Citation: LUO Xue-Fei, GUO Lei, WEI Qian-Qian, XU Jiang-Yan, WANG Kuai-Bing, LÜ Bo. Influence of Crystallinity and Binder on the Energy Delivery Efficiency for Porous Magnesium Cobaltate Supercapacitor Electrodes[J]. Chinese Journal of Inorganic Chemistry, ;2018, 34(5): 823-833. doi: 10.11862/CJIC.2018.119 shu

Influence of Crystallinity and Binder on the Energy Delivery Efficiency for Porous Magnesium Cobaltate Supercapacitor Electrodes

LUO Xue-Fei ¹ ,
GUO Lei ¹ ,
WEI Qian-Qian ¹ ,
XU Jiang-Yan ¹ ,
WANG Kuai-Bing ^1,2,, ,
LÜ Bo ^1,,

1.
Department of Chemistry, College of Science, Nanjing Agricultural University, Nanjing 210095, China
2.
State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing 210093, China

Corresponding author: WANG Kuai-Bing, wangkb@njau.edu.cn LÜ Bo, njndlb@njau.edu.cn
Received Date: 18 October 2017
Revised Date: 22 March 2018

Figures(10)

The magnesium/cobalt ternary oxide, porous MgCo₂O₄ nanostructures were synthesized by thermal decomposition of crystalline bimetallic coordination polymer precursors. As a result, various hydrothermal reaction time results in isostructural precursors with different crystallinity. When the pyrolysis temperature and binder are chose to be 500℃ and PTFE respectively, the superior practical capacitance with good energy delivery efficiency (η) is obtained. The corresponding MgCo₂O₄ electrode with high surface area and moderate crystallinity achieves a largest specific capacitance of 348 F·g^-1, maximum η value (92.9%) and 93.7% of capacitance retention after 1 000 continuous charge-discharge cycles.
- coordination polymer particles,
- deliverable efficiency,
- MgCo₂O₄,
- binder,
- capacitance
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