High Voltage, Flexible and Low Cost All‐Solid‐State Lithium Metal Batteries with a Wide Working Temperature Range,ChemistrySelect

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High Voltage, Flexible and Low Cost All‐Solid‐State Lithium Metal Batteries with a Wide Working Temperature Range
ChemistrySelect ( IF 1.9 ) Pub Date : 2020-01-21 , DOI: 10.1002/slct.201904206
Yuchan Zhang ₁ , Huifang Fei ₁ , Yongling An ₁ , Chuanliang Wei ₁ , Jinkui Feng ₁

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In this work, a flexible 4 V all‐solid‐state lithium metal battery is reported. In this battery, polyvinylidene fluoride (PVDF)/Li_6.40La₃Zr_1.40Ta_0.60O₁₂ (LLZTO) composite electrolyte is used as the electrolyte and low cost LiMn₂O₄ (LMO) is used as the cathode. It is found that this all‐solid‐state battery can work from room temperature to 80 °C. At 80 °C, a capacity retention of 78.8% is obtained after 50 cycles while battery with liquid electrolyte last only one cycle. Further researches discover that liquid electrolyte react continuously with LMO while the solid‐state electrolyte is stable with LMO at high temperature. These results may be useful for the developing of low cost, high energy and high safety batteries system.

中文翻译：

宽工作温度范围的高电压，低成本，低成本全固态锂金属电池

在这项工作中，报告了一种灵活的4 V全固态锂金属电池。在该电池中，使用聚偏二氟乙烯（PVDF）/ Li _6.40 La ₃ Zr _1.40 Ta _0.60 O ₁₂（LLZTO）复合电解质作为电解质，并使用低成本的LiMn ₂ O _4。（LMO）用作阴极。发现这种全固态电池可以在室温至80°C的温度下工作。在80°C下，经过50次循环后，容量保持率为78.8％，而带有液态电解质的电池仅持续1次循环。进一步的研究发现，液态电解质与LMO连续反应，而固态电解质在高温下对LMO稳定。这些结果可能对开发低成本，高能量和高安全性的电池系统有用。

更新日期：2020-01-22

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