Preparation and electrochemical properties of nanocable-like Nb2O5/surface-modified carbon nanotubes composites for anode materials in lithium ion batteries

被引：100

作者：

Shi, Chongfu ^{[1
]}

Xiang, Kaixiong ^{[1
]}

Zhu, Yirong ^{[1
]}

Chen, Xianhong ^{[1
]}

Zhou, Wei ^{[1
]}

Chen, Han ^{[1
]}

机构：

[1] Hunan Univ Technol, Coll Met & Mat Engn, Zhuzhou 412007, Peoples R China

来源：

ELECTROCHIMICA ACTA | 2017年 / 246卷

关键词：

Hydrothermal method; niobium pentoxide; carbon nanotubes; composites; electrochemical properties; HYDROGEN STORAGE; NB2O5; NANOBELTS; CAPACITY; PERFORMANCE; HYBRID; INTERCALATION; TEMPLATE; NANORODS; NANOCOMPOSITES; NANOCRYSTALS;

D O I：

10.1016/j.electacta.2017.06.109

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Uniform nanocable-like Nb2O5/surface-modified carbon nanotubes (SMCNTs) composites for anode materials in lithium ion batteries were synthesized by hydrothermal method. It was indicated that Nb2O5 nanoparticles were tightly and uniformly cultivated on carbon nanotubes when CNTs were pretreated with concentrated H2SO4. As a result, Nb2O5/SMCNTs composite materials showed remarkable electrochemical performance as anode materials for lithium-ion batteries. It delivered a high reversible capacity of 441 mA h g(-1) cycled at the current density of 40 mA g(-1) after 100 cycles and an excellent rate capacity of 185 mA h g(-1) at the high current density of 5000 mA g(-1) after 200 cycles. (C) 2017 Elsevier Ltd. All rights reserved.

引用

页码：1088 / 1096

页数：9

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