4.8 Article

Thermal stability and phase transformation of electrochemically charged/discharged LiMnPO4 cathode for Li-ion batteries

Journal

ENERGY & ENVIRONMENTAL SCIENCE
Volume 4, Issue 11, Pages 4560-4566

Publisher

ROYAL SOC CHEMISTRY
DOI: 10.1039/c1ee01501j

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Funding

  1. U.S. Department of Energy (DOE)
  2. Office of Vehicle Technologies (through the Batteries for Advanced Transportation Technologies program at Lawrence Berkeley National Laboratory)
  3. Office of Electricity Delivery and Energy Reliability (OE)
  4. DOE's Office of Biological and Environmental Research
  5. Battelle Memorial Institute for DOE [DE-AC05-76RL01830]

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Electrochemically active LiMnPO4 nanoplates at lithiated/delithiated state were subjected to thermal stability and phase transformation evaluations for safety as a cathode material for Li-ion batteries. The phase transformation and oxygen evolution temperature of delithiated MnPO4 were characterized using in situ hot-stage X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), thermogravimetric-differential scanning calorimetry-mass spectroscopy (TGA-DSC-MS), transmission electron microscopy and scanning electron microscopy (SEM)-energy dispersive X-ray analysis (EDAX).

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