We are reporting a 3D printable composite paste having strong thixotropic rheology. The composite has been designed and investigated with highly conductive silver nanowires. The optimized electrical percolation threshold from both simulation and experiment is shown from 0.7 vol. % of silver nanowires which is significantly lower than other composites using conductive nano-materials. Reliable conductivity of 1.19 × 102 S/cm has been achieved from the demonstrated 3D printable composite with 1.9 vol. % loading of silver nanowires. Utilizing the high conductivity of the printable composites, 3D printing of designed battery electrode pastes is demonstrated. Rheology study shows superior printability of the electrode pastes aided by the celluloseu27s strong thixotropic rheology. The designed anode, electrolyte, and cathode pastes are sequentially printed to form a three-layered lithium battery for the demonstration of a charging profile. This study opens opportunities of 3D printable conductive materials to create printed electronics with the next generation additive manufacturing process.
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机译:我们正在报告一种具有强触变性的3D可打印复合浆料。该复合材料已通过高导电性银纳米线设计和研究。从0.7 vol显示了模拟和实验中优化的电渗流阈值。银纳米线的百分比,明显低于其他使用导电纳米材料的复合材料。通过演示的1.9 vol的3D可打印复合材料,已实现了1.19×102 S / cm的可靠电导率。银纳米线的%负载。利用可印刷复合材料的高电导率,对设计的电池电极浆料进行3D打印演示。流变学研究表明,由于纤维素的强触变性,助焊剂具有优异的可印刷性。依次印刷设计的阳极糊,电解质糊和阴极糊,以形成三层锂电池,用于演示充电曲线。这项研究为3D可印刷导电材料提供了利用下一代增材制造工艺制造印刷电子产品的机会。
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