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A reinforced-concrete-like ultrathick cathode supported by carbonization kapok fibers for high loading lithium sulfur batteries
Materials Letters ( IF 3 ) Pub Date : 2020-04-01 , DOI: 10.1016/j.matlet.2020.127312
Jun Ma , Xin xiu Yan , Huan Zhang , Mei zhen Qu , Zhi kai Wei

Abstract It’s a focus on high sulfur loading electrode for lithium sulfur batteries (LSBs) to improve the practical energy density. Blade casting method is an ideal method due to its efficiency and convenience that means thick electrode was utilized to increase sulfur loading. However, the weak strength and sluggish kinetics hinder to improve the practical energy density. To overcome issues, carbonization kapok fibers (CKFs) were overlapped to form the percolation network like rebar in the reinforced concrete. The cathode (sulfur loading: 8.22 mg cm−2) exhibits the superior initial capacity (1090 mAh g−1 at 0.1 C) and cycling performance (728 mAh g−1 after 80 cycles).

中文翻译:

用于高负载锂硫电池的由碳化木棉纤维支撑的钢筋混凝土状超厚阴极

摘要 锂硫电池(LSBs)高硫负载电极的研究重点是提高实际能量密度。叶片铸造法是一种理想的方法,因为它的效率和便利性意味着使用厚电极来增加硫负载。然而,弱的强度和缓慢的动力学阻碍了实际能量密度的提高。为了克服这些问题,碳化木棉纤维 (CKF) 被重叠以形成像钢筋混凝土中的钢筋一样的渗透网络。正极(硫负载:8.22 mg cm-2)表现出优异的初始容量(0.1 C 时为 1090 mAh g-1)和循环性能(80 次循环后为 728 mAh g-1)。
更新日期:2020-04-01
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