Construction of Core-shell TiNb2O7/Li4Ti5O12 Composites with Improved Lithium Storage for Lithium-Ion Batteries

doi:10.1016/j.est.2023.109860

機構典藏 > College of Engineering > Graduate Institute & Department of Chemical and Materials Engineering > Journal Article > Item 987654321/125569

Please use this identifier to cite or link to this item: https://tkuir.lib.tku.edu.tw/dspace/handle/987654321/125569

Title:	Construction of Core-shell TiNb2O7/Li4Ti5O12 Composites with Improved Lithium Storage for Lithium-Ion Batteries
Authors:	Yu-Sheng Hsiao, Lin-Yang Weng, Ta-Hung Cheng, Tzu-Yen Huang, Yen-Ju Wu, Jen-Hsien Huang, Nian-Jheng Wu
Date:	2023-12-14
Issue Date:	2024-07-24 12:05:20 (UTC+8)
Publisher:	Elsevier
Abstract:	In this study, the (TiNb2O7) TNO and modified (Li4Ti5O12) LTO composites with the core–shell (CS) structures have been designed and prepared by the spry-dried method. In the structural composite, the modified LTO core can stabilize the dimensional stability with excellent rate capability, and the TNO shell can offer a larger capacity, leading to high-performance anode materials. Our results indicate that the CS composites without the TNO nanoparticles (NPs) aggregation reveal a more negligible electrochemical polarization (EP) with improved kinetics than traditional composites. The optimal TNO content in the CS composite is 30 wt%, which can show a larger capacity than that of bare LTO, with the C-rate ranging between 17.5 and 3500 mA g−1. It delivers a capacity of 164.9 mA h g−1 at 1050 mA g−1, higher than bare LTO (157.6 mA h g−1) and traditional composite (154.6 mA h g−1). Furthermore, the full lithium-ion battery (LIB) is fabricated using the CS composite as the anode and LiNi0.5Mn1.5O4 (LNMO) as the cathode. The designed LIB shows an improved energy density of 122.0 W h kg−1 with remarkable cycling stability.
Relation:	Journal of Energy Storage 77, 109860
DOI:	10.1016/j.est.2023.109860
Appears in Collections:	[Graduate Institute & Department of Chemical and Materials Engineering] Journal Article

Files in This Item:

File	Description	Size	Format
index.html		0Kb	HTML	80	View/Open

Loading...