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首页> 外文期刊>Advanced energy materials >Stretchable Lithium-Ion Batteries Enabled by Device-Scaled Wavy Structure and Elastic-Sticky Separator
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Stretchable Lithium-Ion Batteries Enabled by Device-Scaled Wavy Structure and Elastic-Sticky Separator

机译：器件规模的波浪形结构和弹性粘滞隔板可实现可拉伸锂离子电池

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摘要

Fast developments and substantial achievements have been shaping the field of wearable electronic devices, resulting in the persistent requirement for stretchable lithium-ion batteries (LIBs). Despite recent progress in stretchable electrodes, stretching full batteries, including electrodes, separator, and sealing material, remains a great challenge. Here, a simple design concept for stretchable LIBs via a wavy structure at the full battery device scale is reported. All components including the package are capable of being reversibly stretched by folding the entire pouch cell into a wavy shape with polydimethylsiloxane filled in each valley region. In addition, the stretchable, sticky, and porous polyurethane/poly(vinylidene fluoride) membrane is adopted as a separator for the first time, which can maintain intimate contact between electrodes and separator to continuously secure ion pathway under dynamic state. Commercial cathode, anode, and package can be utilized in this rationally designed wavy battery to enable stretchability. The results indicate good electrochemical performances and long-term stability at repeatable release-stretch cycles. A high areal capacity of 3.6 mA h cm(-2) and energy density of up to 172 W h L-1 can be achieved for the wavy battery. The promising results of the cost-effective wavy battery with high stretchability shed light on the development of stretchable energy storages.
机译：快速发展和实质性成就已经塑造了可穿戴电子设备的领域，从而导致了对可伸缩锂离子电池（LIB）的持续需求。尽管最近在可拉伸电极方面取得了进展，但是拉伸包括电极，隔板和密封材料的完整电池仍然是巨大的挑战。在此，报告了在整个电池设备规模上通过波浪形结构可伸缩LIB的简单设计概念。包括包装在内的所有组件均可通过将整个袋形电池折叠成波浪形而可逆地拉伸，在每个凹谷区域填充聚二甲基硅氧烷。此外，首次采用可拉伸，粘性和多孔性的聚氨酯/聚偏二氟乙烯膜作为隔膜，可以保持电极与隔膜之间的紧密接触，从而在动态状态下连续固定离子通道。可以在这种合理设计的波浪形电池中使用商用阴极，阳极和包装，以实现可拉伸性。结果表明在可重复的释放-拉伸循环中良好的电化学性能和长期稳定性。对于波浪形电池，可以实现3.6 mA h cm（-2）的高面容量和高达172 W h L-1的能量密度。具有成本效益的具有高拉伸性的波浪形电池的可喜成果，为可拉伸储能器的发展提供了启示。

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  • 来源
    《Advanced energy materials》 |2017年第21期|1701076.1-1701076.8|共8页
  • 作者

    Liu Wei; Chen Jun; Chen Zheng; Liu Kai; Zhou Guangmin; Sun Yongming; Song Min-Sang; Bao Zhenan; Cui Yi;

  • 作者单位

    Stanford Univ, Dept Mat Sci & Engn, Stanford, CA 94305 USA;

    Stanford Univ, Dept Mat Sci & Engn, Stanford, CA 94305 USA;

    Stanford Univ, Dept Mat Sci & Engn, Stanford, CA 94305 USA|Stanford Univ, Dept Chem Engn, Stanford, CA 94305 USA;

    Stanford Univ, Dept Mat Sci & Engn, Stanford, CA 94305 USA;

    Stanford Univ, Dept Mat Sci & Engn, Stanford, CA 94305 USA;

    Stanford Univ, Dept Mat Sci & Engn, Stanford, CA 94305 USA;

    Stanford Univ, Dept Mat Sci & Engn, Stanford, CA 94305 USA|Samsung Adv Inst Technol, Samsung Elect, Mat Res Ctr, Energy Mat Lab, 130 Samsung Ro, Suwon 16678, Gyeonggi Do, South Korea;

    Stanford Univ, Dept Chem Engn, Stanford, CA 94305 USA;

    Stanford Univ, Dept Mat Sci & Engn, Stanford, CA 94305 USA|Stanford Inst Mat & Energy Sci, SLAC Natl Accelerator Lab, Menlo Pk, CA 94205 USA;

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  • 正文语种 eng
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  • 关键词

    polyurethane; poly(vinylidene fluoride); sticky separator; stretchable batteries; wavy structure;

    机译：聚氨酯;聚偏二氟乙烯;粘性隔板;可拉伸电池;波浪形结构;

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