The rapid development of solid-state batteries (SSBs) is accelerating the transition toward safer, higher-energy-density energy storage technologies for electric vehicles (EVs), consumer electronics, and grid energy storage systems.

Compared with conventional lithium-ion batteries using liquid electrolytes, solid-state batteries replace flammable liquid electrolytes with solid electrolyte materials, offering potential advantages including:

• Higher energy density
• Improved thermal safety
• Wider electrochemical stability window
• Potential compatibility with lithium metal anodes
• Reduced risk of electrolyte leakage

Successful solid-state battery development depends on the precise selection of high-purity battery materials, electrolyte precursors, lithium salts, solvents, and laboratory consumables.

J&K Scientific provides a comprehensive portfolio of solid-state battery research materials and chemicals to support battery researchers, universities, national laboratories, and industrial R&D teams from material synthesis to cell evaluation.

1. Solid-State Battery Technology Routes and Material Systems

Solid-state batteries are mainly classified into three major technology routes:

Each technology route requires different material systems and synthesis strategies.

2. Core Materials Used in Solid-State Batteries

A complete solid-state battery system generally consists of:

2.1 Sulfide Solid Electrolytes

The solid electrolyte is the core component that replaces the traditional liquid electrolyte and enables lithium-ion transport between electrodes.

Main electrolyte families include:

Lithium Sulfide (Li₂S)

CAS No.: 12136-58-6

Lithium sulfide is one of the most important precursors for sulfide solid electrolyte synthesis, especially for materials such as:

• Li₆PS₅Cl
• Li₁₀GeP₂S₁₂ (LGPS)

Applications:

• Sulfide electrolyte preparation
• Lithium-ion conductive material synthesis

Phosphorus Pentasulfide (P₂S₅)

CAS No.: 1314-80-3

Phosphorus pentasulfide is widely used with lithium sulfide to prepare lithium thiophosphate-based solid electrolytes.

Applications:

• Li₂S–P₂S₅ glass electrolytes
• Sulfide electrolyte precursor synthesis

Lithium Chloride (LiCl)

CAS No.: 7447-41-8

Lithium chloride is commonly introduced into sulfide electrolyte systems to improve ionic conductivity and stabilize crystal structures.

Applications:

• Li₆PS₅Cl argyrodite electrolyte synthesis
• Chloride-containing solid electrolytes

2.2 Oxide Solid Electrolyte Materials

Oxide electrolytes are known for excellent chemical stability and compatibility with atmospheric conditions.

Representative materials include:

Lanthanum Oxide (La₂O₃)

CAS No.: 1312-81-8

Applications:

• Garnet-type electrolyte synthesis
• Ceramic electrolyte preparation

Zirconium Dioxide (ZrO₂)

CAS No.: 1314-23-4

Applications:

• Stabilized zirconia electrolyte materials
• Ceramic electrolyte modification

Oxide electrolyte systems commonly include:

• LLZO (Li₇La₃Zr₂O₁₂)
• LATP (Li₁₊ₓAlₓTi₂₋ₓ(PO₄)₃)
• NASICON-type materials

2.3 Polymer Electrolyte Materials

Polymer solid electrolytes provide advantages in:

• Mechanical flexibility
• Large-area processing
• Interface compatibility

Common polymer matrices include:

Polyethylene Oxide (PEO)

CAS No.: 25322-68-3

Applications:

• Polymer electrolyte preparation
• Lithium salt polymer systems

 

3. Lithium Salts for Solid-State Battery Electrolytes

Lithium salts provide lithium-ion conductivity in polymer and composite electrolyte systems.

Lithium Bis(trifluoromethanesulfonyl)imide (LiTFSI)

CAS No.: 90076-65-6

LiTFSI is one of the most widely used lithium salts in polymer solid electrolytes due to:

• High ionic conductivity
• Excellent thermal stability
• Good electrochemical stability

Applications:

• PEO-based polymer electrolytes
• Gel polymer electrolytes
• Composite solid electrolytes

Lithium Bis(fluorosulfonyl)imide (LiFSI)

CAS No.: 171611-11-3

LiFSI is attracting increasing attention because of:

• High ionic conductivity
• Improved interface stability
• Compatibility with advanced lithium battery systems

Applications:

• Next-generation lithium batteries
• Solid electrolyte development

Lithium Tetrafluoroborate (LiBF₄)

CAS No.: 14283-07-9

Applications:

• Electrolyte formulation research
• Lithium battery material evaluation

 

4. Solvents for Solid-State Battery Research

Although solid-state batteries minimize liquid electrolyte usage, solvents remain important during:

• Slurry preparation
• Electrode fabrication
• Polymer electrolyte processing
• Material cleaning

N-Methyl-2-pyrrolidone (NMP)

CAS No.: 872-50-4

Applications:

• Electrode slurry preparation
• Binder dissolution

Acetonitrile (ACN)

CAS No.: 75-05-8

Applications:

• Electrolyte preparation
• Laboratory processing solvent

Isopropanol (IPA)

CAS No.: 67-63-0

Applications:

• Material cleaning
• Surface treatment

Ethanol

CAS No.: 64-17-5

Applications:

• Solvent processing
• Laboratory cleaning

 

5. Solid-State Battery Laboratory Research Supplies

Beyond chemical materials, battery research requires specialized laboratory consumables and accessories.

