Abstract
Achieving the fast electron transport is an effective strategy to improve the performance of lithium-ion batteries (LIBs). Here, we develop a new method to quickly synthesize rutile TiO2 nanorods grown carbon nanotubes (R-TiO2 NR@CNTs) via a microwave-assisted hydrothermal method in 10 min, in which the R-TiO2 NR@CNTs sample was self-assembled by rutile TiO2 nanorods on the backbone of carbon nanotubes. When the R-TiO2 NR@CNTs was used as the anode for LIBs, it showed an initial discharge capacity of 315 mAh g−1 at 0.3 C which is higher than that of 270 mAh g−1 and 252 mAh g−1 for the physically mixed rutile TiO2 and CNT (R-TiO2/CNTs) and pure rutile TiO2 (R-TiO2) electrodes, respectively. Furthermore, it also showed an excellent cycling performance with capacity retentions of 93 % at 1 C after 200 cycles. The excellent lithium storage performance of R-TiO2 NR@CNTs sample may be contributed by the shortened electrons transfer distance via one-dimensional pathways along the CNTs and TiO2 nanorods. This work reports an effective strategy to quickly synthesize the electroactive materials for LIBs and proposes a fast electrochemical kinetics with shortened electron pathways.
Highlights
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Microwave synthesis of composite materials of rutile TiO2 nanorods grown on carbon nanotubes.
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The composite material exhibits excellent lithium storage performance.
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The rutile nanorods shorten the lithium-ion charge and discharge diffusion path.
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Acknowledgements
This work was supported by the National Key Research and Development Program of China (2020YFA0211004), and National Natural Science Foundation of China (21876112, 21876113, 22022608, 22106105), Shanghai Engineering Research Center of Green Energy Chemical Engineering and Shanghai Government (18SG41), Shanghai Scientific and Technological Innovation Project (20YF1432100, 21DZ1206300), the Program for Professor of Special Appointment (Eastern Scholar) at Shanghai Institutions of Higher Learning.
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All authors contributed to the study conception and design. Material preparation, data collection, and analysis were performed by [LC, SX, SL, HC, QL, and LC, SX, DZ. The first draft of the manuscript was written by LC, SX, HS, ZM, DZ and commented on previous versions of the manuscript. In the process of manuscript revision, YT prepared materials, collected data and analyzed, revised the manuscript, and got the final manuscript. All authors read and approved the final manuscript.
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Chen, L., Tao, Y., Shang, H. et al. Rutile TiO2 nanorods grown on carbon nanotubes as high-performance lithium-ion batteries anode via one-dimensional electron pathways. J Sol-Gel Sci Technol 103, 437–446 (2022). https://doi.org/10.1007/s10971-022-05835-8
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DOI: https://doi.org/10.1007/s10971-022-05835-8