skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Structure-dependent performance of TiO 2/C as anode material for Na-ion batteries

Abstract

The performance of energy storage materials is highly dependent on their nanostructures. Herein, hierarchical rod-in-tube TiO 2 with a uniform carbon coating is synthesized as the anode material for sodium-ion batteries by a facile solvothermal method. This unique structure consists of a tunable nanorod core, interstitial hollow spaces, and a functional nanotube shell assembled from two-dimensional nanosheets. By adjusting the types of solvents used and reaction time, the morphologies of TiO 2/C composites can be tuned to nanoparticles, microrods, rod-in-tube structures, or microtubes. Among these materials, rod-in-tube TiO 2 with a uniform carbon coating shows the highest electronic conductivity, specific surface area (336.4 m 2 g -1), and porosity, and these factors lead to the best sodium storage capability. Benefiting from the unique structural features and improved electronic/ionic conductivity, the as-obtained rod-in-tube TiO 2/C in coin cell tests exhibits a high discharge capacity of 277.5 and 153.9 mAh g -1 at 50 and 5000 mA g -1, respectively, and almost 100% capacity retention over 14,000 cycles at 5000 mA g -1. In operando high-energy X-ray diffraction further confirms the stable crystal structure of the rod-in-tube TiO 2/C during Na + insertion/extraction. Finally, this work highlights that nanostructure design is anmore » effective strategy to achieve advanced energy storage materials.« less

Authors:
 [1];  [1];  [2];  [3];  [4];  [5];  [5];  [1];  [6];  [7]
  1. Central South Univ., Changsha (China). Hunan Provincial Key Lab. of Chemical Power Sources, College of Chemistry and Chemical Engineering
  2. Central South Univ., Changsha (China). Hunan Provincial Key Lab. of Chemical Power Sources, College of Chemistry and Chemical Engineering; Hong Kong Univ. of Science and Technology, Hong Kong (China). Dept. of Chemical and Biological Engineering
  3. Argonne National Lab. (ANL), Argonne, IL (United States). Chemical Sciences and Engineering Division
  4. Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS), X-ray Science Division
  5. Hong Kong Univ. of Science and Technology, Hong Kong (China). Dept. of Chemical and Biological Engineering
  6. Argonne National Lab. (ANL), Argonne, IL (United States). Chemical Sciences and Engineering Division; Stanford Univ., CA (United States). Materials Science and Engineering
  7. Hong Kong Univ. of Science and Technology, Hong Kong (China). Dept. of Chemical and Biological Engineering, and Energy Inst.
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
National Natural Science Foundation of China (NNSFC); USDOE Office of Energy Efficiency and Renewable Energy (EERE), Vehicle Technologies Office (EE-3V)
OSTI Identifier:
1422570
Grant/Contract Number:  
AC02-06CH11357
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Nano Energy
Additional Journal Information:
Journal Volume: 44; Journal Issue: C; Journal ID: ISSN 2211-2855
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE; hierarchical rod-in-tube structure; morphology tuning; rate performance; sodium-ion battery; titanium dioxide

Citation Formats

He, Hanna, Gan, Qingmeng, Wang, Haiyan, Xu, Gui-Liang, Zhang, Xiaoyi, Huang, Dan, Fu, Fang, Tang, Yougen, Amine, Khalil, and Shao, Minhua. Structure-dependent performance of TiO2/C as anode material for Na-ion batteries. United States: N. p., 2017. Web. doi:10.1016/j.nanoen.2017.11.077.
He, Hanna, Gan, Qingmeng, Wang, Haiyan, Xu, Gui-Liang, Zhang, Xiaoyi, Huang, Dan, Fu, Fang, Tang, Yougen, Amine, Khalil, & Shao, Minhua. Structure-dependent performance of TiO2/C as anode material for Na-ion batteries. United States. doi:10.1016/j.nanoen.2017.11.077.
He, Hanna, Gan, Qingmeng, Wang, Haiyan, Xu, Gui-Liang, Zhang, Xiaoyi, Huang, Dan, Fu, Fang, Tang, Yougen, Amine, Khalil, and Shao, Minhua. Wed . "Structure-dependent performance of TiO2/C as anode material for Na-ion batteries". United States. doi:10.1016/j.nanoen.2017.11.077.
@article{osti_1422570,
title = {Structure-dependent performance of TiO2/C as anode material for Na-ion batteries},
author = {He, Hanna and Gan, Qingmeng and Wang, Haiyan and Xu, Gui-Liang and Zhang, Xiaoyi and Huang, Dan and Fu, Fang and Tang, Yougen and Amine, Khalil and Shao, Minhua},
abstractNote = {The performance of energy storage materials is highly dependent on their nanostructures. Herein, hierarchical rod-in-tube TiO2 with a uniform carbon coating is synthesized as the anode material for sodium-ion batteries by a facile solvothermal method. This unique structure consists of a tunable nanorod core, interstitial hollow spaces, and a functional nanotube shell assembled from two-dimensional nanosheets. By adjusting the types of solvents used and reaction time, the morphologies of TiO2/C composites can be tuned to nanoparticles, microrods, rod-in-tube structures, or microtubes. Among these materials, rod-in-tube TiO2 with a uniform carbon coating shows the highest electronic conductivity, specific surface area (336.4 m2 g-1), and porosity, and these factors lead to the best sodium storage capability. Benefiting from the unique structural features and improved electronic/ionic conductivity, the as-obtained rod-in-tube TiO2/C in coin cell tests exhibits a high discharge capacity of 277.5 and 153.9 mAh g-1 at 50 and 5000 mA g-1, respectively, and almost 100% capacity retention over 14,000 cycles at 5000 mA g-1. In operando high-energy X-ray diffraction further confirms the stable crystal structure of the rod-in-tube TiO2/C during Na+ insertion/extraction. Finally, this work highlights that nanostructure design is an effective strategy to achieve advanced energy storage materials.},
doi = {10.1016/j.nanoen.2017.11.077},
journal = {Nano Energy},
number = C,
volume = 44,
place = {United States},
year = {Wed Dec 06 00:00:00 EST 2017},
month = {Wed Dec 06 00:00:00 EST 2017}
}

Journal Article:
Free Publicly Available Full Text
This content will become publicly available on December 6, 2018
Publisher's Version of Record

Save / Share: