期刊
JOURNAL OF MATERIALS CHEMISTRY A
卷 7, 期 38, 页码 21766-21773出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c9ta07357d
关键词
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资金
- National Natural Science Foundation of China (NSFC) [51572011, 21805011, 51902251]
- National Key Research and Development Program of China [2017YFB0102204]
- China Postdoctoral Science Foundation [2017M620637, 2018M643697, 2019T120930]
Two-dimensional transition metal carbides (MXenes) have a unique structure, excellent electronic conductivity and a low Li+ diffusion barrier, and show potential for application in energy storage. Especially, MXenes can act as a conductive matrix to achieve excellent lithium storage performance. Herein, a Ti3C2Tx MXene/carbon nanotubes@red phosphorus (Ti3C2Tx/CNTs@P) nanohybrid with stable Ti-O-P bonds is fabricated. The CNTs are introduced into Ti3C2Tx to construct a conductive network, and then the Ti3C2Tx/CNTs are combined with P by a ball-milling method. In this process, the surface oxygen-containing functional groups of Ti3C2Tx interact with P, forming Ti-O-P bonds. Owing to the large capacity contribution of P, the conductive network and buffering role of Ti3C2Tx/CNTs, and the effect of the Ti-O-P bond, the Ti3C2Tx/CNTs@P nanohybrid exhibits a superior reversible capacity of 2598 mA h g(-1) at 0.05C (1C = 2600 mA g(-1), based on the active material P), excellent cycling stability (2078 mA h g(-1) after 500 cycles) and superior rate capability (454 mA h g(-1) at 30C). These results demonstrate that the Ti3C2Tx/CNTs@P nanohybrid offers fascinating potential for high-performance lithium-ion batteries.
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