A stable cathode-solid electrolyte composite for high-voltage, long-cycle-life solid-state sodium-ion batteries
Journal Article
·
· Nature Communications
- Univ. of California San Diego, La Jolla, CA (United States)
- Univ. of California, Santa Barbara, CA (United States)
- Stony Brook Univ., NY (United States)
- Shell International Exploration & Production Inc., Houston, TX (United States)
- Shell Global Solutions International BV, The Hague (Netherlands)
- Univ. of California San Diego, La Jolla, CA (United States); TCG Centres for Research and Education in Science and Technology (TCG CREST), Kolkata (India)
Rechargeable solid-state sodium-ion batteries (SSSBs) hold great promise for safer and more energy-dense energy storage. However, the poor electrochemical stability between current sulfide-based solid electrolytes and high-voltage oxide cathodes has limited their long-term cycling performance and practicality. Here, we report the discovery of the ion conductor Na3-xY1-xZrxCl6 (NYZC) that is both electrochemically stable (up to 3.8 V vs. Na/Na+) and chemically compatible with oxide cathodes. Its high ionic conductivity of 6.6 × 10–5 S cm–1 at ambient temperature, several orders of magnitude higher than oxide coatings, is attributed to abundant Na vacancies and cooperative MCl6 rotation, resulting in an extremely low interfacial impedance. A SSSB comprising a NaCrO2 + NYZC composite cathode, Na3PS4 electrolyte, and Na-Sn anode exhibits an exceptional first-cycle Coulombic efficiency of 97.1% at room emperature and can cycle over 1000 cycles with 89.3% capacity retention at 40 °C. These findings highlight the immense potential of halides for SSSB applications.
- Research Organization:
- Brookhaven National Laboratory (BNL), Upton, NY (United States)
- Sponsoring Organization:
- National Science Foundation; USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities Division
- Grant/Contract Number:
- SC0012704
- OSTI ID:
- 1783756
- Report Number(s):
- BNL-221438-2021-JACI
- Journal Information:
- Nature Communications, Journal Name: Nature Communications Journal Issue: 1 Vol. 12; ISSN 2041-1723
- Publisher:
- Nature Publishing GroupCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Similar Records
Materials design of sodium chloride solid electrolytes Na3MCl6 for all-solid-state sodium-ion batteries
Tailored Organic Electrode Material Compatible with Sulfide Electrolyte for Stable All‐Solid‐State Sodium Batteries
Tailored Organic Electrode Material Compatible with Sulfide Electrolyte for Stable All‐Solid‐State Sodium Batteries
Journal Article
·
Wed Sep 15 20:00:00 EDT 2021
· Journal of Materials Chemistry. A
·
OSTI ID:1844069
Tailored Organic Electrode Material Compatible with Sulfide Electrolyte for Stable All‐Solid‐State Sodium Batteries
Journal Article
·
Wed Feb 07 19:00:00 EST 2018
· Angewandte Chemie
·
OSTI ID:1419899
Tailored Organic Electrode Material Compatible with Sulfide Electrolyte for Stable All‐Solid‐State Sodium Batteries
Journal Article
·
Wed Feb 07 19:00:00 EST 2018
· Angewandte Chemie (International Edition)
·
OSTI ID:1419900