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Cage-like P4S3 molecule as promising anode with high capacity and cycling stability for Li+/Na+/K+ storage
Journal of Energy Chemistry ( IF 13.1 ) Pub Date : 2020-03-19 , DOI: 10.1016/j.jechem.2020.03.021
Denghu Wei , Jie Yin , Zhicheng Ju , Suyuan Zeng , Haibo Li , Wei Zhao , Yanyan Wei , Huaiyong Li

Phosphorus sulfide cage molecule based on P4S3 was investigated for the first time as anode material for the storage of alkali metal ions (Li+, Na+, K+). Such P4S3 sample was obtained in a large scale by a simple heating reaction of low-cost rep P and S. X-ray diffraction refinement analysis indicates that P4S3 sample possesses a defect rich molecule crystal structure with S/P atom ratio of 0.74. The P4S3 anode delivered a high reversible capacity of 1266 mAh g−1 for lithium-ion batteries at 0.1 A g−1 and good cycling performance. Experimental results demonstrated that the P4S3 anode undergoes a reversible Li-storage reaction of P4S3 + 11 Li+ + 11 e ↔ 0.5 Li4P2S6 + 3 Li3P during cycling. It also exhibited a high capacity of 1002 and 378 mAh g−1 at 0.1 A g−1 for Na+ and K+ storage, respectively. These properties suggest the promising application of P4S3 anode in high energy batteries.



中文翻译:

笼形p 4 š 3分子作为具有高容量有为阳极和循环稳定性对Li + /钠+ / K +存储

首次研究了基于P 4 S 3的硫化磷笼型分子作为阳极材料,用于存储碱金属离子(Li +,Na +,K +)。通过简单的低成本rep P和S的加热反应,可以大规模获得这种P 4 S 3样品。X射线衍射细化分析表明P 4 S 3样品具有S / P的富缺陷分子晶体结构。原子比为0.74。P 4 S 3阳极在0.1 A g -1下为锂离子电池提供了1266 mAh g -1的高可逆容量和良好的骑行表现。实验结果表明,P 4 S 3阳极在循环过程中经历了P 4 S 3  + 11 Li +  + 11 e - ↔0.5 Li 4 P 2 S 6  + 3 Li 3 P的可逆锂存储反应。它还在0.1 A g -1下分别显示出1002和378 mAh g -1的高容量,用于Na +和K +储存。这些性质表明P 4 S 3阳极在高能电池中的应用前景广阔。

更新日期:2020-03-19
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