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A Room-Temperature Molten Hydrate Electrolyte for Rechargeable Zinc–Air Batteries

机译：用于可充电锌空气电池的室温熔融水合物电解质

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摘要

Aqueous Zn-based batteries are attracting extensive interest because of their economic feasibility and potentially high energy density. However, poor rechargeability of Zn anode in conventional electrolytes resulting from dendrite formation and self-corrosion hinders their practical implementation. Herein, a Zn molten hydrate composed of inorganic Zn salt and water is demonstrated as an advantageous electrolyte for solving these issues. In this electrolyte, dendrite-free Zn deposition/dissolution reaction with a high Coulombic efficiency (approximate to 99%) as well as long-term stability, free from CO2 poisoning are realized. The resultant Zn-air cell exhibits a reversible capacity of 1000 mAh g((catalyst))(-1) over 100 cycles at 30 degrees C. Combined with the intrinsic safety associated with aqueous chemistry and cost benefit of the raw material, the present Zn-air battery makes a strong candidate for large-scale energy storage.
机译：锌基水电池由于其经济可行性和潜在的高能量密度而引起了广泛的关注。然而，由于枝晶的形成和自腐蚀导致的常规电解质中锌阳极的较差的再充电能力阻碍了它们的实际应用。在本文中，由无机锌盐和水组成的锌熔融水合物被证明是解决这些问题的有利电解质。在该电解质中，实现了具有高库仑效率（约99％）以及长期稳定性，无CO 2中毒的无枝晶的Zn沉积/溶解反应。所得的锌空气电池在30摄氏度的100个循环中显示出1000 mAh g（（催化剂））（-1）的可逆容量。结合与水化学相关的本质安全性和原料的成本优势，本发明锌空气电池非常适合大规模储能。

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  • 来源
    《Advanced energy materials》 |2019年第22期|1900196.1-1900196.8|共8页
  • 作者

    Chen Chih-Yao; Matsumoto Kazuhiko; Kubota Keigo; Hagiwara Rika; Xu Qiang;

  • 作者单位

    AIST Kyoto Univ, Natl Inst Adv Ind Sci & Technol AIST, Chem Energy Mat Open Innovat Lab ChEM OIL, Sakyo Ku, Kyoto 6068501, Japan;

    AIST Kyoto Univ, Natl Inst Adv Ind Sci & Technol AIST, Chem Energy Mat Open Innovat Lab ChEM OIL, Sakyo Ku, Kyoto 6068501, Japan|Kyoto Univ, Grad Sch Energy Sci, Sakyo Ku, Kyoto 6068501, Japan;

    AIST Kyoto Univ, Natl Inst Adv Ind Sci & Technol AIST, Chem Energy Mat Open Innovat Lab ChEM OIL, Sakyo Ku, Kyoto 6068501, Japan|Natl Inst Adv Ind Sci & Technol, Res Inst Electrochem Energy, Ikeda, Osaka 5638577, Japan;

    AIST Kyoto Univ, Natl Inst Adv Ind Sci & Technol AIST, Chem Energy Mat Open Innovat Lab ChEM OIL, Sakyo Ku, Kyoto 6068501, Japan|Kyoto Univ, Grad Sch Energy Sci, Sakyo Ku, Kyoto 6068501, Japan;

    AIST Kyoto Univ, Natl Inst Adv Ind Sci & Technol AIST, Chem Energy Mat Open Innovat Lab ChEM OIL, Sakyo Ku, Kyoto 6068501, Japan|Natl Inst Adv Ind Sci & Technol, Res Inst Electrochem Energy, Ikeda, Osaka 5638577, Japan;

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  • 正文语种 eng
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  • 关键词

    aqueous batteries; ionic liquids; molten hydrates; zinc anodes; zinc-air batteries;

    机译：含水电池;离子液体;熔融水合物;锌阳极;锌 - 空气电池;

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