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Electrolyte for LIB
High Ionic Conductivity Electrolyte for Lithium-ion Batteries
Acetolyte™
- Batteries
Marketing Areas
- JAPAN
- EUROPE
- NORTH AMERICA
- CHINA
- INDIA
Our electrolyte, which demonstrates lithium-ion conductivity superior to conventional electrolytes, achieves both improved low-temperature performance and high-temperature durability.
Feature
- High lithium-ion conductivity
- Electrode-electrolyte Interface Control Technology
- Electrolyte technology for operation across a wide temprature range
Usage
- Lithium-ion battery
Electrolyte for LIB
High Ionic Conductivity Electrolyte for Lithium-ion Batteries
Acetolyte™
Acetolyte™, Asahi Kasei’s high ionic conductivity electrolyte, provides design flexibility from high‑power to high‑capacity battery configurations and supports applications ranging from HEVs to BEVs. It ensures reliable performance across a wide temperature range and enhances EV utility through fast‑charging capability.
Acetolyte™, Asahi Kasei’s high ionic conductivity electrolyte, provides design flexibility from high‑power to high‑capacity battery configurations and supports applications ranging from HEVs to BEVs. It ensures reliable performance across a wide temperature range and enhances EV utility through fast‑charging capability.
High lithium-ion conductivity
Focusing on ionic conductivity, which governs the charge/discharge performance and temperature characteristics of lithium-ion batteries, acetonitrile was selected as the solvent of the electrolyte due to its outstanding solvated Li+ mobility and superior interfacial insertion characteristics. As a result, Asahi Kasei’s electrolyte, Acetolyte™, exhibits significantly higher ionic conductivity compared with conventional electrolytes.
Electrode-electrolyte Interface Control Technology
Through proprietary additive design and optimized formation protocols, precise control of anode SEI (Solid Electrolyte Interphase) has been established, facilitating Li+ insertion/de-insertion kinetics while suppressing the reductive decomposition of acetonitrile. This breakthrough has enabled the practical implementation of acetonitrile-based electrolytes in lithium-ion batteries, overcoming what was previously regarded as fundamental limitation.
Electrolyte Technology for Operation Across Extreme Temperatures
Achieving both low-temperature performance and high-temperature durability in lithium-ion batteries has long been considered challenging. Asahi Kasei’s high ionic conductive electrolyte, Acetolyte™, maintains high lithium-ion conductivity even at low temperatures while forming a stable SEI on the anode at elevated temperatures, enabling reliable operation across a wide temperature range. These characteristics are derived from the intrinsic properties of acetonitrile as a solvent and Asahi Kasei's proprietary electrolyte formulation technology.
Enhanced Low-Temperature Performance and High-Temperature Durability
With the growing adoption of EVs, there is increasing demand for reliable operation under harsh temperature conditions, such as below -20°C and above 50°C. At low temperatures, reduced capacity, lower power output, and extended charging times become critical challenges, while at high temperatures, accelerated battery degradation shorten cycle life. Lithium-ion batteries incorporating Asahi Kasei’s high ionic conductive electrolyte, AcetolyteTM, have been demonstrated to deliver practical power output even at low temperatures ranging from -40°C to -20°C, while maintaining excellent charge-discharge cycle durability at elevated temperatures up to 60°C.
Enabling Higher Capacity Through Thicker Electrodes
To extend EV driving range, improving the energy density of lithium-ion batteries is essential, and increasing electrode thickness is being actively pursued. However, thicker electrodes typically lead to reduced lithium-ion transport efficiency, limiting practical charge-discharge performance. Asahi Kasei’s high ionic conductive electrolyte, AcetolyteTM, maintains high lithium-ion conductivity even with thicker electrodes, enabling efficient charge and discharge at practical current densities. This contributes to increasing battery capacity and extending driving range.
Reducing Cell Count to Enable Compact and Lightweight Battery Packs
There is growing demand for technologies that enable downsizing and weight reduction of lithium-ion batteries. By leveraging its exceptionally high lithium-ion conductivity, Asahi Kasei’s high ionic conductive electrolyte, AcetolyteTM, enhances battery performance. This allows overall pack output to be maintained while reducing the number of cells required, thereby contributing to more compact and lightweight battery pack designs.
Enabling High Fast-Charging Performance
Long charging times remain one of the key factors limiting the convenience of electric vehicles, driving the development of batteries compatible with fast-charging applications. Leveraging its exceptionally high lithium-ion conductivity, Asahi Kasei’s high ionic conductive electrolyte, AcetolyteTM, contributes to reducing lithium-ion battery charging time and enhancing fast-charging performance.
Product Q&A
QWhat does Asahi Kasei’s AcetolyteTM electrolyte consist of?
QDo we need special equipment to handle AcetolyteTM?
