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New Family of Argyrodite Thioantimonate Lithium Superionic Conductors

Journal Article · · Journal of the American Chemical Society
DOI:https://doi.org/10.1021/jacs.9b08357· OSTI ID:1606830
 [1];  [1];  [2];  [3];  [1]
  1. Univ. of Waterloo, ON (Canada)
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Neutron Scattering Division
  3. BASF SE, Ludwigshafen (Germany)
We report on a new family of argyrodite lithium superionic conductors, as solid solutions Li6+xMxSb1–xS5I (M = Si, Ge, Sn), that exhibit superionic conductivity. These represent the first antimony argyrodites to date. Exploration of the series using a combination of single crystal X-ray and synchrotron/neutron powder diffraction, combined with impedance spectroscopy, reveals that an optimal degree of substitution (x), and substituent induces slight S2–/I anion site disorder—but more importantly drives Li+ cation site disorder. The additional, delocalized Li-ion density is located in new high energy lattice sites that provide intermediate interstitial positions (local minima) for Li+ diffusion and activate concerted ion migration, leading to a low activation energy of 0.25 eV. Excellent room temperature ionic conductivity of 14.8 mS·cm–1 is exhibited for cold-pressed pellets—up to 24 mS·cm–1 for sintered pellets—among the highest values reported to date. This enables all-solid-state battery prototypes that exhibit promising properties. Furthermore, even at -78 °C, suitable bulk ionic conductivity of the electrolyte is retained (0.25 mS·cm–1). Selected thioantimonate iodides demonstrate good compatibility with Li metal, sustaining over 1000 h of Li stripping/plating at current densities up to 0.6 mA·cm–2. The significantly enhanced Li ion conduction and lowered activation energy barrier with increasing site disorder reveals an important strategy toward the development of superionic conductors.
Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1606830
Journal Information:
Journal of the American Chemical Society, Journal Name: Journal of the American Chemical Society Journal Issue: 48 Vol. 141; ISSN 0002-7863
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English

References (62)

