Probing the failure mechanism of nanoscale LiFePO{sub 4} for Li-ion batteries
- Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, Washington 99352 (United States)
- Energy and Environmental Directorate, Pacific Northwest National Laboratory, 902 Battelle Boulevard, Richland, Washington 99352 (United States)
LiFePO{sub 4} is a high power rate cathode material for lithium ion battery and shows remarkable capacity retention, featuring a 91% capacity retention after 3300 cycles. In this work, we use high-resolution transmission electron microscopy and electron energy loss spectroscopy to study the gradual capacity fading mechanism of LiFePO{sub 4} materials. We found that upon prolonged electrochemical cycling of the battery, the LiFePO{sub 4} cathode shows surface amorphization and loss of oxygen species, which directly contribute to the gradual capacity fading of the battery. The finding can guide the design and improvement of LiFePO{sub 4} cathode for high-energy and high-power rechargeable battery for electric transportation.
- OSTI ID:
- 22402481
- Journal Information:
- Applied Physics Letters, Vol. 106, Issue 20; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
- Country of Publication:
- United States
- Language:
- English
Direct regeneration of cathode materials from spent lithium iron phosphate batteries using a solid phase sintering method
|
journal | January 2017 |
First-Principles Study of the Impact of Grain Boundary Formation in the Cathode Material LiFePO4
|
journal | September 2019 |
Similar Records
High-Performance Low-Cobalt Cathode Materials for Li-ion Batteries
Construction of ultrathin N-doped carbon shell on LiFePO{sub 4} spheres as enhanced cathode for lithium ion batteries