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Flexible and stable high-energy lithium-sulfur full batteries with only 100% oversized lithium

Author

Listed:
  • Jian Chang

    (The Hong Kong Polytechnic University)

  • Jian Shang

    (The Hong Kong Polytechnic University)

  • Yongming Sun

    (Stanford University)

  • Luis K. Ono

    (Okinawa Institute of Science and Technology Graduate University)

  • Dongrui Wang

    (The Hong Kong Polytechnic University)

  • Zhijun Ma

    (The Hong Kong Polytechnic University)

  • Qiyao Huang

    (The Hong Kong Polytechnic University)

  • Dongdong Chen

    (The Hong Kong Polytechnic University)

  • Guoqiang Liu

    (The Hong Kong Polytechnic University)

  • Yi Cui

    (Stanford University
    SLAC National Accelerator Laboratory)

  • Yabing Qi

    (Okinawa Institute of Science and Technology Graduate University)

  • Zijian Zheng

    (The Hong Kong Polytechnic University)

Abstract

Lightweight and flexible energy storage devices are urgently needed to persistently power wearable devices, and lithium-sulfur batteries are promising technologies due to their low mass densities and high theoretical capacities. Here we report a flexible and high-energy lithium-sulfur full battery device with only 100% oversized lithium, enabled by rationally designed copper-coated and nickel-coated carbon fabrics as excellent hosts for lithium and sulfur, respectively. These metallic carbon fabrics endow mechanical flexibility, reduce local current density of the electrodes, and, more importantly, significantly stabilize the electrode materials to reach remarkable Coulombic efficiency of >99.89% for a lithium anode and >99.82% for a sulfur cathode over 400 half-cell charge-discharge cycles. Consequently, the assembled lithium-sulfur full battery provides high areal capacity (3 mA h cm−2), high cell energy density (288 W h kg−1 and 360 W h L−1), excellent cycling stability (260 cycles), and remarkable bending stability at a small radius of curvature (

Suggested Citation

  • Jian Chang & Jian Shang & Yongming Sun & Luis K. Ono & Dongrui Wang & Zhijun Ma & Qiyao Huang & Dongdong Chen & Guoqiang Liu & Yi Cui & Yabing Qi & Zijian Zheng, 2018. "Flexible and stable high-energy lithium-sulfur full batteries with only 100% oversized lithium," Nature Communications, Nature, vol. 9(1), pages 1-11, December.
    • Handle: RePEc:nat:natcom:v:9:y:2018:i:1:d:10.1038_s41467-018-06879-7
    DOI: 10.1038/s41467-018-06879-7
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