Synthesis and improved electrochemical performance of Al (OH)3-coated Li[Ni1/3Mn1/3Co1/3]O2 cathode materials at elevated temperature |
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| Authors: | SB Jang K Amine Y-K Sun |
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| Affiliation: | a Department of Chemical Engineering, Center for Information and Communication Materials, Hanyang University, Seungdoung-Gu, Seoul 133-791, Republic of Korea
b Argonne National Laboratory, Electrochemical Technology Program, Chemical Technology Division, Argonne, IL 60439, USA |
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| Abstract: | Spherical LiNi1/3Co1/3Mn1/3]O2 powders were synthesized from LiOH·H2O and coprecipitated spherical metal hydroxide, (Ni1/3Mn1/3Co1/3)(OH)2 and coated with Al(OH)3. The Al(OH)3-coated LiNi1/3Co1/3Mn1/3]O2 showed a capacity retention of 80% at 320 mA g−1 (2 C-rate) based on 20 mA g−1 (0.1 C-rate), while the pristine LiNi1/3Co1/3Mn1/3]O2 delivered only 45% at the same current density. Also, unlike pristine LiNi1/3Co1/3Mn1/3]O2, the Al(OH)3-coated LiNi1/3Co1/3Mn1/3]O2 cathode exhibits excellent rate capability and good thermal stability. |
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| Keywords: | Hydroxide Layered cathode materials Coating Rate capability DSC |
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