Synthesis and improved electrochemical performance of Al (OH)3-coated Li[Ni1/3Mn1/3Co1/3]O2 cathode materials at elevated temperature
2005; Elsevier BV; Volume: 50; Issue: 20 Linguagem: Inglês
10.1016/j.electacta.2005.01.037
ISSN1873-3859
AutoresSungeun Jang, Suk-Hoon Kang, Khalil Amine, Young Chan Bae, Yang‐Kook Sun,
Tópico(s)Electrical and Thermal Properties of Materials
ResumoSpherical Li[Ni1/3Co1/3Mn1/3]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 Li[Ni1/3Co1/3Mn1/3]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 Li[Ni1/3Co1/3Mn1/3]O2 delivered only 45% at the same current density. Also, unlike pristine Li[Ni1/3Co1/3Mn1/3]O2, the Al(OH)3-coated Li[Ni1/3Co1/3Mn1/3]O2 cathode exhibits excellent rate capability and good thermal stability.
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