Universal Renaissance Strategy of Metal Fluoride in Secondary Ion Batteries Enabled by Liquid Metal Gallium,Advanced Materials

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Universal Renaissance Strategy of Metal Fluoride in Secondary Ion Batteries Enabled by Liquid Metal Gallium
Advanced Materials ( IF 27.4 ) Pub Date : 2023-04-06 , DOI: 10.1002/adma.202301442
Jinghao Yang _{1,

2} , Wei Zhou ₁ , Jiaming Hu ₃ , Ruohan Jiang ₁ , Guangai Sun ₂ , Jie Zhao ₁ , Fei Wang ₁ , Fang Fang _{1,

4} , Yun Song ₁ , Dalin Sun ₁

Affiliation

All-solid-state alkali ion batteries represent a future trend in battery technology, as well as provide an opportunity for low-cost metal fluoride electrode materials, if certain intrinsic problems can be resolved. In this work, a liquid metal activation strategy is proposed in which liquid Ga elements are generated in situ and doped into the LiF crystal structure by introducing a small amount of GaF₃. Benefiting from these two Ga states of existence, in which the liquid metal Ga can continuously maintain conformable ion/electron-transport networks, while doped Ga in the LiF crystal structure catalyzes LiF splitting, the lithium-ion storage capacity of MnF₂ significantly increases by 87%. A similar effect can be obtained in FeF₃, where the sodium-ion storage capacity is enhanced by 33%. This universal strategy with few restrictions can be used to realize a complete renaissance of metal fluorides, as well as offer an opportunity for the new application of liquid metals in the field of energy storage.

中文翻译：

液态金属镓实现二次离子电池中金属氟化物的普遍复兴策略

全固态碱离子电池代表了电池技术的未来趋势，如果某些固有问题得到解决，也为低成本金属氟化物电极材料提供了机会。在这项工作中，提出了一种液态金属活化策略，即原位生成液态Ga元素，并通过引入少量GaF ₃将其掺杂到LiF晶体结构中。受益于这两种Ga的存在状态，其中液态金属Ga可以持续保持一致的离子/电子传输网络，而LiF晶体结构中的掺杂Ga则催化LiF分裂，MnF 2 的锂离子存储能力_显着提高增加了87%。_{FeF 3}也能获得类似的效果，钠离子储存能力提高了33%。这种几乎没有限制的通用策略可用于实现金属氟化物的彻底复兴，并为液态金属在储能领域的新应用提供机会。

更新日期：2023-04-06

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