Related Experiment Video
Updated: Aug 8, 2026
10:42
Combining Solid-state and Solution-based Techniques: Synthesis and Reactivity of Chalcogenidoplumbates(II or IV)
Published on: December 29, 2016
Halide solid-state electrolytes: structures, properties, anodic interfacial challenges and modification strategies
Tianxiao He1, Yingying Zhang2, Kecheng Pan3
1Key Laboratory of Superlight Materials and Surface Technology (Ministry of Education), College of Material Science and Chemical Engineering, Harbin Engineering University Harbin 150001 China caodianxue@hrbeu.edu.cn kzhu@hrbeu.edu.cn.
Chemical Science
|August 7, 2026
Summary
This review explores halide solid-state electrolytes (SSEs) for all-solid-state lithium batteries (ASSLBs). It details interface degradation mechanisms and interface engineering strategies for improved performance.
Area of Science:
- Materials Science
- Electrochemistry
- Solid-state Chemistry
Background:
- All-solid-state lithium batteries (ASSLBs) are pursued for high energy density and safety.
- Halide solid-state electrolytes (SSEs) offer promising properties like high-voltage stability and ionic conductivity.
- Interfacial degradation at the lithium metal anode (LMA)/SSE interface hinders practical application.
Purpose of the Study:
- To provide a comprehensive overview of halide SSEs.
- To analyze degradation mechanisms at the LMA/SSE interface.
- To review interface engineering strategies for ASSLBs.
Main Methods:
- Summarizing crystal structure, ion conduction, and properties of halide SSEs.
- Examining chemical, electrochemical, and mechanical degradation processes at the interface.
- Reviewing interface engineering strategies: LMA modification, dual-electrolyte architectures, and electrolyte crystal structure engineering.
Main Results:
- Halide SSEs exhibit balanced advantages but face interfacial challenges.
- Interfacial instability arises from complex degradation pathways.
- Interface engineering strategies show potential for enhancing LMA/SSE compatibility.
Conclusions:
- Understanding LMA/SSE interfacial dynamics is crucial for ASSLB development.
- Advanced interface engineering is key to overcoming degradation issues.
- Further research is needed to fully realize the potential of halide SSEs in ASSLBs.
Related Concept Videos
02:42Ionic Crystal Structures
Ionic crystals consist of two or more different kinds of ions that usually have different sizes. The packing of these ions into a crystal structure is more complex than the packing of metal atoms that are the same size.
Most monatomic ions behave as charged spheres, and their attraction for ions of opposite charge is the same in every direction. Consequently, stable structures for ionic compounds result (1) when ions of one charge are surrounded by as many ions as possible of the opposite...
Most monatomic ions behave as charged spheres, and their attraction for ions of opposite charge is the same in every direction. Consequently, stable structures for ionic compounds result (1) when ions of one charge are surrounded by as many ions as possible of the opposite...
03:00Electrolysis
In a galvanic cell, the electrical work is done by a redox system on its surroundings as electrons produced by the spontaneous redox reactions are transferred through an external circuit. Alternatively, an external circuit does work on a redox system by imposing a voltage sufficient to drive an otherwise nonspontaneous reaction in a process known as electrolysis. For instance, recharging a battery involves the use of an external power source to drive the spontaneous (discharge) cell reaction in...
01:30The Electrical Double Layer
In the region where two bulk phases meet, an intricate electric charge distribution arises due to charge transfer, ion adsorption, molecular orientation, and charge distortion. This complex distribution is commonly referred to as the electrical double layer.When a solid electrode interfaces with ions in an electrolyte solution, the speed of electron transfer dictates the rates of oxidation and reduction. The electrode acquires a charge through the escape of atoms into the solution as cations or...
02:48Ionic Bonding and Electron Transfer
Ions are atoms or molecules bearing an electrical charge. A cation (a positive ion) forms when a neutral atom loses one or more electrons from its valence shell, and an anion (a negative ion) forms when a neutral atom gains one or more electrons in its valence shell. Compounds composed of ions are called ionic compounds (or salts), and their constituent ions are held together by ionic bonds: electrostatic forces of attraction between oppositely charged cations and anions.
01:26Imperfections in Crystal Structure: Stoichiometric Point Defects
Schottky defects arise when some lattice points in a crystal, such as those in NaCl, remain unoccupied, creating lattice vacancies without disturbing the overall electrical neutrality of the crystal. This defect is common in ionic crystals where the positive and negative ions are similar in size, as seen in sodium chloride and cesium chloride. The presence of Schottky defects enables the crystal to conduct electricity to a small extent through an ionic mechanism. Electric fields cause nearby...
01:24Types of Reversible Electrodes
For electrode reversibility to be maintained, all the reactants and products involved in the half-reaction must be present at the electrode. There are several types of reversible electrodes (half-cells).In metal-metal-ion electrodes, a metal balances electrochemically with a solution of its own ions. Examples are Cu2+|Cu and Zn2+|Zn. Metals that react with the solvent, like group 1 and most group 2 metals, which react with water, and zinc, which reacts with aqueous acidic solutions, cannot be...