Universität zu Köln

Lu, Yanzhong, Wang, Jinshan, Chen, Yang, Zheng, Xinyu, Yao, Hurong, Mathur, Sanjay and Hong, Zhensheng . Spatially Controlled Lithium Deposition on Silver-Nanocrystals-Decorated TiO2 Nanotube Arrays Enabling Ultrastable Lithium Metal Anode. Adv. Funct. Mater.. WEINHEIM: WILEY-V C H VERLAG GMBH. ISSN 1616-3028

Full text not available from this repository.

Abstract

3D scaffolds and heterogeneous seeds are two effective ways to guide Li deposition and suppress Li dendrite growth. Herein, 3D TiO2 nanotube (TNT) arrays decorated using ultrafine silver nanocrystals (7-10 nm) through cathodic reduction deposition are first demonstrated as a confined space host for lithium metal deposition. First, TiO2 possesses intrinsic lithium affinity with large Li absorption energy, which facilitates Li capture. Then, ultrafine silver nanocrystals decoration allows the uniform and selective nucleation in nanoscale without a nucleation barrier, leading to the extraordinary formation of lithium metal importing into 3D nanotube arrays. As a result, Li metal anode deposited on such a binary architecture (TNT-Ag-Li) delivers a high Coulomb efficiency at around 99.4% even after 300 cycles with a capacity of 2 mA h cm(-2). Remarkably, TNT-Ag-Li exhibits ultralow overpotential of 4 mV and long-term cycling life over 2500 h with a capacity of 2 mAh cm(-2) in Li symmetric cells. Moreover, the full battery with 3D spaced Li nanotubes anode and LiFeO4 cathode exhibits a stable and high capacity of 115 mA h g(-1) at 5 C and an excellent Coulombic efficiency of approximate to 100% over 500 cycles.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Lu, Yanzhong UNSPECIFIED UNSPECIFIED UNSPECIFIED Wang, Jinshan UNSPECIFIED UNSPECIFIED UNSPECIFIED Chen, Yang UNSPECIFIED UNSPECIFIED UNSPECIFIED Zheng, Xinyu UNSPECIFIED UNSPECIFIED UNSPECIFIED Yao, Hurong UNSPECIFIED UNSPECIFIED UNSPECIFIED Mathur, Sanjay UNSPECIFIED UNSPECIFIED UNSPECIFIED Hong, Zhensheng UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-307782
DOI:	10.1002/adfm.202009605
Journal or Publication Title:	Adv. Funct. Mater.
Publisher:	WILEY-V C H VERLAG GMBH
Place of Publication:	WEINHEIM
ISSN:	1616-3028
Language:	English
Faculty:	Faculty of Mathematics and Natural Sciences
Divisions:	Faculty of Mathematics and Natural Sciences > Department of Chemistry > Institute of Inorganic Chemistry
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language ELECTROLYTES; GROWTH; ION Multiple languages Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/30778