A hybrid electrolyte, by uniting aqueous and organic electrolyte with a water‐stable lithium super ionic conductor ceramic (LISICON) plate, was proposed to circumvent the drawbacks of nonaqueous Li‐air batteries, such as corrosion of metallic Li from humidity, decomposition of organic solvents and insoluble discharge products clogging air electrode. However, safety issues deteriorate when the brittle ceramic plate fails to separate organic and aqueous solutions. This study aimed to improve the safety of the hybrid electrolyte based Li‐air battery, by designing a liquid anode of lithium biphenyl (LiBP) replacing the lithium metal as the mild reaction between LiBP and aqueous electrolyte without combustion. Moreover, sputtering Ti layer onto the anodic side of the ceramic plate can improve chemical stability of interface between the liquid anode and solid electrolyte. In this system, the cell exhibited a relatively high discharge voltage of 2.81 V at the current density of 0.5 mA cm⁻², as well as a specific power of 1638 W kg⁻¹ at the current density of 6 mA cm⁻² by using this liquid anode. The cycling life exceeded over 120 cycles at the current density of 0.5 mA cm⁻². The ex situ Raman spectrometry and in situ GC‐MS analyses reveal that the redox reaction of BP⁻/BP and OH⁻/O₂ in anolyte and catholyte respectively can deliver large capacity during cycling.

中文翻译：

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带有混合电解质的高安全性锂空气电池用联苯锂液体阳极

提出了一种混合电解质，通过将水和有机电解质与水稳定的锂超离子导体陶瓷（LISICON）板结合在一起，以克服非水锂空气电池的缺点，例如由于潮湿腐蚀金属锂，有机物分解溶剂和不溶性放电产物堵塞空气电极。然而，当脆性陶瓷板不能分离有机溶液和水溶液时，安全性问题恶化。这项研究旨在通过设计液体联苯锂（LiBP）阳极代替锂金属作为LiBP与水性电解质之间的温和反应而不燃烧，从而提高基于混合电解质的锂空气电池的安全性。此外，将Ti层溅射到陶瓷板的阳极侧可以提高液体阳极与固体电解质之间的界面的化学稳定性。在此系统中，电池在0.5 mA cm的电流密度下表现出相对较高的2.81 V放电电压^-2，以及1638的特定功率W.千克^-1处的6毫安厘米的电流密度^-2通过使用该液体阳极。在0.5 mA cm ^-2的电流密度下，循环寿命超过120个循环。所述易地拉曼光谱和原位GC-MS分析表明，BP的氧化还原反应^- / BP和OH ^- / O ₂分别在阳极电解液和阴极电解液可以在循环过程中提供大容量。