Journal
IONICS
Volume 20, Issue 11, Pages 1517-1523Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s11581-014-1132-1
Keywords
Influence; Lithiumiron phosphate electrode; Power performances; Metal oxide additive
Funding
- MOST [2011CB935902, 2013CB934000, 2014DFG71590, 2010DFA72760, 2011CB711202, 2013AA050903, 2011AA11A257, 2011AA11A254]
- China Postdoctoral Science Foundation [2013M530599, 2013M540929]
- Tsinghua University Initiative Scientific Research Program [2010THZ08116, 2011THZ08139, 2011THZ01004, 2012THZ08129]
- State Key Laboratory of Automotive Safety and Energy [ZZ2012-011]
- Alees (Advanced Lithium Electrochemistry Co., Ltd)
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Metal oxide additives are added into LiFePO4 electrodes attempting to improve cell power performances. Electrochemical performances are tested with 5 wt% different sizes of neutral alumina, nano Al2O3, and nano MgO individually comparing with those with 5 wt% more active LiFePO4 and acetylene black. The polarization between charge and discharge plateaus is reduced not only by adding more conductive acetylene black, but also by adding all these insulated metal oxide additives. Adding natural alumina and nano MgO can significantly increase rate capacities. This might be because of their lithium ion saver effect.
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