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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 0.1 and 20 C. It
delivers a capacity of 164.9 mA h g-1 at 6 C, 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.

権利情報:

• Creative Commons BY-NC-ND Attribution-NonCommercial-NoDerivs 4.0 International
  

キーワード: composites, anode, nanoparticle, lithium-ion battery

刊行年月日: 2023-12-14

出版者: Elsevier BV

掲載誌:

• Journal of Energy Storage (ISSN: 23521538) vol. 77 issue. 30 109860

研究助成金:

原稿種別: 著者最終稿 (Accepted manuscript)

MDR DOI: https://doi.org/10.48505/nims.4437

公開URL: https://doi.org/10.1016/j.est.2023.109860

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更新時刻: 2025-12-14 08:30:03 +0900

MDRでの公開時刻: 2025-12-14 08:22:48 +0900