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Architecturing aligned orthorhombic Nb2O5 nanowires toward sodium-ion hybrid capacitor and Lithium–Sulfur battery applications
FlatChem ( IF 5.9 ) Pub Date : 2021-02-26 , DOI: 10.1016/j.flatc.2021.100236
Jia Jin , Jingsheng Cai , Xiangguo Wang , Zhongti Sun , Yingze Song , Jingyu Sun

In recent years, orthorhombic Nb2O5 (T-Nb2O5) has been considered as a promising anode material for sodium-ion hybrid capacitors (SICs) due to its fast ion storage properties. Moreover, the T-Nb2O5 has a strong adsorption effect with sulfur species, which shows merits for efficient management of polysulfides in lithium–sulfur (Li–single bondS) batteries. Herein, we in target prepared T-Nb2O5 nanowires (T-Nb2O5 NWs) and systematically analyzed the electrochemical performances with regards to SICs and Li–S batteries. The resulting T-Nb2O5 NWs//activated carbon SICs delivered a high energy density (106.2 Wh kg−1) and power density (4976 W kg−1). Thus-derived flexible SICs manifested excellent performances upon deformation, which was applicable for fast-charging wearable electronic sensors. Meanwhile, Li–single bondS batteries incorporating T-Nb2O5/graphene/sulfur cathode offered a discharge capacity of 1300 and 917.1 mAh g−1 at 0.2 and 1C, respectively.



中文翻译:

针对钠离子混合电容器和锂硫电池应用,构造排列正交的Nb 2 O 5纳米线

近年来,由于其快速的离子存储特性,正交晶Nb 2 O 5T -Nb 2 O 5)被认为是钠离子混合电容器(SIC)的有希望的阳极材料。此外,T -Nb 2 O 5对硫物质具有很强的吸附作用,这显示了有效管理锂硫(Li– 单键S)电池中多硫化物的优点。在此,我们以目标制备的T -Nb 2 O 5纳米线(T -Nb 2 O 5NWs)并系统地分析了SIC和Li-S电池的电化学性能。所得的T -Nb 2 O 5 NWs //活性炭SIC传递了高的能量密度(106.2 Wh kg -1)和功率密度(4976 W kg -1)。因此衍生的柔性SIC在变形时表现出出色的性能,适用于快速充电的可穿戴电子传感器。同时,单键掺有T -Nb 2 O 5 /石墨烯/硫阴极的Li- S电池在0.2和1C时的放电容量分别为1300和917.1 mAh g -1

更新日期:2021-03-11
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