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Improvement of High Voltage Cycling Performances of Li[Ni1/3Co1/3Mn1/3]O-2 at 55 degrees C by a (NH4)(3)AlF6 Coating
- Issue Date
- May-2009
- Publisher
- Electrochemical Society, Inc.
- Keywords
- coatings; electrochemical electrodes; electrochemical impedance spectroscopy; electrolytes; lithium compounds; nitrogen compounds; secondary cells; thermal stability; transmission electron microscopy
- Citation
- Electrochemical and Solid-State Letters, v.12, no.8, pp A163 - A166
- Indexed
- SCIE
SCOPUS
- Journal Title
- Electrochemical and Solid-State Letters
- Volume
- 12
- Number
- 8
- Start Page
- A163
- End Page
- A166
- ISSN
- 1099-0062
1944-8775
- Abstract
- The surface of Li[Ni1/3Co1/3Mn1/3]O-2 particles was modified by a simple dry coating with (NH4)(3)AlF6 as a coating agent. The (NH4)(3)AlF6-coated Li[Ni1/3Co1/3Mn1/3]O-2 showed enhanced lithium-ion intercalation stability and thermal stability at 55 degrees C and a high cutoff voltage of 4.5 V. Electrochemical impedance spectroscopy and transmission electron microscopy showed that the (NH4)(3)AlF6 coating on the Li[Ni1/3Co1/3Mn1/3]O-2 particles played a key role in stabilizing the interface between the cathode and the electrolyte.
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Related Researcher
- Yoon, Chong Seung
- COLLEGE OF ENGINEERING (SCHOOL OF MATERIALS SCIENCE AND ENGINEERING)