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Title: Stabilizing Superionic-Conducting Structures via Mixed-Anion Solid Solutions of Monocarba- closo -borate Salts

Journal Article · · ACS Energy Letters
 [1];  [2];  [3];  [3];  [3];  [3];  [4];  [5];  [6];  [7]
  1. NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland 20899-6102, United States, Department of Materials Science and Engineering, University of Maryland, College Park, Maryland 20742-2115, United States
  2. Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan
  3. Institute of Metal Physics, Ural Branch of the Russian Academy of Sciences, Ekaterinburg 620990, Russia
  4. NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland 20899-6102, United States, National Renewable Energy Laboratory, Golden, Colorado 80401, United States
  5. Energy Nanomaterials, Sandia National Laboratories, Livermore, California 94551, United States
  6. Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan, WPI-Advanced Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan
  7. NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland 20899-6102, United States
+ Show Author Affiliations

Solid lithium and sodium closo-polyborate-based salts are capable of superionic conductivities surpassing even liquid electrolytes, but often only at above-ambient temperatures where their entropically driven disordered phases become stabilized. Here we show by X-ray diffraction, quasielastic neutron scattering, differential scanning calorimetry, NMR, and AC impedance measurements that by introducing 'geometric frustration' via the mixing of two different closo-polyborate anions, namely, 1-CB9H10- and CB11H12-, to form solid-solution anion-alloy salts of lithium or sodium, we can successfully suppress the formation of possible ordered phases in favor of disordered, fast-ion-conducting alloy phases over a broad temperature range from subambient to high temperatures. Finally, this result exemplifies an important advancement for further improving on the remarkable conductive properties generally displayed by this class of materials and represents a practical strategy for creating tailored, ambient-temperature, solid, superionic conductors for a variety of upcoming all-solid-state energy devices of the future.

Research Organization:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Sustainable Transportation Office. Hydrogen Fuel Cell Technologies Office; National Science Foundation (NSF)
Grant/Contract Number:
AC36-08GO28308; AC04-94AL85000; DMR-0944772; 25220911; 15-03- 01114; 26820311
OSTI ID:
1315853
Alternate ID(s):
OSTI ID: 1345722
Report Number(s):
NREL/JA-5900-68062
Journal Information:
ACS Energy Letters, Journal Name: ACS Energy Letters Vol. 1 Journal Issue: 4; ISSN 2380-8195
Publisher:
American Chemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 107 works
Citation information provided by
Web of Science

Cited By (13)

Rhodium( iii )-catalyzed dehydrogenative dialkenylation of the monocarba- closo -decaborate cluster by regioselective B–H activation journal January 2018
A 3D Analogue of Phenyllithium: Solution-Phase, Solid-State, and Computational Study of the Lithiacarborane [Li−CB 11 H 11 ] − journal November 2019
Borohydride-Scaffolded Li/Na/Mg Fast Ionic Conductors for Promising Solid-State Electrolytes journal October 2018
Complex Hydrides for Energy Storage, Conversion, and Utilization journal July 2019
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
Fast Sodium-Ion Conductivity in Supertetrahedral Phosphidosilicates journal May 2018
A 3D Analogue of Phenyllithium: Solution‐Phase, Solid‐State, and Computational Study of the Lithiacarborane [Li−CB 11 H 11 ] − journal November 2019
Direct Solution‐Based Synthesis of Na 4 (B 12 H 12 )(B 10 H 10 ) Solid Electrolyte journal October 2019
Ab initio simulations of liquid electrolytes for energy conversion and storage journal October 2018
The renaissance of hydrides as energy materials journal December 2016
A complex hydride lithium superionic conductor for high-energy-density all-solid-state lithium metal batteries journal March 2019
Ammonia-assisted fast Li-ion conductivity in a new hemiammine lithium borohydride, LiBH 4 ·1/2NH 3 journal January 2020
Lightweight complex metal hydrides for Li-, Na-, and Mg-based batteries journal March 2019

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Related Subjects

36 MATERIALS SCIENCE
superionic conductivities
anions
ordered phases
disorder