Abstract A layered structure has a better effect on improving performance of the graphene-reinforced composites due to its unique two-dimensional structure and excellent properties. In this paper, a novel “one-step” electrochemical route was proposed for synthesizing the graphene-reinforced ultrathin copper (Cu) foil with high performance. The process includes: 1) A loose graphene oxide (GO) membrane, was prepared by electrophoresis deposition (EPD), that allows Cu ions passing through; 2) According to the difference of Cu deposition potential on different substrates, a potential step was designed for electrodepositing Cu successively on both sides of the GO membrane, i.e., the bottom Cu layer forms under low over-potential, while the top Cu layer forms under high over-potential. The experimental results show that the foil thickness reaches to as thin as 4–5 μm, and the tensile strength is almost twice as large as that of pure Cu foil. The process is simple, controllable and possible mass production, and expected to further practical applications in fields of Cu clad plate, printed circuit board and lithium-ion battery cathode collector system for saving raw material and also the space. In addition, this work proposes a new idea for preparing the layered composites via electrochemical route.

中文翻译：

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通过电化学途径一步合成具有增强性能的夹心型Cu/石墨烯/Cu超薄箔

摘要 层状结构由于其独特的二维结构和优异的性能，对提高石墨烯增强复合材料的性能有更好的效果。在本文中，提出了一种新的“一步”电化学路线来合成高性能的石墨烯增强超薄铜（Cu）箔。该过程包括： 1）通过电泳沉积（EPD）制备松散的氧化石墨烯（GO）膜，允许铜离子通过；2）根据不同基板上Cu沉积电位的差异，设计了电位阶跃，在GO膜的两侧依次电沉积Cu，即底部Cu层在低过电位下形成，而顶部Cu层形成在高过电位下。实验结果表明，箔厚度达到4-5μm，抗拉强度几乎是纯铜箔的两倍。该工艺简单、可控、可量产，有望在Cu复合板、印刷电路板、锂离子电池正极集电系统等领域进一步实际应用，节省原材料，节省空间。此外，这项工作提出了一种通过电化学途径制备层状复合材料的新思路。印刷电路板和锂离子电池阴极集电系统，节省原材料和空间。此外，这项工作提出了一种通过电化学途径制备层状复合材料的新思路。印刷电路板和锂离子电池阴极集电系统，节省原材料和空间。此外，这项工作提出了一种通过电化学途径制备层状复合材料的新思路。