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Title: Enhanced ionic conductivity with Li7O2Br3 phase in Li3OBr anti-perovskite solid electrolyte

Journal Article · · Applied Physics Letters
DOI:https://doi.org/10.1063/1.4962437· OSTI ID:1331273
 [1];  [1];  [1];  [1];  [2];  [3];  [1]; ORCiD logo [1];  [1];  [4]
  1. Univ. of Nevada, Las Vegas, NV (United States)
  2. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  3. Univ. of Texas at Austin, Austin, TX (United States)
  4. Univ. of Nevada, Las Vegas, NV (United States); South Univ. of Science and Technology of China, Guangdong (China)

Here, cubic anti-perovskites with general formula Li3OX (X = Cl, Br, I) were recently reported as superionic conductors with the potential for use as solid electrolytes in all-solid-state lithium ion batteries. These electrolytes are nonflammable, low-cost and suitable for thermoplastic processing. However, the primary obstacle of its practical implementation is the relatively low ionic conductivity at room temperature. In this work, we synthesized a composite material consisting of two anti-perovskite phases, namely cubic Li3OBr and layered Li7O2Br3, by solid state reaction routes. The results indicate that with the phase fraction of Li7O2Br3 increasing to 44 wt %, the ionic conductivity increased by more than one order of magnitude compared with pure phase Li3OBr. Formation energy calculations revealed the meta-stable nature of Li7O2Br3, which supports the great difficulty in producing phase-pure Li7O2Br3 at ambient pressure. Methods of obtaining phase-pure Li7O2Br3 will continue to be explored, including both high pressure and metathesis techniques.

Research Organization:
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States); Univ. of Nevada, Las Vegas, NV (United States)
Sponsoring Organization:
USDOE Advanced Research Projects Agency - Energy (ARPA-E)
Grant/Contract Number:
AC52-06NA25396; NA0001982; 0670-3052
OSTI ID:
1331273
Alternate ID(s):
OSTI ID: 1332396; OSTI ID: 1420460
Report Number(s):
LA-UR-16-21222; APPLAB
Journal Information:
Applied Physics Letters, Vol. 109, Issue 10; ISSN 0003-6951
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 32 works
Citation information provided by
Web of Science

References (32)

Fast Na+-ion transport in skeleton structures journal February 1976
Challenges for Rechargeable Li Batteries journal February 2010
Issues and challenges facing rechargeable lithium batteries journal November 2001
Recent developments in lithium ion batteries journal June 2001
Structural manipulation approaches towards enhanced sodium ionic conductivity in Na-rich antiperovskites journal October 2015
Challenges in the development of advanced Li-ion batteries: a review journal January 2011
A lithium superionic conductor journal July 2011
Ionic conductivities, sintering temperatures and microstructures of bulk ceramic CeO2 doped with Y2O3 journal October 2000
Reaction mechanism studies towards effective fabrication of lithium-rich anti-perovskites Li3OX (X= Cl, Br) journal January 2016
On the Conductivity Mechanism of Nanocrystalline Ceria journal January 2002
Grain Boundary Blocking Effect in Zirconia: A Schottky Barrier Analysis journal January 2001
Building better batteries journal February 2008
Experimental visualization of lithium conduction pathways in garnet-type Li7La3Zr2O12 journal January 2012
Issue and challenges facing rechargeable thin film lithium batteries journal August 2008
Phase Stability and Transport Mechanisms in Antiperovskite Li 3 OCl and Li 3 OBr Superionic Conductors journal November 2013
First principles methods using CASTEP journal January 2005
The A-C Conductivity of Polycrystalline LISICON, Li[sub 2+2x]Zn[sub 1−x]GeO[sub 4], and a Model for Intergranular Constriction Resistances journal January 1983
Structure of Na3OCl journal May 1990
Ab initio study of the stabilities of and mechanism of superionic transport in lithium-rich antiperovskites journal April 2013
A review of recent developments in membrane separators for rechargeable lithium-ion batteries journal January 2014
Lithium metal anodes for rechargeable batteries journal January 2014
A review of advanced and practical lithium battery materials journal January 2011
The Li-Ion Rechargeable Battery: A Perspective journal January 2013
Blocking Grain Boundaries in Yttria-Doped and Undoped Ceria Ceramics of High Purity journal January 2003
Li-rich anti-perovskite Li 3 OCl films with enhanced ionic conductivity journal January 2014
Electrolytes for solid-state lithium rechargeable batteries: recent advances and perspectives journal January 2011
Anomalous High Ionic Conductivity of Nanoporous β-Li3PS4 journal January 2013
Crystal structure and ionic conductivity of Li14Zn(GeO4)4 and other new Li+ superionic conductors journal February 1978
Fast Lithium Ion Conduction in Garnet-Type Li7La3Zr2O12 journal October 2007
Superionic Conductivity in Lithium-Rich Anti-Perovskites journal August 2012
On the Conductivity Mechanism of Nanocrystalline Ceria. journal January 2003
Fast Lithium Ion Conduction in Garnet-Type Li7La3Zr2O12. journal December 2007

Cited By (4)

Promises, Challenges, and Recent Progress of Inorganic Solid-State Electrolytes for All-Solid-State Lithium Batteries journal February 2018
Ion Conductivity Enhancement in Anti-Spinel Li 3 OBr with Intrinsic Vacancies journal November 2018
Correlating lattice distortions, ion migration barriers, and stability in solid electrolytes journal January 2019
Insights into Grain Boundary in Lithium-Rich Anti-Perovskite as Solid Electrolytes journal January 2018