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https://hdl.handle.net/2440/113453
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Type: | Journal article |
Title: | Ultrathin titanate nanosheets/graphene films derived from confined transformation for excellent Na/K ion storage |
Author: | Zeng, C. Xie, F. Yang, X. Jaroniec, M. Zhang, L. Qiao, S. |
Citation: | Angewandte Chemie International Edition, 2018; 57(28):8540-8544 |
Publisher: | Wiley |
Issue Date: | 2018 |
ISSN: | 1433-7851 1521-3773 |
Statement of Responsibility: | Cheng Zeng, Fangxi Xie, Xianfeng Yang, Mietek Jaroniec, Lei Zhang, and Shi-Zhang Qiao |
Abstract: | Confined transformation of assembled two-dimensional MXene (titanium carbide) and reduced graphene oxide (rGO) nanosheets was employed to prepare the free-standing films of the integrated ultrathin sodium titanate (NTO)/potassium titanate (KTO) nanosheets sandwiched between graphene layers. The ultrathin Ti-based nanosheets reduce the diffusion distance while rGO layers enhance conductivity. Incorporation of graphene into the titanate films produced efficient binder-free anodes for ion storage. The resulting NTO/rGO electrode for sodium ion batteries exhibited an excellent rate performance and long cycling stability characterized by reversible capacity of 72 mA h g-1 at 5 A g-1 after 10000 cycles. Moreover, flexible KTO/rGO electrode for potassium ion batteries maintained a reversible capacity of 75 mA h g-1 after 700 cycles at 2 A g-1. These results demonstrate the superiority of the unique sandwich-type electrodes. |
Keywords: | anode materials sandwich structures sodium titanate sodium-ion batteries ultrathin nanosheets |
Rights: | Copyright 2018 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim |
DOI: | 10.1002/anie.201803511 |
Grant ID: | http://purl.org/au-research/grants/arc/DE150101234 http://purl.org/au-research/grants/arc/FL170100154 |
Published version: | http://dx.doi.org/10.1002/anie.201803511 |
Appears in Collections: | Aurora harvest 8 Chemical Engineering publications |
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