Related Experiment Video
Updated: Oct 3, 2025
07:20
Screening of Coatings for an All-Solid-State Battery Using In Situ Transmission Electron Microscopy
Published on: January 20, 2023
2.7K
Facile Method for the Formation of Intimate Interfaces in Sulfide-Based All-Solid-State Batteries
Bin-Na Yun1, Seongsoo Lee1, Wo Dum Jung2
1Energy Storage Research Center, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea.
ACS Applied Materials & Interfaces
|February 14, 2022
Summary
Mild-temperature pressing enhances sulfide solid electrolytes for all-solid-state batteries. This method improves interfacial contact and battery performance, overcoming limitations of cold pressing rigid cathode materials.
Area of Science:
- Materials Science
- Electrochemistry
- Energy Storage
Background:
- Sulfide solid electrolytes offer high ionic conductivity for all-solid-state batteries.
- Their deformability allows cold pressing fabrication, unlike oxide electrolytes requiring high-temperature sintering.
- Current limitations stem from poor interfacial contact between deformable sulfides and rigid oxide cathodes.
Purpose of the Study:
- To develop an improved fabrication method for sulfide-based all-solid-state batteries.
- To enhance interfacial properties within composite electrodes.
- To investigate the impact of interfacial contact on battery performance.
Main Methods:
- A mild-temperature pressing (MP) method at 85 °C was employed.
- Fabrication of all-solid-state batteries using sulfide electrolytes and oxide cathodes.
- Comparison of MP cells with conventional cold-pressed cells.
Main Results:
- Mild temperature (85 °C) increased sulfide deformability and improved interfacial contact in composite cathodes.
- MP cells exhibited superior capacity, cyclability, and rate capability compared to cold-pressed cells.
- Charge-transfer resistance in composite cathodes was identified as a key factor influencing electrochemical performance.
Conclusions:
- The mild-temperature pressing method effectively enhances interfacial contact in sulfide-based all-solid-state batteries.
- Improved interfacial properties lead to significantly better battery performance.
- Optimizing interfacial charge-transfer resistance is crucial for advancing solid-state battery technology.
Related Concept Videos
02:26Preparation and Reactions of Sulfides
5.2K
Sulfides are the sulfur analog of ethers, just as thiols are the sulfur analog of alcohol. Like ethers, sulfides also consist of two hydrocarbon groups bonded to the central sulfur atom. Depending upon the type of groups present, sulfides can be symmetrical or asymmetrical. Symmetrical sulfides can be prepared via an SN2 reaction between 2 equivalents of an alkyl halide and one equivalent of sodium sulfide.
5.2K
03:45Formation of Complex Ions
24.2K
A type of Lewis acid-base chemistry involves the formation of a complex ion (or a coordination complex) comprising a central atom, typically a transition metal cation, surrounded by ions or molecules called ligands. These ligands can be neutral molecules like H2O or NH3, or ions such as CN− or OH−. Often, the ligands act as Lewis bases, donating a pair of electrons to the central atom. These types of Lewis acid-base reactions are examples of a broad subdiscipline called coordination...
24.2K
01:06Interfacial Electrochemical Methods: Overview
493
Interfacial electrochemical methods focus on the phenomena occurring at the boundary between an electrode and a solution, as opposed to bulk methods that concentrate on the solution's overall properties. These interfacial methods are classified as either static or dynamic based on the presence of a nonzero current in the electrochemical cell and the consistency of analyte concentrations. Static methods, such as potentiometry, measure the cell's potential without any significant current...
493