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High-Energy-Density Foldable Battery Enabled by Zigzag-Like Design

机译：采用Zigzag-Like设计的高能量密度可折叠电池

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摘要

Flexible batteries, seamlessly compatible with flexible and wearable electronics, attract a great deal of research attention. Current designs of flexible batteries struggle to meet one of the most extreme yet common deformation scenarios in practice, folding, while retaining high energy density. Inspired by origami folding, a novel strategy to fabricate zigzag-like lithium ion batteries with superior foldability is proposed. The battery structure could approach zero-gap between two adjacent energy storage segments, achieving an energy density that is 96.4% of that in a conventional stacking cell. A foldable battery thus fabricated demonstrates an energy density of 275 Wh L-1 and is resilient to fatigue over 45 000 dynamic cycles with a folding angle of 130 degrees, while retaining stable electrochemical performance. Additionally, the power stability and resilience to nail shorting of the foldable battery are also examined.
机译：与柔性和可穿戴电子设备无缝兼容的柔性电池引起了很多研究关注。当前的柔性电池设计难以满足实践中最极端但最常见的变形方案之一，即折叠，同时保持高能量密度。受到折纸折叠的启发，提出了一种新颖的策略来制造具有优异折叠性的锯齿状锂离子电池。电池结构可以在两个相邻的储能段之间达到零间隙，从而实现了传统堆叠电池的96.4％的能量密度。如此制造的可折叠电池表现出275 Wh L-1的能量密度，并且在45 000个动态循环中具有130度的折叠角，可抵抗疲劳，同时保持稳定的电化学性能。另外，还检查了可折叠电池的电源稳定性和对钉子短路的弹性。

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  • 来源
    《Advanced energy materials》 |2019年第4期|1802998.1-1802998.7|共7页
  • 作者

    Liao Xiangbiao; Shi Changmin; Wang Tianyang; Qie Boyu; Chen Youlong; Yang Pengfei; Cheng Qian; Zhai Haowei; Chen Meijie; Wang Xue; Chen Xi; Yang Yuan;

  • 作者单位

    Columbia Univ, Dept Earth & Environm Engn, Yonghong Zhang Family Ctr Adv Mat Energy & Enviro, New York, NY 10025 USA;

    Columbia Univ, Dept Appl Phys & Appl Math, Program Mat Sci & Engn, New York, NY 10025 USA;

    Columbia Univ, Dept Appl Phys & Appl Math, Program Mat Sci & Engn, New York, NY 10025 USA;

    Columbia Univ, Dept Appl Phys & Appl Math, Program Mat Sci & Engn, New York, NY 10025 USA;

    Xi An Jiao Tong Univ, Sch Aerosp, Xian 710049, Shaanxi, Peoples R China;

    Xi An Jiao Tong Univ, Sch Aerosp, Xian 710049, Shaanxi, Peoples R China;

    Columbia Univ, Dept Appl Phys & Appl Math, Program Mat Sci & Engn, New York, NY 10025 USA;

    Columbia Univ, Dept Appl Phys & Appl Math, Program Mat Sci & Engn, New York, NY 10025 USA;

    Columbia Univ, Dept Appl Phys & Appl Math, Program Mat Sci & Engn, New York, NY 10025 USA|Harbin Inst Technol, Sch Energy Sci & Engn, Harbin 150001, Heilongjiang, Peoples R China;

    Columbia Univ, Dept Appl Phys & Appl Math, Program Mat Sci & Engn, New York, NY 10025 USA|Harbin Inst Technol, Sch Astronaut, Harbin 150001, Heilongjiang, Peoples R China;

    Columbia Univ, Dept Earth & Environm Engn, Yonghong Zhang Family Ctr Adv Mat Energy & Enviro, New York, NY 10025 USA;

    Columbia Univ, Dept Appl Phys & Appl Math, Program Mat Sci & Engn, New York, NY 10025 USA;

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  • 正文语种 eng
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  • 关键词

    energy density; flexible; foldable; lithium ion batteries; nonflammable;

    机译：能量密度;柔性;可折叠;锂离子电池;不易燃;

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