structure and remarkable performance. Herein, we reported for a successful synthesis of MgCo2O4 nanosheets through direct hydrothermal decomposition of a mixed aqueous solution of MgCl2 and CoCl2 and formic acid (HCOOH, FA) at 200 degrees C for 6 h. The MgCo2O4 nanosheets yield a specific capacitance of 1431.2 F.g(-1) at 1.0 A.g(-1) in a three-electrode system and a high energy density of 32 Wh.kg(-1) at a power density of 800 W.kg(-1) in an aqueous asymmetric supercapacitor (MgCo2O4 thin sheets (+)//active carbon (AC) (-)). The MgCo2O4 nanosheets display potential applications in electrochemical energy storage. (C) 2020 Elsevier B.V. All rights reserved.
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