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Title: Unparalleled lithium and sodium superionic conduction in solid electrolytes with large monovalent cage-like anions

Journal Article · · Energy & Environmental Science
DOI:https://doi.org/10.1039/c5ee02941d· OSTI ID:1327910
 [1];  [2];  [3];  [4];  [2];  [3];  [2];  [3]
  1. National Institute of Standards and Technology, Gaithersburg, MD (United States); Univ. of Maryland, College Park, MD (United States)
  2. Tohoku Univ., Sendai (Japan)
  3. National Institute of Standards and Technology, Gaithersburg, MD (United States)
  4. Sandia National Lab. (SNL-CA), Livermore, CA (United States)

Solid electrolytes with sufficiently high conductivities and stabilities are the elusive answer to the inherent shortcomings of organic liquid electrolytes prevalent in today's rechargeable batteries. We recently revealed a novel fast-ion-conducting sodium salt, Na2B12H12, which contains large, icosahedral, divalent B12H122– anions that enable impressive superionic conductivity, albeit only above its 529 K phase transition. Its lithium congener, Li2B12H12, possesses an even more technologically prohibitive transition temperature above 600 K. Here we show that the chemically related LiCB11H12 and NaCB11H12 salts, which contain icosahedral, monovalent CB11H12– anions, both exhibit much lower transition temperatures near 400 K and 380 K, respectively, and truly stellar ionic conductivities (>0.1 S cm–1) unmatched by any other known polycrystalline materials at these temperatures. Furthermore with proper modifications, we are confident that room-temperature-stabilized superionic salts incorporating such large polyhedral anion building blocks are attainable, thus enhancing their future prospects as practical electrolyte materials in next-generation, all-solid-state batteries.

Research Organization:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Sustainable Transportation Office. Hydrogen Fuel Cell Technologies Office (HFTO)
Grant/Contract Number:
AC04-94AL85000
OSTI ID:
1327910
Report Number(s):
SAND-2016-9600J; EESNBY; 647755
Journal Information:
Energy & Environmental Science, Vol. 8, Issue 12; ISSN 1754-5692
Publisher:
Royal Society of ChemistryCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 204 works
Citation information provided by
Web of Science

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Cited By (28)

Dynamics of porous and amorphous magnesium borohydride to understand solid state Mg-ion-conductors journal June 2020
Liquid‐Like Ionic Conduction in Solid Lithium and Sodium Monocarba‐ closo ‐Decaborates Near or at Room Temperature journal February 2016
Solid-State Sodium Batteries journal February 2018
A complex hydride lithium superionic conductor for high-energy-density all-solid-state lithium metal batteries journal March 2019
Chemistry Design Towards a Stable Sulfide‐Based Superionic Conductor Li 4 Cu 8 Ge 3 S 12 journal April 2019
Combining proton and silaborane-based superhalogen anions – an effective route to new superacids as verified via systematic DFT calculations journal January 2019
Fundamentals of inorganic solid-state electrolytes for batteries journal August 2019
Lightweight complex metal hydrides for Li-, Na-, and Mg-based batteries journal March 2019
Low-temperature paddlewheel effect in glassy solid electrolytes journal March 2020
Carbon Incorporation and Anion Dynamics as Synergistic Drivers for Ultrafast Diffusion in Superionic LiCB 11 H 12 and NaCB 11 H 12 journal February 2018
Complex Metal Hydrides for Hydrogen, Thermal and Electrochemical Energy Storage journal October 2017
Borohydride-Scaffolded Li/Na/Mg Fast Ionic Conductors for Promising Solid-State Electrolytes journal October 2018
A 3D Analogue of Phenyllithium: Solution‐Phase, Solid‐State, and Computational Study of the Lithiacarborane [Li−CB 11 H 11 ] journal November 2019
Ultra stable superatomic structure of doubly magic Ga 13 and Ga 13 Li electrolyte journal January 2020
Machine Learning Enabled Computational Screening of Inorganic Solid Electrolytes for Suppression of Dendrite Formation in Lithium Metal Anodes journal August 2018
The renaissance of hydrides as energy materials journal December 2016
Reorientational motion and Li + -ion transport in Li 2 B 12 H 12 system: Molecular dynamics study journal July 2019
Multifunctionality of silver closo-boranes journal April 2017
Sur-/interfacial regulation in all-solid-state rechargeable Li-ion batteries based on inorganic solid-state electrolytes: advances and perspectives journal January 2019
Chemistry Design Towards a Stable Sulfide-Based Superionic Conductor Li 4 Cu 8 Ge 3 S 12 journal April 2019
Sodium-Ion Battery Electrolytes: Modeling and Simulations journal February 2018
Magnesium‐Based Clusters as Building Blocks of Electrolytes in Lithium‐Ion Batteries journal July 2019
Building Better Batteries in the Solid State: A Review journal November 2019
A 3D Analogue of Phenyllithium: Solution-Phase, Solid-State, and Computational Study of the Lithiacarborane [Li−CB 11 H 11 ] − journal November 2019
Complex Hydrides for Energy Storage, Conversion, and Utilization journal July 2019
Dynamics of porous and amorphous magnesium borohydride to understand solid state Mg-ion-conductors text January 2020
Vacancies in functional materials for clean energy storage and harvesting: the perfect imperfection journal January 2017
Interatomic potential construction with self-learning and adaptive database journal October 2017


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