Lithium Molybdate (Li2MoO3)−Sulfur Battery,Batteries & Supercaps

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Lithium Molybdate (Li2MoO3)−Sulfur Battery
Batteries & Supercaps ( IF 5.1 ) Pub Date : 2020-01-16 , DOI: 10.1002/batt.201900176
Ruchira R. Dharmasena _{1,

2} , Alejandro Martinez‐Garcia _{2,

3,

4} , Veerendra Atla _{2,

3} , Muhammad Z. Akram ₂ , Gamini U. Sumanasekera _{1,

2} , Mahendra K. Sunkara _{2,

3}

Affiliation

Here, we present a lithiated molybdate‐sulfur battery with practical energy density greater than 300 Wh kg⁻¹. Electrochemically pre‐lithiated α‐MoO₃ is prepared to form lithium molybdate anode which was tested against mesoporous titania coated sulfur cathode. A pouch cell with a capacity of 5 mAh made using pre‐lithiated lithium molybdate nanowires as anode and mesoporous TiO₂ (titania) coated carbon‐sulfur cathode exhibited 1.4 V operating voltage and exhibited 620 Wh kg⁻¹ capacity in the first cycle, dropped to ∼400 Wh kg⁻¹ in 2^nd cycle and 300 Wh kg⁻¹ at 100^th cycle. Various prelithiation studies indicate that electrochemical lithiation of MoO₃ nanomaterials is crucial to make Li₂MoO₃ material suitable as anode. In situ electrochemical lithiation of MoO₃ anode is introduced as a method to fabricate lithium molybdate (Li₂MoO₃)‐sulfur pouch cells in one step.

中文翻译：

钼酸锂（Li2MoO3）-硫电池

在这里，我们提出一种锂离子化的钼酸硫电池，其实际能量密度大于300 Wh kg ^-1。电化学预锂化α-的MoO ₃制备，以形成钼酸锂阳极其对介孔二氧化钛涂覆的硫阴极测试。使用预锂化的钼酸锂纳米线作为阳极和介孔TiO ₂（二氧化钛）涂层的碳硫阴极制成的容量为5 mAh的袋式电池在第一个循环中表现出1.4 V的工作电压和620 Wh kg ^-1的容量，跌落在^第二个周期达到〜400 Wh kg ^-1，在^第100^个周期达到300 Wh kg ^-1循环。各种预锂化研究表明，MoO ₃纳米材料的电化学锂化对于使Li ₂ MoO ₃材料适合用作阳极至关重要。引入MoO ₃阳极的原位电化学锂化作为一种一步制造钼酸锂（Li ₂ MoO ₃）-硫袋电池的方法。

更新日期：2020-01-16

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