Surface modification of commercial PP separator of lithium ion battery

【摘要】：正The modified polypropylene(PP) separators with self-polymerization of dopamine on the surfaces were prepared via a simple solution-immersion method.The wettability ability of polydopamine-modified separator was increased significantly by the contact angle test.The half-cell with dopamine modified separator shows a higher discharge capacity and better discharge C-rate capability and cyclability.