Unique mesoporous spinel Li4Ti5O12 nanosheets as anode materials for lithium-ion batteries

Content Provider	Semantic Scholar
Author	Chen, Li Yuan, Wei Zhang, Yuchuan Osgood, Hannah Matera, Daniel Song, Xi-Ming Wu, Gang
Copyright Year	2015
Abstract	Abstract Spinel Li 4 Ti 5 O 12 (LTO) has been intensively investigated as promising anode materials for lithium-ion batteries (LIBs) due to its remarkable structural stability and excellent safety. In this paper, unique LTO nanosheets with porous microstructure are successfully prepared for the first time by a facile approach without any additives and template under hydrothermal conditions following calcination. Particularly, compared with traditional LTO microspheres and smooth LTO nanosheets, the newly prepared mesoporous LTO nanosheets demonstrate extra surface lithium storage reaction and much improved electrochemical performances, delivering ultrahigh reversible capacity of 169 mAh g −1 at 1C and superior rate performance of more than 140 mAh g −1 at 30C between 1.0 and 2.5 V vs. Li + /Li. The beneficial surface lithium storage is mainly attributed to its advanced microstructure, which can facilitate the transfer of lithium-ions and electrons. The exceptionally improved electrochemical performance of the mesoporous LTO nanosheets will undoubtedly make this microstructure attractive for high performance electrode materials of LIBs.
Starting Page	436
Ending Page	441
Page Count	6
File Format	PDF HTM / HTML
DOI	10.1016/j.jpowsour.2015.08.038
Alternate Webpage(s)	http://www.cbe.buffalo.edu/people/pdfPub.jsp?id=4161
Alternate Webpage(s)	https://doi.org/10.1016/j.jpowsour.2015.08.038
Volume Number	297
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article