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Enhanced ionic conductivity and lack of paddle-wheel effect in pseudohalogen-substituted Li argyrodites

Journal Article · · Matter (Online)
 [1];  [2];  [3];  [4];  [5];  [1];  [3];  [5];  [1]
  1. Univ. of California, Berkeley, CA (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
  2. Univ. of California, Berkeley, CA (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States); Florida State Univ., Tallahassee, FL (United States)
  3. Samsung Advanced Institute of Technology (United States); Samsung Semiconductor, Inc., Cambridge, MA (United States)
  4. Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
  5. Univ. of Nebraska, Lincoln, NE (United States)

Superionic conductors are key to the development of safe and high-energy-density, all-solid-state batteries. Using a combined theoretical and experimental approach, we explore the feasibility of increasing the ionic conductivity through pseudohalogen substitution in the Li argyrodite structure. Under the guidance of calculated thermodynamic stability, BH4-substituted Li argyrodite, Li5.91PS4.91(BH4)1.09, was successfully synthesized via a mechanochemical method. As-synthesized BH4-substituted Li argyrodite displays an ionic conductivity of 4.8 mS/cm at 25°C. Ab initio molecular dynamics simulation trajectory analysis was used to investigate how BH4 facilitates Li-ion diffusion and indicates only a weak correlation with the B–H bond motion. Here, we find that the enhanced conductivity mainly originates from the weak interaction between Li and BH4 and find no evidence of a paddle-wheel effect from the polyanion. This work provides insight into how cluster ions enhance Li diffusion and systematically describes how to explore superionic conductors with pseudohalogen substitution.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). Molecular Foundry
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE Office of Energy Efficiency and Renewable Energy (EERE), Office of Sustainable Transportation. Vehicle Technologies Office (VTO); National Science Foundation (NSF)
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
2246875
Journal Information:
Matter (Online), Journal Name: Matter (Online) Journal Issue: 12 Vol. 5; ISSN 2590-2385
Publisher:
Cell Press/ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

References (48)

Computation‐Guided Synthesis of New Garnet‐Type Solid‐State Electrolytes via an Ultrafast Sintering Technique journal October 2020
Lithium Fast-Ionic Conduction in Complex Hydrides: Review and Prospects journal January 2011
Understanding Li‐Ion Dynamics in Lithium Hydroxychloride (Li 2 OHCl) Solid State Electrolyte via Addressing the Role of Protons journal January 2020
Tailoring the Cation Lattice for Chloride Lithium‐Ion Conductors journal September 2020
Lithium Oxide Superionic Conductors Inspired by Garnet and NASICON Structures journal September 2021
Boosting Solid‐State Diffusivity and Conductivity in Lithium Superionic Argyrodites by Halide Substitution journal May 2019
Fast Lithium Ion Conduction in Garnet-Type Li7La3Zr2O12 journal October 2007
Li6PS5X: A Class of Crystalline Li-Rich Solids With an Unusually High Li+ Mobility journal January 2008
LiBH4 a new hydrogen storage material journal May 2003
Enhanced ion conduction by enforcing structural disorder in Li-deficient argyrodites Li6−xPS5−xCl1+x journal September 2020
Innovative Approaches to Li-Argyrodite Solid Electrolytes for All-Solid-State Lithium Batteries journal May 2021
Dynamics of Hydroxyl Anions Promotes Lithium Ion Conduction in Antiperovskite Li 2 OHCl journal September 2020
Tunable Lithium-Ion Transport in Mixed-Halide Argyrodites Li 6– x PS 5– x ClBr x : An Unusual Compositional Space journal February 2021
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
Computational Prediction and Evaluation of Solid-State Sodium Superionic Conductors Na 7 P 3 X 11 (X = O, S, Se) journal August 2017
Computational Investigation of Halogen-Substituted Na Argyrodites as Solid-State Superionic Conductors journal February 2020
Fast Ion Conduction and Its Origin in Li 6– x PS 5– x Br 1+ x journal April 2020
Wet-Milling Synthesis of Superionic Lithium Argyrodite Electrolytes with Different Concentrations of Lithium Vacancy journal September 2021
Sodium Superionic Conductors Based on Clusters journal December 2018
Solvent-Engineered Design of Argyrodite Li 6 PS 5 X (X = Cl, Br, I) Solid Electrolytes with High Ionic Conductivity journal November 2018
Mechanochemically Prepared Li 2 S–P 2 S 5 –LiBH 4 Solid Electrolytes with an Argyrodite Structure journal May 2018
First Principles Study of the Li10GeP2S12 Lithium Super Ionic Conductor Material journal December 2011
Li−Fe−P−O 2 Phase Diagram from First Principles Calculations journal February 2008
Data Mined Ionic Substitutions for the Discovery of New Compounds journal January 2011
Crystal orbital Hamilton populations (COHP): energy-resolved visualization of chemical bonding in solids based on density-functional calculations journal August 1993
Evidence for a Solid-Electrolyte Inductive Effect in the Superionic Conductor Li 10 Ge 1– x Sn x P 2 S 12 journal December 2020
Fast Ion-Conducting Thioboracite with a Perovskite Topology and Argyrodite-like Lithium Substructure journal April 2021
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
Rotational Cluster Anion Enabling Superionic Conductivity in Sodium-Rich Antiperovskite Na 3 OBH 4 journal March 2019
New Family of Argyrodite Thioantimonate Lithium Superionic Conductors journal October 2019
Coupled Cation–Anion Dynamics Enhances Cation Mobility in Room-Temperature Superionic Solid-State Electrolytes journal November 2019
Crystal Orbital Hamilton Population (COHP) Analysis As Projected from Plane-Wave Basis Sets journal June 2011
Structural Phase Transitions of Mg(BH 4 ) 2 under Pressure journal December 2008
Technology: A solid future journal October 2015
Design principles for solid-state lithium superionic conductors journal August 2015
High magnesium mobility in ternary spinel chalcogenides journal November 2017
Low-temperature paddlewheel effect in glassy solid electrolytes journal March 2020
Phase stability, electrochemical stability and ionic conductivity of the Li 10±1 MP 2 X 12 (M = Ge, Si, Sn, Al or P, and X = O, S or Se) family of superionic conductors journal January 2013
Fast lithium-ionic conduction in a new complex hydride–sulphide crystalline phase journal January 2016
Design of Li 1+2x Zn 1−x PS 4 , a new lithium ion conductor journal January 2016
Structural and Na-ion conduction characteristics of Na 3 PS x Se 4−x journal January 2016
Compatibility issues between electrodes and electrolytes in solid-state batteries journal January 2017
A unified formulation of the constant temperature molecular dynamics methods journal July 1984
Li-rich antiperovskite superionic conductors based on cluster ions journal October 2017
Oxidation energies of transition metal oxides within the GGA + U framework journal May 2006
The thermodynamic scale of inorganic crystalline metastability journal November 2016
Predictive modeling and design rules for solid electrolytes journal October 2018
Thirteen Ways to Look at the Correlation Coefficient journal February 1988

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