| 引用本文: | 惠越,杨光,胡正晨,田振岐,邓丁榕,张玉周.电解液组成及工艺参数对铜箔性能的影响[J].材料科学与工艺,2023,31(5):66-75.DOI:10.11951/j.issn.1005-0299.20220236. |
| HUI Yue,YANG Guang,HU Zhengchen,TIAN Zhenqi,DENG Dingrong,ZHANG Yuzhou.Influence of electrolyte composition and process parameters on Cu foil performance[J].Materials Science and Technology,2023,31(5):66-75.DOI:10.11951/j.issn.1005-0299.20220236. |
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| 摘要: |
| 超薄铜箔是锂离子电池的重要基础材料,为了实现超薄铜箔从基底上顺利剥离,电沉积Cr纳米离散晶核作为剥离层,成功实现了厚度为1.34 μm超薄铜箔的制备。Cr纳米离散晶核密度、Cl-质量浓度、电流密度、CuSO4质量浓度以及温度等工艺参数对超薄铜箔的性能(粗糙度、电阻率和拉伸强度等)有重要影响,通过建立L16(45)正交试验分析,得出对粗糙度、电阻率和拉伸强度影响程度最大的因素分别是:Cr纳米离散晶核密度、Cr纳米离散晶核密度和电流密度。采用矩阵分析法得出最优的正交试验方案为:CuSO4质量浓度为100 g/L,电流密度为5 A/dm2,温度为25 ℃,Cr纳米离散晶核密度为15.7×109/cm2,Cl-质量浓度为60 mg/L；各个因素对正交试验的指标(粗糙度、电阻率和拉伸强度等)影响的主次顺序依次为:Cr纳米离散晶核密度＞电流密度＞Cl-质量浓度＞温度＞CuSO4质量浓度。 |
| 关键词: 超薄铜箔 工艺参数 粗糙度 电阻率 拉伸强度 |
| DOI：10.11951/j.issn.1005-0299.20220236 |
| 分类号:TG113 |
| 文献标识码:A |
| 基金项目:国家自然科学基金资助项目(52175407). |
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| Influence of electrolyte composition and process parameters on Cu foil performance |
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HUI Yue, YANG Guang, HU Zhengchen, TIAN Zhenqi, DENG Dingrong, ZHANG Yuzhou
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(College of Marine Equipment and Mechanical Engineering, Jimei University, Xiamen 361021, China)
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| Abstract: |
| Ultra-thin Cu foil is a key basic material of lithium ion battery. For the smooth stripping of ultra-thin Cu foil from the substrate, electrodeposited Cr nanocrystalline discrete crystal nuclei were used as stripping layers, and ultra-thin Cu foil with thickness of 1.34 μm was successfully prepared. Process parameters such as Cr nanocrystalline discrete crystal nucleus density, Cl- mass concentration, current density, CuSO4 mass concentration, and temperature have significant impact on the performance (e.g., roughness, resistivity, and tensile strength) of ultra-thin Cu foil. By establishing L16(45) orthogonal experiment, it was found that the most influential factors for roughness, resistivity, and tensile strength were Cr nanocrystalline discrete crystal nucleus density, Cr nanocrystalline discrete crystal nucleus density, and current density, respectively. The matrix analysis was performed to obtain the optimal experimental scheme: CuSO4 mass concentration 100 g/L, current density 5 A/dm2, temperature 25 ℃, Cr nanocrystalline discrete crystal nucleus density 15.7×109/cm2, and Cl- mass concentration 60 mg/L. The influence of each factor on the indexes (roughness, resistivity, and tensile strength) of the orthogonal experiment was in the following order:Cr nanocrystalline discrete crystal nucleus density>current density>Cl- mass concentration>temperature>CuSO4 mass concentration. |
| Key words: ultra-thin Cu foil process parameters roughness resistivity tensile strength |
