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随着新能源行业的迅速发展，对锂离子电池及其动力电池的需求日益加剧，而电解铜箔作为锂离子电池的负极集流体如果抗拉强度不够容易引起电池龟裂而降低电池容量。针对厚度为4μm的超薄锂电铜箔，探究了不同质量浓度羟乙基纤维素(HEC)对4μm极薄电解铜箔的结构及其各项性能的影响。XRD结果表明，随着HEC质量浓度增大，Cu(111)晶面择优系数逐渐降低，Cu(220)晶面择优系数逐渐增大，表现出Cu(220)晶面择优取向生长；各项性能结果表明，当HEC质量浓度为9 mg/L时，可以获得抗拉强度567.89 MPa、伸长率3.63%、粗糙度1.26μm,光泽度121 GU的4μm极薄高抗拉铜箔，为极薄高抗铜箔提供了研究方向。
Abstract：With the rapid development of the new energy industry, the demand for lithium-ion batteries and other power batteries is increasing, and electrolytic copper foil as a negative collector of lithium-ion batteries, if the tensile strength is not enough, it is easy to cause the battery cracking and reduce the battery capacity.The effects of hydroxyethyl cellulose(HEC) with different mass concentrations on the structure and properties of 4 μm ultra-thin lithium copper foil were investigated.XRD results show that with the increase of HEC mass concentration, the optimization coefficient of Cu(111) crystal face drops gradually, and the optimization coefficient of Cu(220) crystal face increases gradually, indicating the optimal orientation growth of Cu(220) crystal face.The performance results show that 4 μm ultra-thin high-tensile copper foil with tensile strength of 567.89 MPa, elongation of 3.63%,roughness of 1.26 μm and glossiness of 121 GU can be obtained when the mass concentration of HEC is 9 mg/L,which provides the research direction for ultra-thin high-tensile copper foil.
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基本信息:
DOI：10.3969/j.issn.1007-7545.2024.06.014
中图分类号:TF811;TM912
引用信息:
[1]王庆福,韩田莉,樊斌锋,等.羟乙基纤维素对4μm高抗拉电解铜箔组织及性能的影响[J].有色金属(冶炼部分),2024(06):104-108.DOI:10.3969/j.issn.1007-7545.2024.06.014.
基金信息:
河南省重点研发专项(231111241000)
2023-12-15
2023
2023
2023-12-22
2023-12-26
1
2024-05-24
2024-05-24