Sol-Gel Synthesis and in Situ X-ray Diffraction Study of Li3Nd3W2O12 as a Lithium Container

Minghe Luo; Haoxiang Yu; Xing Cheng; Wuquan Ye; Haojie Zhu; Tingting Liu; Na Peng; Miao Shui; Jie Shu

doi:10.1021/acsami.8b01329

Sol-Gel Synthesis and in Situ X-ray Diffraction Study of Li₃Nd₃W₂O₁₂ as a Lithium Container

ACS Appl Mater Interfaces. 2018 Apr 18;10(15):12716-12721. doi: 10.1021/acsami.8b01329. Epub 2018 Apr 9.

Authors

Minghe Luo¹, Haoxiang Yu¹, Xing Cheng¹, Wuquan Ye¹, Haojie Zhu¹, Tingting Liu¹, Na Peng¹, Miao Shui¹, Jie Shu¹

Affiliation

¹ Faculty of Materials Science and Chemical Engineering , Ningbo University , No. 818 Fenghua Road , Jiangbei District, Ningbo 315211 , Zhejiang Province , People's Republic of China.

PMID: 29595243
DOI: 10.1021/acsami.8b01329

Abstract

In this work, garnet-framework Li₃Nd₃W₂O₁₂ as a novel insertion-type anode material has been prepared via a facile sol-gel method and examined as a lithium container for lithium ion batteries (LIBs). Li₃Nd₃W₂O₁₂ shows a charge capacity of 225 mA h g^-1 at 50 mA g^-1, and with the current density increasing up to 500 mA g^-1, the charge capacity can still be maintained at 186 mA h g^-1. After cycling at 500 mA g^-1 for 500 cycles, Li₃Nd₃W₂O₁₂ retains about 85% of its first charge capacity changed from 190.2 to 161 mA h g^-1. Furthermore, in situ X-ray diffraction technique is adopted for the understanding of the insertion/extraction mechanism of Li₃Nd₃W₂O₁₂. The full-cell configuration LiFePO₄/Li₃Nd₃W₂O₁₂ is also assembled to evaluate the potential of Li₃Nd₃W₂O₁₂ for practical application. These results show that Li₃Nd₃W₂O₁₂ is such a promising anode material for LIBs with excellent electrochemical performance and stable structure.

Keywords: Li3Nd3W2O12; garnet; in situ XRD; lithium ion batteries; sol−gel.