Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 695, Issue -, Pages 1685-1690Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2016.10.318
Keywords
Hybrid battery capacitor; Li4Ti5O12; LiMn2O4; Activated carbon
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Funding
- Science and Technology Major Project of Ningbo [201601ZD-A01018]
- National Grass-Rootlevel Industrial Development Strength Project [0714-EMTC02-5593]
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Pouch cells are assembled to evaluate the Li4Ti5O12+AC/LiMn2O4+AC hybrid battery capacitor system. Different composite method is discussed and the Li4Ti5O12+AC/LiMn2O4+AC cell shows better electrochemical performance. In comparison with different composite proportions and CN/CP ratios, the results show that the cell with a CN/CP ratio 1.01, containing 5 wt% AC in each electrode, embraced superior electrochemical performance. Capacity loss is less than 22.5% after 2000 cycles at 5 degrees C, achieving a large improvement of the cycle stability compared to Li4Ti5O12/LiMn2O4 lithium-ion battery. Then large prismatic prototype is designed, the excellent cycle stability makes it a promising device for public utilization of these energy storage applications. (C) 2016 Elsevier B.V. All rights reserved.
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