Yarn-ball-shaped P2-Na2/3Fe1/2Mn1/2O2 nanofibers prepared by magnetic-assisted electrospinning method as high-performance cathode material for Na-ion batteries

被引：15

作者：

Guan, Miao ^{[1
,2
]}

Chen, Jiabin ^{[1
]}

Zhang, Xiaoping ^{[1
]}

Yang, Liu ^{[1
]}

Wang, Binjue ^{[1
]}

Zhong, Shengkui ^{[1
]}

机构：

[1] Soochow Univ, Sch Iron & Steel, Suzhou 215000, Peoples R China

[2] Soochow Univ, Coll Text & Clothing Engn, Suzhou 215000, Peoples R China

来源：

MATERIALS LETTERS | 2019年 / 254卷

基金：

中国国家自然科学基金;

关键词：

Na-ion batteries; Na2/3Fe1/2Mn1/2O2; Electrospinning; Nanocomposites; Electrical properties; Energy storage; Conversion; P2-TYPE; CYCLE;

D O I：

10.1016/j.matlet.2019.07.001

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Yarn-ball-shaped P2-Na2/3Fe1/2Mn1/2O2 nanofiber cathode material is synthesized by a magnetic-assisted electrospinning method. Based on the electrospinning method, an electromagnetic-field is performed to keep the nanofibers rotating to form the yarn-ball-like architecture. XRD result indicates that the sample is a pure P2-type Na2/3Fe1/2Mn1/2O2 phase with good crystallization. SEM results show that the diameter of the balls is about 10-50 mu m, and the balls are composed of nanofibers with a diameter of 200-400 nm. This special architecture is beneficial to increase the Na+ diffusion speed and tap-density of nanofiber material. Electrochemical tests show that the sample has a high discharge specific capacity of 218.6 mAh g(1) at 0.1 C rate, and exhibits good rate capability and excellent cycling performance. (C) 2019 Elsevier B.V. All rights reserved.

引用

页码：24 / 27

页数：4

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