Dispersion of Li[Ni0.2Li0.2Mn0.6]O2 Powder by Surfactant for High-power Li-ion Cell
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DOI: 10.5012/BKCS.2009.30.7.1598
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摘要: The particle size of Li[Ni 0.2 Li Mn 0 ]O 2 cathode powder was controlled effectively by dispersion using lauric acid as a surfactant. samples treated showed smaller particles approximately half the original compared to pristine sample. A structural change due 0.6 not detected. rate performance improved acid, which likely decrease size. In particular, sample dispersed (L2) presented greatly enhanced discharge capacity and retention at high C rate. only 133 mAhg -1 (3C rate) 96 (12C tenth cycle. contrast, L2 electrode delivered higher capacities 160 129 12C/2C also from ~ 45% (pristine sample) 57% treatment with acid.
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