Abstract
A simple rheological phase method has been successfully put forward to synthesize layer Li[Li0.182Ni0.182Co0.091Mn0.545]O2 under a stepped temperature. The structure and morphology of Li[Li0.182Ni0.182Co0.091Mn0.545]O2 powder were characterized. The sub-micron Li[Li0.182Ni0.182Co0.091Mn0.545]O2 sample possesses an integrated layer hexagonal structure with minimal cation disorder. The Li[Li0.182Ni0.182Co0.091Mn0.545]O2 cathodes were prepared with different binders of sodium carboxymethyl cellulose (CMC), polyvinylidene fluoride (PVDF) and sodium alginate (SA). Electrochemical performances, including cyclability, rate capacity and voltage decay, of the cathodes were investigated. Compared with the PVDF, favorable electrochemical properties are obtained by using SA or CMC as the binder. It indicates that the aqueous binder is more suitable for Li[Li0.182Ni0.182Co0.091Mn0.545]O2 cathode in Li-ion battery.
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