Effect of Y3+on microstructure optimization and performance enhancement of ultra-thin electrodeposited copper foil

IF 4.1 3区化学 Q1 CHEMISTRY, ANALYTICAL

Journal of Electroanalytical Chemistry Pub Date : 2025-09-24 DOI:10.1016/j.jelechem.2025.119487

Xin Zhang, Jiayi Zhang

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引用次数: 0

Abstract

Ultra-thin copper foil is critical for high-density circuits and lithium-ion battery current collectors, yet surface roughness, brittleness, and inhomogeneous grains limit performance. This study demonstrates that rare-earth yttrium ions (Y³⁺) in acidic copper sulfate electrolyte optimize microstructure and enhance properties of electrodeposited copper foil. At 0.6 mg/L Y³⁺, grain refinement (0.4–0.9 μm), intensified (220) plane (T_C = 1.85), and minimized surface defects were achieved via adsorption-mediated growth inhibition. The optimized foil exhibited 63 % lower corrosion current density (0.47 μA/cm²) and 3.5 times higher charge transfer resistance versus Y³⁺-free counterparts. Y³⁺ suppresses dendritic growth while promoting preferential orientation, reconciling high strength, corrosion resistance, and interfacial stability. This work provides a novel rare-earth-based strategy for manufacturing high-performance copper foils in advanced electronics and energy storage.

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Y3+对超薄电沉积铜箔微观结构优化和性能增强的影响

超薄铜箔对于高密度电路和锂离子电池集流器至关重要，但其表面粗糙度、脆性和颗粒不均匀性限制了其性能。研究表明，在酸性硫酸铜电解液中加入稀土钇离子（Y3+）可以优化电沉积铜箔的微观结构，提高电沉积铜箔的性能。当Y3+浓度为0.6 mg/L时，晶粒细化（0.4 ~ 0.9 μm），强化（220）平面（TC = 1.85），表面缺陷最小化。与不含Y3+的箔相比，优化后的箔的腐蚀电流密度（0.47 μA/cm2）降低63%，电荷转移电阻提高3.5倍。Y3+抑制枝晶生长，促进择优取向，兼顾高强度、耐腐蚀和界面稳定性。这项工作为在先进电子和能源存储领域制造高性能铜箔提供了一种新的基于稀土的策略。

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来源期刊

Journal of Electroanalytical Chemistry 化学-电化学

CiteScore

7.80

自引率

6.70%

发文量

912

审稿时长

2.4 months

期刊介绍： The Journal of Electroanalytical Chemistry is the foremost international journal devoted to the interdisciplinary subject of electrochemistry in all its aspects, theoretical as well as applied. Electrochemistry is a wide ranging area that is in a state of continuous evolution. Rather than compiling a long list of topics covered by the Journal, the editors would like to draw particular attention to the key issues of novelty, topicality and quality. Papers should present new and interesting electrochemical science in a way that is accessible to the reader. The presentation and discussion should be at a level that is consistent with the international status of the Journal. Reports describing the application of well-established techniques to problems that are essentially technical will not be accepted. Similarly, papers that report observations but fail to provide adequate interpretation will be rejected by the Editors. Papers dealing with technical electrochemistry should be submitted to other specialist journals unless the authors can show that their work provides substantially new insights into electrochemical processes.