Studies on the additives for 6 μm medium resistance and high elongation lithium copper foil
In order to prepare double-sided electrolytic copper foil for lithium battery with tensile and extensibility properties and smooth coating at the same time,the research and development of additive formula and additive combination were carried out in this paper.Production experiments were conducted using on-site processes to study and characterize the morphology and structure of copper foils prepared under different formula conditions,and physical properties such as roughness,glossiness,and tensile strength of copper foils were tested and analyzed.The results showed that when the additive combination was selected as collagen protein-bis-(sodium sulfopropyl)-disulfide(SPS),polyethylene glycol(PEG),hydroxyethyl cellulose(HEC),and the additive concentration was collagen 1.5 mg/L,SPS 1 mg/L,PEG 1 mg/L and HEC 2 mg/L,the physical properties of the prepared copper foil are the best,with tensile strength≥340 MPa and elongation≥9.0%.
medium resistance and high elongationlithium copper foiladditive
万方数据
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