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Title: Cold sintering process of Li 1.5 Al 0.5 Ge 1.5 (PO 4 ) 3 solid electrolyte

Authors:
ORCiD logo [1]; ORCiD logo [1];  [1];  [2];  [1]
  1. Center for Dielectrics & Piezoelectrics, Materials Research Institute, The Pennsylvania State University, University Park Pennsylvania, Department of Materials Science & Engineering, The Pennsylvania State University, University Park Pennsylvania
  2. Center for Dielectrics & Piezoelectrics, Materials Research Institute, The Pennsylvania State University, University Park Pennsylvania, Department of Materials Science & Engineering, The Pennsylvania State University, University Park Pennsylvania, Department of Engineering Science & Mechanics Millennium Science Complex, The Pennsylvania State University, University Park Pennsylvania
Publication Date:
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Vehicle Technologies Office (EE-3V)
OSTI Identifier:
1401766
Grant/Contract Number:
FOA-0000442
Resource Type:
Journal Article: Publisher's Accepted Manuscript
Journal Name:
Journal of the American Ceramic Society
Additional Journal Information:
Journal Volume: 100; Journal Issue: 5; Related Information: CHORUS Timestamp: 2017-10-20 17:52:45; Journal ID: ISSN 0002-7820
Publisher:
Wiley-Blackwell
Country of Publication:
United States
Language:
English

Citation Formats

Berbano, Seth S., Guo, Jing, Guo, Hanzheng, Lanagan, Michael T., and Randall, Clive A. Cold sintering process of Li 1.5 Al 0.5 Ge 1.5 (PO 4 ) 3 solid electrolyte. United States: N. p., 2017. Web. doi:10.1111/jace.14727.
Berbano, Seth S., Guo, Jing, Guo, Hanzheng, Lanagan, Michael T., & Randall, Clive A. Cold sintering process of Li 1.5 Al 0.5 Ge 1.5 (PO 4 ) 3 solid electrolyte. United States. doi:10.1111/jace.14727.
Berbano, Seth S., Guo, Jing, Guo, Hanzheng, Lanagan, Michael T., and Randall, Clive A. Sat . "Cold sintering process of Li 1.5 Al 0.5 Ge 1.5 (PO 4 ) 3 solid electrolyte". United States. doi:10.1111/jace.14727.
@article{osti_1401766,
title = {Cold sintering process of Li 1.5 Al 0.5 Ge 1.5 (PO 4 ) 3 solid electrolyte},
author = {Berbano, Seth S. and Guo, Jing and Guo, Hanzheng and Lanagan, Michael T. and Randall, Clive A.},
abstractNote = {},
doi = {10.1111/jace.14727},
journal = {Journal of the American Ceramic Society},
number = 5,
volume = 100,
place = {United States},
year = {Sat Mar 04 00:00:00 EST 2017},
month = {Sat Mar 04 00:00:00 EST 2017}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at 10.1111/jace.14727

Citation Metrics:
Cited by: 6works
Citation information provided by
Web of Science

