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Kim J, Mok DH, Kim H, Back S. Accelerating the Search for New Solid Electrolytes: Exploring Vast Chemical Space with Machine Learning-Enabled Computational Calculations. ACS Appl Mater Interfaces 2023. [PMID: 37924286 DOI: 10.1021/acsami.3c10798] [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] [Subscribe] [Scholar Register] [Indexed: 11/06/2023]
Abstract
Discovering new solid electrolytes (SEs) is essential to achieving higher safety and better energy density for all-solid-state lithium batteries. In this work, we report machine learning (ML)-assisted high-throughput virtual screening (HTVS) results to identify new SE materials. This approach expands the chemical space to explore by substituting elements of prototype structures and accelerates an evaluation of properties by applying various ML models. The screening results in a few candidate materials, which are validated by density functional theory calculations and ab initio molecular dynamics simulations. The shortlisted oxysulfide materials satisfy key properties to be successful SEs. The advanced screening method presented in this work will accelerate the discovery of energy materials for related applications.
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Affiliation(s)
- Jongseung Kim
- Department of Chemical and Biomolecular Engineering, Institute of Emergent Materials, Sogang University, Seoul 04107, Republic of Korea
| | - Dong Hyeon Mok
- Department of Chemical and Biomolecular Engineering, Institute of Emergent Materials, Sogang University, Seoul 04107, Republic of Korea
| | - Heejin Kim
- Division of Analytical Science, Korea Basic Science Institute (KBSI), Yuseong-gu, Daejeon 34133, Republic of Korea
| | - Seoin Back
- Department of Chemical and Biomolecular Engineering, Institute of Emergent Materials, Sogang University, Seoul 04107, Republic of Korea
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Hamao N, Yamaguchi Y, Hamamoto K. Densification of a NASICON-Type LATP Electrolyte Sheet by a Cold-Sintering Process. Materials (Basel) 2021; 14:4737. [PMID: 34443259 DOI: 10.3390/ma14164737] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Revised: 08/17/2021] [Accepted: 08/18/2021] [Indexed: 11/25/2022]
Abstract
A NASICON-type Li1.3Al0.3Ti1.7(PO4)3 (LATP) electrolyte sheet for all-solid-state batteries was fabricated by a cold sintering process (CSP). The microstructure of the LATP sheet was controlled to improve the wettability which is an essential factor in CSP. The porous sheets of LATP were prepared by calcination the green sheets to remove the organic components and form the porous structure. By the CSP using the porous sheets, the densification of grain boundary was observed and further densified with increasing reaction time. The total conductivity of the prepared LATP sheet was improved from 3.0 × 10−6 S/cm to 3.0 × 10−4 S/cm due to the formation of necks between the particles at the grain boundary.
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Huang B, Xu B, Li Y, Zhou W, You Y, Zhong S, Wang CA, Goodenough JB. Li-Ion Conduction and Stability of Perovskite Li3/8Sr7/16Hf1/4Ta3/4O3. ACS Appl Mater Interfaces 2016; 8:14552-14557. [PMID: 27215282 DOI: 10.1021/acsami.6b03070] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
A solid Li-ion conductor with a high room temperature Li-ion conductivity and small interfacial resistance is required for its application in next-generation Li-ion batteries. Here, we prepared a cubic perovskite-related oxide with the general formula Li3/8Sr7/16Hf1/4Ta3/4O3 (LSHT) by a conventional solid-state reaction method, which was studied by X-ray diffraction, electrochemical impedance spectroscopy, and (7)Li MAS NMR. Li3/8Sr7/16Hf1/4Ta3/4O3 has a high Li-ion conductivity of 3.8 × 10(-4) S cm(-1) at 25 °C and a low activation energy of 0.36 eV in the temperature range 298-430 K. It exhibits both high stability and small interfacial resistance with commercial organic liquid electrolytes, which makes it promising as a separator in Li-ion batteries.
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Affiliation(s)
- Bing Huang
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University , Beijing 100084, P.R. China
- School of Material Science and Engineering, Jiangxi University of Science and Technology , Ganzhou 341000, Jiangxi, P.R. China
| | - Biyi Xu
- State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University , Shanghai 200240, P.R. China
| | - Yutao Li
- Materials Research Program and the Texas Materials Institute, ETC9.184, University of Texas at Austin , Austin, Texas 78712, United States
| | - Weidong Zhou
- Materials Research Program and the Texas Materials Institute, ETC9.184, University of Texas at Austin , Austin, Texas 78712, United States
| | - Ya You
- Materials Research Program and the Texas Materials Institute, ETC9.184, University of Texas at Austin , Austin, Texas 78712, United States
| | - Shengwen Zhong
- School of Material Science and Engineering, Jiangxi University of Science and Technology , Ganzhou 341000, Jiangxi, P.R. China
- Materials Research Program and the Texas Materials Institute, ETC9.184, University of Texas at Austin , Austin, Texas 78712, United States
| | - Chang-An Wang
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University , Beijing 100084, P.R. China
| | - John B Goodenough
- Materials Research Program and the Texas Materials Institute, ETC9.184, University of Texas at Austin , Austin, Texas 78712, United States
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