Please use this identifier to cite or link to this item:
http://hdl.handle.net/10397/89294
Title: | Rate-independent and ultra-stable lowerature sodium storage in pseudocapacitive TiO₂ nanowires | Authors: | Lin, D Li, K Wang, Q Lyu, L Li, B Zhou, L |
Issue Date: | 7-Sep-2019 | Source: | Journal of materials chemistry A, 7 Sept. 2019, v. 7, no. 33, p. 19297-19304 | Abstract: | Sodium-ion batteries (SIBs) are faced with several challenges, including low capacity, short cycle life, and poor lowerature performance. In this work, TiO2-B/anatase dual-phase nanowires are synthesized and applied as SIB anodes to address the above challenges. For the first time, we find the excellent Na-storage performance of the nanowire anode like rate-independent capacities and ultra-stable cycling stability at low temperature. Operando Raman spectroscopy shows that the nanowires are completely amorphized after cycling at 303 K; however, the TiO2-B phase of the dual-phase nanowires remains crystalline after cycling at 273 K. The different sodiation mechanisms at different temperatures result in a lower capacity but a more stable structure during cycling at 273 K than at 303 K. Kinetic analysis shows that the nanowire anode possesses an ultralow charge-transfer energy barrier and resistance with a higher apparent Na diffusion coefficient at 273 K than at 303 K during desodiation, which significantly enhances the Na+ intercalation pseudocapacitive process at low temperature. The synergy between the structural transition and diffusion kinetics leads to rate-independent and ultra-stable Na-storage performance at low temperature. This work provides new perspectives for the understanding and design of lowerature SIBs with high rate capability and long cycle life. | Publisher: | Royal Society of Chemistry | Journal: | Journal of materials chemistry A | ISSN: | 2050-7488 | EISSN: | 2050-7496 | DOI: | 10.1039/c9ta05039f | Rights: | This journal is © The Royal Society of Chemistry 2019 The following publication Lin, D., Li, K., Wang, Q., Lyu, L., Li, B., & Zhou, L. (2019). Rate-independent and ultra-stable low-temperature sodium storage in pseudocapacitive TiO 2 nanowires. Journal of Materials Chemistry A, 7(33), 19297-19304 is available at https://doi.org/10.1039/C9TA05039F |
Appears in Collections: | Journal/Magazine Article |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
a0593_n03_A3_Manuscript JMCA.pdf | Pre-Published version | 791.76 kB | Adobe PDF | View/Open |
Page views
58
Last Week
0
0
Last month
Citations as of Sep 24, 2023
Downloads
17
Citations as of Sep 24, 2023
SCOPUSTM
Citations
18
Citations as of Sep 28, 2023
WEB OF SCIENCETM
Citations
16
Citations as of Sep 28, 2023

Google ScholarTM
Check
Altmetric
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.