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Luo C, Shuai Q, Zhao G, Zhang M, Wu B, Fu X, Sun Y, Wang Y, Hua Q. Insights into the Effects of Co-Regulated Factors on Li 1.3Al 0.3Ti 1.7(PO 4) 3 Solid Electrolyte Preparation: Sources, Calcination Temperatures, and Sintering Temperatures. ACS APPLIED MATERIALS & INTERFACES 2023; 15:48110-48121. [PMID: 37796023 DOI: 10.1021/acsami.3c09236] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/06/2023]
Abstract
The ionic conductivity, phase components, and microstructures of LATP depend on its synthesis process. However, their relative importance and their interactions with synthesis process parameters (such as source materials, calcination temperature, and sintering temperature) remain unclear. In this work, different source materials were used to prepare LATP via the solid-state reaction method under different calcination and sintering temperatures, and an analysis via orthogonal experiments and machine learning was used to systematically study the effects of the process parameters. Sintering temperatures had the greatest effect on the total ionic conductivity of LATP pellets, followed by the sources and calcination temperatures. Sources, as the foundational factors, directly determine the composition of a major secondary phase of LATP pellets, which influences the whole process. The calcination temperature had limited impact on the ion conductivity of LATP pellets if pellets were sintered under the optimal temperature. The sintering temperature is the most important factor that influences the ion conductivity by eliminating most secondary phases and altering the microstructure of LATP, including the intergranular contact, grain size, relative densities, etc. This work offers a novel perspective to comprehend the synthesis of solid-state electrolytes beyond LATP.
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Affiliation(s)
- Changwei Luo
- Key Laboratory of Beam Technology of Ministry of Education, College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875, China
- Key Laboratory of Beam Technology of Ministry of Education, Center of Ion Beam Technology & Energy Materials, Beijing Normal University, Beijing 100875, China
- Yueqing Solid-State Battery Research Institute, Wenzhou 325600, China
| | - Qilin Shuai
- Key Laboratory of Beam Technology of Ministry of Education, College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875, China
- Key Laboratory of Beam Technology of Ministry of Education, Center of Ion Beam Technology & Energy Materials, Beijing Normal University, Beijing 100875, China
| | - Guoqiang Zhao
- Key Laboratory of Beam Technology of Ministry of Education, College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875, China
- Key Laboratory of Beam Technology of Ministry of Education, Center of Ion Beam Technology & Energy Materials, Beijing Normal University, Beijing 100875, China
- Yueqing Solid-State Battery Research Institute, Wenzhou 325600, China
| | - Mengyang Zhang
- Yueqing Solid-State Battery Research Institute, Wenzhou 325600, China
| | - Bin Wu
- Yueqing Solid-State Battery Research Institute, Wenzhou 325600, China
| | - Xiaolan Fu
- Yueqing Solid-State Battery Research Institute, Wenzhou 325600, China
| | - Yujian Sun
- Yueqing Solid-State Battery Research Institute, Wenzhou 325600, China
| | - Yian Wang
- School of Life Science, Jinggangshan University, Ji'an 343009, Jiangxi, China
| | - Qingsong Hua
- Key Laboratory of Beam Technology of Ministry of Education, College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875, China
- Key Laboratory of Beam Technology of Ministry of Education, Center of Ion Beam Technology & Energy Materials, Beijing Normal University, Beijing 100875, China
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