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Sepiolite Enfolded Sulfur/ZnO Binary Composite Cathode Material for Li-S Battery
Frontiers in Materials ( IF 3.2 ) Pub Date : 2020-04-08 , DOI: 10.3389/fmats.2020.00109
Chelladurai Kalaiselvi , Rengapillai Subadevi , Fu-Ming Wang , Marimuthu Sivakumar

Lithium-Sulfur (Li-S) batteries have become an incredible challenge for the approaching age of high-vitality stockpiling gadgets. Nevertheless, one of the main specialized issues emerging in Li-S batteries is the polysulfide disintegration among electrodes and striking capacity limit. Here, sieved sepiolite (200 mesh sieve) has been favored as an added substance material to counter the above difficulties in the sulfur battery. The zinc oxide nanoparticles were prepared by co-precipitation method and a Sulfur/post-treated sieved Sepiolite/Zinc Oxide (S/PTSp/ZnO) nanocomposite was prepared by warmth treatment. The prepared composite was described by XRD, FTIR, RAMAN, SEM with EDAX, TEM, XPS, TG, and Electrochemical analysis. The S/PTSp/ZnO composite cathode exhibited an initial discharge capacity of 1,391 mAhg−1 and attained a stable capacity of 765 mAhg−1 at 200 cycles. In conclusion, Li-S batteries can be relied upon to capably build up the utilization of sulfur and limit the disintegration of polysulfides into an electrolyte.



中文翻译:

Li-S电池用海泡石包裹的硫/ ZnO二元复合正极材料

锂硫(Li-S)电池已成为高活力库存小配件即将到来的时代的一个令人难以置信的挑战。然而,Li-S电池中出现的主要专业问题之一是电极之间的多硫化物分解和惊人的容量极限。在这里,筛分的海泡石(200目筛)已被推荐作为添加物质来克服硫电池中的上述困难。通过共沉淀法制备氧化锌纳米颗粒,并通过温热处理制备硫/后处理过筛的海泡石/氧化锌(S / PTSp / ZnO)纳米复合材料。通过XRD,FTIR,RAMAN,具有EDAX的SEM,TEM,XPS,TG和电化学分析来描述所制备的复合材料。S / PTSp / ZnO复合阴极的初始放电容量为1,391 mAhg -1并在200次循环中达到765 mAhg -1的稳定容量。总之,可以依靠Li-S电池来提高硫的利用率,并限制多硫化物向电解质中的分解。

更新日期:2020-04-08
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