The development of low cost LiFePO4-based high power lithium-ion batteries

Conference · Tue Nov 25 00:00:00 EST 2003

OSTI ID:842964

Shim, Joongpyo; Sierra, Azucena; Striebel, Kathryn A

The cycling performance of low-cost LiFePO4-based high-power lithium-ion cells was investigated and the components were analyzed after cycling to determine capacity fade mechanisms. Pouch type LiFePO4/natural graphite cells were assembled and evaluated by constant C/2 cycling, pulse-power and impedance measurements. From post-test electrochemical analysis after cycling, active materials, LiFePO4 and natural graphite, showed no degradation structurally or electrochemically. The main reasons for the capacity fade of cell were lithium inventory loss by side reaction and possible lithium deposition on the anode.

• Research Organization: Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
• Sponsoring Organization: USDOE. Assistant Secretary for Energy Efficiency and Renewable Energy. Office of the FreedomCAR and Vehicle Technologies Program
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 842964
• Report Number(s): LBNL-54098; R&D Project: 674501; TRN: US200516%%1249
• Resource Relation: Conference: Electrohcemical Society, Power Sources for Transportation Applications,, Orlando, FL, October 12-16, 2003
• Country of Publication: United States
• Language: English

Related Subjects

25 ENERGY STORAGE
CAPACITY
DEPOSITION
GRAPHITE
IMPEDANCE
LITHIUM
PERFORMANCE
LiFePO4 natural graphite lithium-ion battery diagnostics