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Updated: Jun 5, 2026
07:20
Screening of Coatings for an All-Solid-State Battery Using In Situ Transmission Electron Microscopy
Published on: January 20, 2023
Synergistic Regulation of Interfacial Potential and Anionic Covalency for High-Voltage Cobalt-Free All-Solid-State
Yue Wang1, Shuibin Tu1, Long Qian1
1School of Chemical Engineering, Adelaide University, Adelaide, SA, Australia.
Angewandte Chemie (International Ed. in English)
|June 4, 2026
Summary
High-voltage cobalt-free all-solid-state lithium batteries (ASSLBs) show promise for sustainable energy. A novel interface strategy using BaTiO3 and sulfate bonds enhances performance by stabilizing the electrode-electrolyte interface, boosting capacity and durability.
Area of Science:
- Materials Science
- Electrochemistry
- Energy Storage
Background:
- High-voltage cobalt-free all-solid-state lithium batteries (ASSLBs) offer high energy density but face interfacial failure.
- Kinetic bottlenecks at the space-charge layer (SCL) and oxygen instability hinder practical application.
Purpose of the Study:
- To decouple interfacial constraints in 5V-class LiNi0.5Mn1.5O4 (LNMO) ASSLBs.
- To enhance the stability and performance of LNMO-based ASSLBs.
Main Methods:
- Synergistic regulation of interfacial potential and anion covalency.
- Coating LNMO with high-dielectric BaTiO3 (BTO) to manage interfacial potential.
- Stabilizing interfacial lattice oxygen using sulfate-derived S─O covalent bonds.
Main Results:
- Suppressed space-charge layer (SCL) formation and stabilized interfacial lattice oxygen.
- Achieved a notable increase in reversible capacity (52 to 116 mAh g⁻¹ at 0.1 C).
- Demonstrated high-rate capability (up to 3 C) and long-term durability (at 1 C).
Conclusions:
- Coupling dielectric regulation (BTO) and anion chemistry stabilization (sulfate) is a viable strategy for high-voltage ASSLBs.
- This approach unlocks the potential of LNMO-based ASSLBs for advanced energy storage.
- Establishes a new paradigm for designing stable interfaces in high-voltage batteries.
Keywords:
LiNi0.5Mn1.5O4 cathodecobalt‐freehigh‐voltage all‐solid‐state batteriesinterfacial oxygen chemistryspace charge layerMore Related Videos
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