Crystal Structural Framework of Lithium Super‐Ionic Conductors journal October 2019
Li6PS5X: A Class of Crystalline Li-Rich Solids With an Unusually High Li+ Mobility journal January 2008
Salt-Based Organic-Inorganic Nanocomposites: Towards A Stable Lithium Metal/Li 10 GeP 2 S 12 Solid Electrolyte Interface journal September 2018
Construction of All-Solid-State Batteries based on a Sulfur-Graphene Composite and Li 9.54 Si 1.74 P 1.44 S 11.7 Cl 0.3 Solid Electrolyte journal August 2017
Variation in structure and Li+-ion migration in argyrodite-type Li6PS5X (X = Cl, Br, I) solid electrolytes journal October 2011
Study of the 2Cu2S + GeSe2 ↔ 2Cu2Se + GeS2 reciprocal system and thermodynamic properties of the Cu8GeS6−xSex solid solutions journal January 2017
An In Vivo Formed Solid Electrolyte Surface Layer Enables Stable Plating of Li Metal journal December 2017
Lithium-Metal Growth Kinetics on LLZO Garnet-Type Solid Electrolytes journal August 2019
Interfacial reactivity and interphase growth of argyrodite solid electrolytes at lithium metal electrodes journal May 2018
Direct Observation of the Interfacial Instability of the Fast Ionic Conductor Li 10 GeP 2 S 12 at the Lithium Metal Anode journal March 2016
Diffusion Mechanism of Li Argyrodite Solid Electrolytes for Li-Ion Batteries and Prediction of Optimized Halogen Doping: The Effect of Li Vacancies, Halogens, and Halogen Disorder journal October 2016
Superionic Conductors: Li 10+δ [Sn y Si 1– y ] 1+δ P 2−δ S 12 with a Li 10 GeP 2 S 12 -type Structure in the Li 3 PS 4 –Li 4 SnS 4 –Li 4 SiS 4 Quasi-ternary System journal July 2017
Structural, Chemical, and Dynamical Frustration: Origins of Superionic Conductivity in closo -Borate Solid Electrolytes journal October 2017
Designing Ionic Conductors: The Interplay between Structural Phenomena and Interfaces in Thiophosphate-Based Solid-State Batteries journal May 2018
An Entropically Stabilized Fast-Ion Conductor: Li 3.25 [Si 0.25 P 0.75 ]S 4 journal September 2019
Visualization of the Interfacial Decomposition of Composite Cathodes in Argyrodite-Based All-Solid-State Batteries Using Time-of-Flight Secondary-Ion Mass Spectrometry journal April 2019
Further Evidence for Energy Landscape Flattening in the Superionic Argyrodites Li 6+ x P 1– x M x S 5 I (M = Si, Ge, Sn) journal June 2019
Inorganic Solid-State Electrolytes for Lithium Batteries: Mechanisms and Properties Governing Ion Conduction journal December 2015
All-Solid-State Batteries with Thick Electrode Configurations journal January 2018
In Situ STEM-EELS Observation of Nanoscale Interfacial Phenomena in All-Solid-State Batteries journal May 2016
Interfacial Processes and Influence of Composite Cathode Microstructure Controlling the Performance of All-Solid-State Lithium Batteries journal May 2017
Interface Re-Engineering of Li 10 GeP 2 S 12 Electrolyte and Lithium anode for All-Solid-State Lithium Batteries with Ultralong Cycle Life journal January 2018
Facile Synthesis toward the Optimal Structure-Conductivity Characteristics of the Argyrodite Li 6 PS 5 Cl Solid-State Electrolyte journal September 2018
Solvent-Engineered Design of Argyrodite Li 6 PS 5 X (X = Cl, Br, I) Solid Electrolytes with High Ionic Conductivity journal November 2018
Peeking across Grain Boundaries in a Solid-State Ionic Conductor journal April 2019
The Li-Ion Rechargeable Battery: A Perspective journal January 2013
Anomalous High Ionic Conductivity of Nanoporous β-Li3PS4 journal January 2013
Li 10 SnP 2 S 12 : An Affordable Lithium Superionic Conductor journal October 2013
An Iodide-Based Li 7 P 2 S 8 I Superionic Conductor journal January 2015
Structural and Mechanistic Insights into Fast Lithium-Ion Conduction in Li 4 SiO 4 –Li 3 PO 4 Solid Electrolytes journal July 2015
Li 2 OHCl Crystalline Electrolyte for Stable Metallic Lithium Anodes journal January 2016
Unravelling Li-Ion Transport from Picoseconds to Seconds: Bulk versus Interfaces in an Argyrodite Li 6 PS 5 Cl–Li 2 S All-Solid-State Li-Ion Battery journal August 2016
Transition from Superlithiophobicity to Superlithiophilicity of Garnet Solid-State Electrolyte journal September 2016
Is Geometric Frustration-Induced Disorder a Recipe for High Ionic Conductivity? journal April 2017
Single-Ion Li + , Na + , and Mg 2+ Solid Electrolytes Supported by a Mesoporous Anionic Cu–Azolate Metal–Organic Framework journal September 2017
Influence of Lattice Polarizability on the Ionic Conductivity in the Lithium Superionic Argyrodites Li 6 PS 5 X (X = Cl, Br, I) journal July 2017
Interfacial Chemistry in Solid-State Batteries: Formation of Interphase and Its Consequences journal December 2017
Atomic-Scale Influence of Grain Boundaries on Li-Ion Conduction in Solid Electrolytes for All-Solid-State Batteries journal December 2017
Dendrite-Free Li-Metal Battery Enabled by a Thin Asymmetric Solid Electrolyte with Engineered Layers journal December 2017
Garnet Electrolyte with an Ultralow Interfacial Resistance for Li-Metal Batteries journal April 2018
Inducing High Ionic Conductivity in the Lithium Superionic Argyrodites Li 6+ x P 1– x Ge x S 5 I for All-Solid-State Batteries journal October 2018
High Li + and Mg 2+ Conductivity in a Cu-Azolate Metal–Organic Framework journal February 2019
Crystalline Lithium Imidazolate Covalent Organic Frameworks with High Li-Ion Conductivity journal April 2019
Engineering Janus Interfaces of Ceramic Electrolyte via Distinct Functional Polymers for Stable High-Voltage Li-Metal Batteries journal May 2019
Interface Limited Lithium Transport in Solid-State Batteries journal December 2013
Lithium battery chemistries enabled by solid-state electrolytes journal February 2017
Origin of fast ion diffusion in super-ionic conductors journal June 2017
A solid future for battery development journal September 2016
High-power all-solid-state batteries using sulfide superionic conductors journal March 2016
A lithium superionic conductor journal July 2011
Design principles for solid-state lithium superionic conductors journal August 2015
Advanced sulfide solid electrolyte by core-shell structural design journal October 2018
Critical stripping current leads to dendrite formation on plating in lithium anode solid electrolyte cells journal July 2019
A sulphide lithium super ion conductor is superior to liquid ion conductors for use in rechargeable batteries journal January 2014
Chemo-mechanical expansion of lithium electrode materials – on the route to mechanically optimized all-solid-state batteries journal January 2018
New horizons for inorganic solid state ion conductors journal January 2018
A bird's-eye view of Li-stuffed garnet-type Li 7 La 3 Zr 2 O 12 ceramic electrolytes for advanced all-solid-state Li batteries journal January 2019
Tetragonal Li10GeP2S12 and Li7GePS8 – exploring the Li ion dynamics in LGPS Li electrolytes journal January 2013
Elastic and Li-ion–percolating hybrid membrane stabilizes Li metal plating journal November 2018
GSAS-II : the genesis of a modern open-source all purpose crystallography software package journal March 2013
A profile refinement method for nuclear and magnetic structures journal June 1969
SoftBV – a software tool for screening the materials genome of inorganic fast ion conductors journal January 2019

Cited By (3)

Fast Lithium Ion Conduction in Lithium Phosphidoaluminates journal January 2020
Fast Lithium Ion Conduction in Lithium Phosphidoaluminates journal January 2020
Ionic conduction mechanism of a lithium superionic argyrodite in the Li–Al–Si–S–O system journal January 2020


Figures / Tables (12)


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