NaV6O15 Nanoflakes with Good Cycling Stability as a Cathode for Sodium Ion Battery

被引：65

作者：

He, Hanna ^{[1
]}

Zeng, Xianguang ^{[2
]}

Wang, Haiyan ^{[1
,2
]}

Chen, Na ^{[1
]}

Sun, Dan ^{[1
]}

Tang, Yougen ^{[1
]}

Huang, Xiaobing ^{[3
]}

Pan, Yingfen ^{[1
,4
]}

机构：

[1] Cent S Univ, Coll Chem & Chem Engn, Changsha 410083, Hunan, Peoples R China

[2] Mat Corros & Protect Key Lab Sichuan Prov, Zigong 643000, Peoples R China

[3] Hunan Univ Arts & Sci, Coll Chem & Chem Engn, Changde 415000, Peoples R China

[4] Dongshan Entry Exit Inspect & Quarantine Bur PRC, Dongshan 363401, Peoples R China

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 2015年 / 162卷 / 01期

关键词：

RECHARGEABLE LITHIUM BATTERIES; ELECTROCHEMICAL PROPERTIES; POSITIVE ELECTRODE; LIV3O8; NANOSHEETS; ANODE MATERIAL; LIFEPO4; MICROSPHERES; PERFORMANCE; CHALLENGES; NA0.44MNO2;

D O I：

10.1149/2.0151501jes

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

070208 [无线电物理];

摘要：

Developing high-capacity cathode material is still a big challenge for room temperature Na-ion batteries. Herein, NaV6O15 nanoflakes are synthesized by a facile two-step method, in which (NH4)(0.5)V2O5 nanoflakes are first achieved by a hydrothermal approach and then transferred to NaV6O15 by a solid state reaction. The as-prepared materials are well characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). When used as a cathode for Na-ion battery, the NaV6O15 electrode exhibits good electrochemical performance with a high initial discharge capacity of 147.7 mAh g(-1) at 15 mA g(-1) and a capacity retention of 92.2% after 30 cycles during 1.5 similar to 4.0 V. The good electrochemical properties of NaV6O15 nanoflakes are mainly due to their rigid structure and stable two-dimensional nanoflake morphology. (C) 2014 The Electrochemical Society. All rights reserved.

引用

页码：A39 / A43

页数：5

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