Journal
ELECTROCHIMICA ACTA
Volume 200, Issue -, Pages 21-28Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2016.03.110
Keywords
sodium-ion batteries; titanate; nanowires; bronze
Categories
Funding
- KIST Institutional Program [2E26330]
- Ministry of Science, ICT & Future Planning, Republic of Korea [2E26330] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Ask authors/readers for more resources
We report the electrochemical behaviors of TiO2-B nanowire electrodes exhibiting a high operating potential where they can avoid severe Na plating and a de-sodiation capacity of 196 mAh g(-1), which is the highest among several types of titanium oxides reported for sodium ion batteries. When TiO2-B nanowires are used as negative electrodes for sodium ion batteries, 1 mole of the TiO2-B nanowire can take up approximately 1 mole of sodium ions during the sodiation process and reversibly relieve 0.6 mole of intercalated sodium during the subsequent de-sodiation process. It has been proved that TiO2-B nanowire electrodes participate in a reversible single-phase Na insertion/desertion reaction during charge and discharge. The electrodes exhibit irreversible capacity, owing to electrolyte decomposition and residual irreversible Na insertion, as determined via in situ XRD, ICP, FE-SEM, XPS, and electrochemical analyses. Further, TiO2-B is a superior material exhibiting long and stable cyclability with a specific capacity of 150 mAh g(-1) over 50 cycles. (C) 2016 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available