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Lu J, Wang Z, Zhang Q, Sun C, Zhou Y, Wang S, Qiu X, Xu S, Chen R, Wei T. The effects of amino groups and open metal sites of MOFs on polymer-based electrolytes for all-solid-state lithium metal batteries. Chin J Chem Eng 2023. [DOI: 10.1016/j.cjche.2023.01.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
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Xu A, Wang R, Yao M, Cao J, Li M, Yang C, Liu F, Ma J. Electrochemical Properties of an Sn-Doped LATP Ceramic Electrolyte and Its Derived Sandwich-Structured Composite Solid Electrolyte. Nanomaterials (Basel) 2022; 12:nano12122082. [PMID: 35745423 PMCID: PMC9228486 DOI: 10.3390/nano12122082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Revised: 06/13/2022] [Accepted: 06/14/2022] [Indexed: 11/16/2022]
Abstract
An Li1.3Al0.3SnxTi1.7−x(PO4)3 (LATP-xSn) ceramic solid electrolyte was prepared by Sn doping via a solid phase method. The results showed that adding an Sn dopant with a larger ionic radius in a concentration of x = 0.35 enabled one to equivalently substitute Ti sites in the LATP crystal structure to the maximum extent. The uniform Sn doping could produce a stable LATP structure with small grain size and improved relative density. The lattice distortion induced by Sn doping also modified the transport channels of Li ions, which promoted the increase of ionic conductivity from 5.05 × 10−5 to 4.71 × 10−4 S/cm at room temperature. The SPE/LATP-0.35Sn/SPE composite solid electrolyte with a sandwich structure was prepared by coating, which had a high ionic conductivity of 5.9 × 10−5 S/cm at room temperature, a wide electrochemical window of 4.66 V vs. Li/Li+, and a good lithium-ion migration number of 0.38. The Li||Li symmetric battery test results revealed that the composite solid electrolyte could stably perform for 500 h at 60 °C under the current density of 0.2 mA/cm2, indicating its good interface stability with metallic lithium. Moreover, the analysis of the all-solid-state LiFePO4||SPE/LATP-0.35Sn/SPE||Li battery showed that the composite solid electrolyte had good cycling stability and rate performance. Under the conditions of 60 °C and 0.2 C, stable accumulation up to 200 cycles was achieved at a capacity retention ratio of 90.5% and a coulombic efficiency of about 100% after cycling test.
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Affiliation(s)
- Aihong Xu
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Guizhou University, Guiyang 550025, China; (A.X.); (R.W.); (M.Y.); (J.C.); (M.L.); (C.Y.)
- Guizhou Key Laboratory for Green Chemical and Clean Energy Technology, Guiyang 550025, China
| | - Ruoming Wang
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Guizhou University, Guiyang 550025, China; (A.X.); (R.W.); (M.Y.); (J.C.); (M.L.); (C.Y.)
- Guizhou Key Laboratory for Green Chemical and Clean Energy Technology, Guiyang 550025, China
| | - Mengqin Yao
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Guizhou University, Guiyang 550025, China; (A.X.); (R.W.); (M.Y.); (J.C.); (M.L.); (C.Y.)
- Guizhou Key Laboratory for Green Chemical and Clean Energy Technology, Guiyang 550025, China
| | - Jianxin Cao
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Guizhou University, Guiyang 550025, China; (A.X.); (R.W.); (M.Y.); (J.C.); (M.L.); (C.Y.)
- Guizhou Key Laboratory for Green Chemical and Clean Energy Technology, Guiyang 550025, China
| | - Mengjun Li
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Guizhou University, Guiyang 550025, China; (A.X.); (R.W.); (M.Y.); (J.C.); (M.L.); (C.Y.)
- Guizhou Key Laboratory for Green Chemical and Clean Energy Technology, Guiyang 550025, China
| | - Chunliang Yang
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Guizhou University, Guiyang 550025, China; (A.X.); (R.W.); (M.Y.); (J.C.); (M.L.); (C.Y.)
- Guizhou Key Laboratory for Green Chemical and Clean Energy Technology, Guiyang 550025, China
| | - Fei Liu
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Guizhou University, Guiyang 550025, China; (A.X.); (R.W.); (M.Y.); (J.C.); (M.L.); (C.Y.)
- Guizhou Key Laboratory for Green Chemical and Clean Energy Technology, Guiyang 550025, China
- Correspondence: (F.L.); (J.M.)
| | - Jun Ma
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Guizhou University, Guiyang 550025, China; (A.X.); (R.W.); (M.Y.); (J.C.); (M.L.); (C.Y.)
- Guizhou Key Laboratory for Green Chemical and Clean Energy Technology, Guiyang 550025, China
- Correspondence: (F.L.); (J.M.)
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