Hierarchically nanorod structured Na2Ti6O13/Na2Ti3O7 nanocomposite as a superior anode for high-performance sodium ion battery

被引：17

作者：

Chandel, Sakshee ^{[1
]}

Lee, Seulgi ^{[2
]}

Lee, Seunggyeong ^{[2
]}

Kim, Sungjin ^{[2
]}

Singh, Satendra Pal ^{[3
]}

Kim, Jaekook ^{[2
]}

Rai, Alok Kumar ^{[1
]}

机构：

[1] Univ Delhi, Dept Chem, Delhi 110007, India

[2] Chonnam Natl Univ, Dept Mat Sci & Engn, 300 Yongbong Dong, Gwangju 500757, South Korea

[3] Sejong Univ, Fac Nanotechnol & Adv Mat Engn, Seoul 143747, South Korea

来源：

JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 2020年 / 877卷

基金：

新加坡国家研究基金会;

关键词：

Sodium titanate; Nanorod; Anode; Sodium intercalation; Sodium ion batteries; NEGATIVE ELECTRODE MATERIALS; NA2TI3O7; TITANATE; CAPACITY; NANOSHEETS; LITHIUM;

D O I：

10.1016/j.jelechem.2020.114747

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

In this work, the nanorod structured Na2Ti6O13/Na2Ti3O7 nanocomposite anode is synthesized via facile solvothermal method for sodium ion battery application. The Lebail refinement analysis was performed to obtain the phase fractions ratio of Na2Ti6O13 and Na2Ti3O7 in the nanocomposite sample. It was found to be similar to 82% and similar to 18% for Na2Ti6O13 and Na2Ti3O7 phases respectively. The microstructure analysis confirmed the nanorods morphology of the nanocomposite sample, which arc self-assembled in hierarchal manner and exhibits the flower-like morphology at high magnifications. The obtained morphology demonstrates remarkable electrochemical performances such as superior cycling sta bility of 182 mAh g at 100 mA after 165 cycles and high rate capability of 161 mAh g(-1) at 500 mA g(-1) over 100 cycles, which can be ascribed to the excellent synergetic effect between Na2Ti6O13 and Na2Ti3O7 phases that could effectively nullify the drawbacks of individual phases and thereby act as complementary to each other advantages.

引用

页数：7

共 46 条

[1] Nature-Inspired Na2Ti3O7 Nanosheets-Formed Three-Dimensional Microflowers Architecture as a High-Performance Anode Material for Rechargeable Sodium-Ion Batteries [J].