Material Preparation

Common requirements:

• High-purity chemical reagents
• Dry solvents
• Moisture-controlled containers
• Powder processing equipment

Cell Assembly

Typical laboratory supplies include:

• Coin cell cases
• Battery spacers
• Separator films
• Current collectors
• Sealing accessories

Electrochemical Testing

Used for:

• Ionic conductivity measurement
• Cycling performance evaluation
• Interface resistance analysis

Characterization

Common analytical workflows:

Material synthesis
↓
Powder characterization
↓
Electrolyte preparation
↓
Cell assembly
↓
Electrochemical testing
↓
Failure analysis

 

6. J&K Product Solutions for Solid-State Batteries 

6.1 Solid Electrolyte Precursors & Raw Materials：

For Oxide Electrolytes

• Lithium carbonate（554-13-2）
• Lithium hydroxide（1310-65-2 (anhydrous) / 1310-66-3 (monohydrate)）
• Lanthanum oxide（1312-81-8）
• Zirconium oxide（1314-23-4）
• Tantalum oxide（1314-61-0）
• Aluminum oxide （1344-28-1）

Applications: LLZO, LATP, LAGP ceramic electrolytes

 

For Sulfide Electrolytes

• Lithium sulfide (Li₂S)（12136-58-2）
• Phosphorus pentasulfide (P₂S₅)（1314-80-3）
• Lithium chloride（7447-41-8） 
• Lithium bromide（7550-35-8）
• Germanium precursors（/）
• Silicon sulfide related materials（/）

Applications: LGPS, Li₆PS₅Cl, sulfide glass electrolytes

 

For Polymer Electrolytes

• Polyethylene oxide (PEO)（25322-68-3）
• PVDF-HFP（9011-17-0）
• PAN（25014-41-9）
• PMMA（9011-14-7）
• PEG derivatives（25322-68-3）

Applications: Flexible solid-state batteries, composite membranes

 

6.2 Lithium Salts & Functional Additives

• LiTFSI（90076-65-6）
• LiFSI（171611-11-3）
• LiPF₆ (hybrid systems)（21324-40-3）
• LiBOB（244761-29-3）
• Lithium bis(oxalato)borate（244761-29-3）

Functions:

• Increase ionic conductivity
• Improve interfacial stability
• Extend cycle life
• Suppress lithium dendrites

 

6.3 Cathode & Anode Material Support

Cathode Side

• LFP materials（15365-14-7）
• NCM precursor materials（/）
• High-nickel cathode additives（/）
• Conductive carbon black（1333-86-4）
• CNT（308068-56-6）
• Graphene conductive agents（1034343-98-0）

Anode Side

• Lithium metal foil（7439-93-2）
• Silicon materials（7440-21-3）
• Graphite（7782-42-5）
• Lithium alloy research materials（/）

 

6.4 Process Solvents & Auxiliary Chemicals

For slurry preparation, coating, cleaning, and R&D workflows:

• NMP（872-50-4）
• DMF（68-12-2）
• DMSO（67-68-5）
• Acetonitrile（75-05-8）
• Ethanol（64-17-5）
• IPA（67-63-0）
• Ultra-dry anhydrous solvents（/）

 

7. Frequently Asked Questions (FAQ)

What materials are used in solid-state batteries?

Solid-state batteries typically contain:

• Solid electrolyte materials
• Lithium salts
• Cathode materials
• Anode materials
• Conductive additives
• Interface modification materials

What is the most widely studied sulfide solid electrolyte?

Li₆PS₅Cl and LGPS-type electrolytes are among the most extensively studied sulfide solid electrolyte systems because of their high ionic conductivity.

Which lithium salt is commonly used in polymer solid electrolytes?

Lithium bis(trifluoromethanesulfonyl)imide (LiTFSI, CAS No.: 90076-65-6) is one of the most commonly used lithium salts in polymer solid electrolyte research.

Why are sulfide electrolytes sensitive to moisture?

Sulfide electrolytes can react with moisture to generate hydrogen sulfide (H₂S), affecting electrolyte stability and battery performance.

 

8. Explore J&K Scientific Solid-State Battery Materials Portfolio

From sulfide electrolyte precursors, oxide electrolyte materials, lithium salts, battery solvents, to laboratory consumables, J&K Scientific provides reliable material solutions for:

• Solid-state battery R&D
• Electrolyte synthesis
• Battery material screening
• Academic research
• Industrial battery development

Looking for high-purity materials for solid-state battery research and manufacturing?

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