Journal
MATERIALS TECHNOLOGY
Volume 31, Issue 11, Pages 642-645Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/10667857.2016.1177986
Keywords
Cutoff charge-voltage; Lithium manganate; Lithium titanate; Lithium-ion battery
Categories
Funding
- Natural Science Foundation of Hubei Province of China [2014CFA527]
- Young Talents Development Plan of Hubei Province
- Chenguang Project of Wuhan Science and Technology Bureau [2015070404010212]
- Key Project of Hubei Provincial Department of Education [D20153001]
- National Natural Science Foundation of China [21303045]
- National High Technology Research and Development Program of China [863 Program] [2013AA050902]
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The relationship between cutoff charge-voltage and lithium-ion battery performance is very complex. This paper explores the influence of cutoff charge-voltage on lithium manganite (LMO)/lithium titanate (LTO) power lithium-ion battery for power application performance. Performance criteria evaluated include: low-temperature discharge capacity, pulse power density, and high temperature cycle life. Results illustrate that a lower cutoff charge-voltage (3.0 V) resulted in a battery with high discharge capacity at low temperature while a higher cutoff charge-voltage (3.8 V) in a battery leads to good high temperature cycle stability. A moderate cutoff charge-voltage (3.4 V) brought a battery with both high and low temperature-enhanced performance.
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