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Title: Two-dimensional wavelike spinel lithium titanate for fast lithium storage
Authors: Liu, Jiehua
Wei, Xiangfeng
Liu, Xue-Wei
Keywords: DRNTU::Science::Physics::Atomic physics::Statistical physics
Issue Date: 2015
Source: Liu, J., Wei, X., & Liu, X.-W. (2015). Two-dimensional wavelike spinel lithium titanate for fast lithium storage. Scientific reports, 5, 9782-.
Series/Report no.: Scientific reports
Abstract: Safe fast-charging lithium-ion batteries (LIBs) have huge potential market size on demand according to their shortened charging time for high-power devices. Zero-strain spinel Li4Ti5O12 is one of ideal candidates for safe high-power batteries owing to its good cycling performance, low cost and safety. However, the inherent insulating characteristic of LTO seriously limits its high-rate capability. In this work, we successfully synthesize novel wavelike spinel LTO nanosheets using a facile ‘co-hydrolysis’ method, which is superior to molten-salt approach and traditional solvothermal method in some respects. The unique 2D structures have single-crystal framework with shortened path for Li ion transport. As a result, the N-doped 2D wavelike LTO with 0.6 wt.% of ‘carbon joint’ not only exhibits exciting capacity of ~180 and ~150 mA h g−1 for fast lithium storage at high discharge/charge rates of 1.7 and 8.5 A g−1 (10C and 50C) respectively, but also shows excellent low-temperature performance at −20°C. In addition, the cost may be further decreased due to recycled functional reagents. This novel nanostructured 2D LTO anode material makes it possible to develop safe fast-charging high-power lithium ion batteries.
ISSN: 2045-2322
DOI: 10.1038/srep09782
Rights: This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder in order to reproduce the material. To view a copy of this license, visit
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:SPMS Journal Articles

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