期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 794, 期 -, 页码 585-593出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2019.04.248
关键词
Mesoporous material; NASICON; Ionic conductivity; Sol-gel
资金
- Natural Science Foundation of Hebei Province
- Fundamental Research Funds for the Central Universities [2017MS138, 2015ZZD3]
- Scientific Research Foundation for the Returned Overseas Chinese Scholars, State Education Ministry
In this study, we demonstrate that the introduction of the SBA-15 mesoporous material improves the ionic conductivity of lithium aluminum titanium phosphate (LATP) electrolytes. SBA-15-doped LATP was prepared by both the conventional solid-state and sol-gel methods. The experimental results show that this introduction of SBA-15 can refine the grains of LATP and improve its ionic conductivity despite the decrease in the measured density upon doping. The doped LATP shows the highest ionic conductivity (4.42 x 10(-4)Scm(-1)) and the lowest activation energy (0.24eV) at 3 wt% SBA-15. The improvement in the ionic conductivity is attributed to the presence of an amorphous layer due to the mesoporous nature of the material. (C) 2019 Elsevier B.V. All rights reserved.
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