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  • Series of Li{sub 1.5}Al{sub 0.5}Ge{sub 1.5}(PO{sub 4}){sub 3} glass ceramic samples were prepared in this work through the change of heat treatment temperature from 650 to 1050 °C. The structures of glass ceramic samples were characterized by means of high temperature X-ray diffraction and Field Emission Scanning Electron Microscope. And the lithium ionic conductivity was analyzed through AC impedance spectroscopy. Through heat treatment at 850 °C for 4 h for the base glass sample, we obtained a maximum conductivity of 5.8 × 10{sup −4} S/cm at room temperature. - Graphical Abstract: High temperature X-ray diffraction (HT-XRD) and Rietveld refinement ofmore » Li{sub 1.5}Al{sub 0.5}Ge{sub 1.5}(PO{sub 4}){sub 3} (LAGP) glass-ceramics were recorded to investigate the phase transformation, cell parameters and the mass fraction of each crystal phase, which occur in the glass to glass-ceramics process during different crystallization temperatures. The relationship between the average grain size and conductivity that originate from and relate to the crystallization temperature was analyzed by SEM micrograph and AC impedance spectroscopy. - Highlights: • Li{sub 1.5}Al{sub 0.5}Ge{sub 1.5}(PO{sub 4}){sub 3} glass-ceramics were prepared from as-prepared glass. • The phases decomposition and mass fraction of each phase were analyzed by HT-XRD. • Conductivity is relate to grain size that influenced by crystallization temperature.« less
  • Adoption of cells with a solid-state electrolyte is a promising solution for eliminating the polysulfide shuttle problem in Li-S batteries. Among the various known lithium-ion conducting solid electrolytes, the sodium superionic conductor (NASICON)-type Li 1+xTi 2-xAl x(PO 4) 3 offers the advantage of good stability under ambient conditions and in contact with air. Accordingly, we present here a comprehensive assessment of the durability of Li 1+xTi 2-xAl x(PO 4) 3 in contact with polysulfide solution and in Li-S cells. Because of its high reduction potential (2.5 V vs Li/Li +), Li 1+xTi 2-xAl x(PO 4) 3 gets lithiated in contactmore » with lithium polysulfide solution and Li 2CO 3 is formed on the particle surface, blocking the interfacial lithium-ion transport between the liquid and solid-state electrolytes. After the lithium insertion into the NASICON framework, the crystal expands in an anisotropic way, weakening the crystal bonds, causing fissures and resultant cracks in the ceramic, corroding the grain boundaries by polysulfide solution, and leaving unfavorable pores. The assembly of pores creates a gateway for polysulfide diffusion from the cathode side to the anode side, causing an abrupt decline in cell performance. Therefore, the solid-state electrolytes need to have good chemical compatibility with both the electrode and electrolyte, long-term stability under harsh chemical environment, and highly stable grain boundaries.« less
  • Adoption of cells with a solid-state electrolyte is a promising solution for eliminating the polysulfide shuttle problem in Li-S batteries. Among the various known lithium-ion conducting solid electrolytes, the sodium superionic conductor (NASICON)-type Li 1+xTi 2-xAl x(PO 4) 3 offers the advantage of good stability under ambient conditions and in contact with air. Accordingly, we present here a comprehensive assessment of the durability of Li 1+xTi 2-xAl x(PO 4) 3 in contact with polysulfide solution and in Li-S cells. Because of its high reduction potential (2.5 V vs Li/Li +), Li 1+xTi 2-xAl x(PO 4) 3 gets lithiated in contactmore » with lithium polysulfide solution and Li 2CO 3 is formed on the particle surface, blocking the interfacial lithium-ion transport between the liquid and solid-state electrolytes. After the lithium insertion into the NASICON framework, the crystal expands in an anisotropic way, weakening the crystal bonds, causing fissures and resultant cracks in the ceramic, corroding the grain boundaries by polysulfide solution, and leaving unfavorable pores. The assembly of pores creates a gateway for polysulfide diffusion from the cathode side to the anode side, causing an abrupt decline in cell performance. Therefore, the solid-state electrolytes need to have good chemical compatibility with both the electrode and electrolyte, long-term stability under harsh chemical environment, and highly stable grain boundaries.« less
  • New complex phosphates of the general formula K{sub 2} M {sub 0.5}Ti{sub 1.5}(PO{sub 4}){sub 3} (M=Mn, Co) have been obtained from the melting mixture of KPO{sub 3}, K{sub 4}P{sub 2}O{sub 7}, TiO{sub 2} and CoCO{sub 3}.mCo(OH){sub 2} or Mn(H{sub 2}PO{sub 4}){sub 2} by means of a flux technique. The synthesized phosphates have been characterized by the single-crystal X-ray diffraction and the FTIR-spectroscopy. The compounds crystallize in the cubic system with the space group P2{sub 1}3 and cell parameters a=9.9030(14) A for K{sub 2}Mn{sub 0.5}Ti{sub 1.5}(PO{sub 4}){sub 3} and a=9.8445(12) A for K{sub 2}Co{sub 0.5}Ti{sub 1.5}(PO{sub 4}){sub 3}. Both phosphates aremore » isostructural with the langbeinite mineral and contain four formula unit K{sub 2} M {sub 0.5}Ti{sub 1.5}(PO{sub 4}){sub 3} per unit cell. The structure can be described using [M {sub 2}(PO{sub 4}){sub 3}] framework composed of two [MO{sub 6}] octahedra interlinked via three [PO{sub 4}] tetrahedra. The Curie-Weiss-type behavior is observed in the magnetic susceptibility. -- Graphical abstract: A view of langbeinite structure in direction perpendicular to [111].« less
  • A solid-state electrochemical cell of the type Pt/LiCoO{sub 2}-5 mole percent (m/o) Co{sub 3}O{sub 4}/Li{sub 2}CO{sub 3} (+5 m/o Li{sub 3}PO{sub 4} + 6 m/o LiAlO{sub 2})/Au, CO{sub 2}, O{sub 2}, was composed for determining CO{sub 2} concentration, where Li{sub 2}CO{sub 3}, a lithium ion conductor, is an electrolyte, and LiCoO{sub 2}-Co{sub 3}O{sub 4} is used as the solid reference electrode. Electromotive force (EMF) of the cell depended logarithmically on the CO{sub 2} partial pressure in CO{sub 2}/O{sub 2} gas mixtures at temperatures between 350 and 400 C. EMF reached a constant value within 1 min after the change ofmore » CO{sub 2} partial pressure at 400 C. The sensitivity to CO{sub 2} of this cell was not affected by coexistence of water vapor. The sensor worked stably during a test period of 30 days. The sensing mechanism of CO{sub 2} was discussed together with an explanation to the stability of this sensor.« less