Based on a liquid metal (eutectic alloy with 90 wt% gallium and 10 wt% indium) anode, a soft, highly elastic, discharge‐current‐controllable, cable‐shaped liquid metal–air battery operated at 25 °C, with effective reactions of Ga − 3e⁻ → Ga³⁺ and O₂ + 2H₂O + 4e⁻ → 4OH⁻ is presented. In the liquid metal electrode, indium is used not only to inhibit the corrosion of gallium in the alkaline electrolyte but also to maintain the liquid state of the anode at room temperature. Thus, the liquid anode can be easily injected into (or extracted from) the battery cavity, leading to an easily renewable anode. In addition, the cable‐shaped battery shows a pressure‐responsive discharge current, owing to the soft, deformable battery body. Due to the liquid anode and flexible carbon fiber‐based cathode, the battery is highly flexible (bending radius < 1 mm) and easily recovers from any degree of bending without electrochemical performance impairment. With its elastic polyacrylic acid‐based gel electrolyte, the battery shows high elasticity, stretching by up to 100% (from 12 to 24 cm), excellent shape recovery from stretched states, and a discharge performance retention of 98.87%. Moreover, this paper provides the possibility to develop a deformable battery based on the liquid metal material.

中文翻译：

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室温下可操作的柔软，高弹性且放电电流可控的共晶镓-铟液态金属-空气电池

基于液态金属（具有90 wt％的镓和10 wt％的铟的低共熔合金）阳极，一种柔软，高弹性，可控制放电电流的电缆状液态金属空气电池，在25°C的温度下有效反应镓- 3E ^- →镓³⁺和O ₂ + 2H ₂ O + 4E ^- →4OH ^-被表达。在液态金属电极中，铟不仅用于抑制碱性电解质中镓的腐蚀，而且用于在室温下保持阳极的液态。因此，可以容易地将液态阳极注入电池腔中（或从电池腔中抽出），从而得到易于再生的阳极。此外，由于柔软的可变形电池主体，电缆形电池还显示出压力响应的放电电流。由于采用液态阳极和基于碳纤维的柔性阴极，该电池具有很高的柔性（弯曲半径<1 mm），并且可以在不影响电化学性能的情况下从任何程度的弯曲中轻松恢复。凭借其基于聚丙烯酸的弹性凝胶电解质，该电池表现出高弹性，可拉伸高达100％（从12到24厘米），从拉伸状态恢复出色的形状，并保持98.87％的放电性能。而且，本文提供了开发基于液态金属材料的可变形电池的可能性。