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Core-Shell Fe1-xS@Na2.9PS3.95Se0.05 Nanorods for Room Temperature All-Solid-State Sodium Batteries with High Energy Density
Wan, Hongli; Mwizerwa, Jean Pierre; Qi, Xingguo; Liu, Xin; Xu, Xiaoxiong; Li, Hong; Hu, Yong-Sheng; Yao, Xiayin
2018
发表期刊ACS NANO
卷号12期号:3页码:2809-2817
摘要High ionic conductivity electrolyte and intimate interfacial contact are crucial factors to realize high-performance all-solid-state sodium batteries. Na2.9PS3.95Se0.05 electrolyte with reduced particle size of 500 nm is first synthesized by a simple liquid-phase method and exhibits a high ionic conductivity of 1.21 x 10(-4) S cm(-1), which is comparable with that synthesized with a solid-state reaction. Meanwhile, a general interfacial architecture, that is, Na2.9PS3.95Se0.05 electrolyte uniformly anchored on Fe1-xS nanorods, is designed and successfully prepared by an in situ liquid-phase coating approach, forming core-shell structured Fe1-xS@Na(2.9)PS(3.9)5Se(0.05) nanorods and thus realizing an intimate contact interface. The Fe1-xS@Na2.9PS3.95Se0.05/Na2.9PS3.95Se0.05/Na all-solid-state sodium battery demonstrates high specific capacity and excellent rate capability at room temperature, showing reversible discharge capacities of 899.2, 795.5, 655.1, 437.9, and 300.4 mAh g(-1) at current densities of 20, 50, 100, 150, and 200 mA g(-1), respectively. The obtained all-solid-state sodium batteries show very high energy and power densities up to 910.6 Wh kg(-1) and 201.6 W kg(-1) based on the mass of Fe1-xS at current densities of 20 and 200 mA g(-1), respectively. Moreover, the reaction mechanism of Fe1-xS is confirmed by means of ex situ X-ray diffraction techniques, showing that partially reversible reaction occurs in the Fe1-xS electrode after the second cycle, which gives the obtained all-solid-state sodium battery an exceptional cycling stability, exhibiting a high capacity of 494.3 mAh g(-1) after cycling at 100 mA g(-1) for 100 cycles. This contribution provides a strategy for designing high-performance room temperature all-solid-state sodium battery.
关键词Ion Batteries Superionic Conductor Lithium Batteries Cathode Materials Doped Graphene Electrolyte Na3sbs4 Anode Performance Capability
学科领域Chemistry ; Science & Technology - Other Topics ; Materials Science
语种英语
文献类型期刊论文
条目标识符http://ir.nimte.ac.cn/handle/174433/16771
专题2018专题
推荐引用方式
GB/T 7714
Wan, Hongli,Mwizerwa, Jean Pierre,Qi, Xingguo,et al. Core-Shell Fe1-xS@Na2.9PS3.95Se0.05 Nanorods for Room Temperature All-Solid-State Sodium Batteries with High Energy Density[J]. ACS NANO,2018,12(3):2809-2817.
APA Wan, Hongli.,Mwizerwa, Jean Pierre.,Qi, Xingguo.,Liu, Xin.,Xu, Xiaoxiong.,...&Yao, Xiayin.(2018).Core-Shell Fe1-xS@Na2.9PS3.95Se0.05 Nanorods for Room Temperature All-Solid-State Sodium Batteries with High Energy Density.ACS NANO,12(3),2809-2817.
MLA Wan, Hongli,et al."Core-Shell Fe1-xS@Na2.9PS3.95Se0.05 Nanorods for Room Temperature All-Solid-State Sodium Batteries with High Energy Density".ACS NANO 12.3(2018):2809-2817.
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