The performance of lithium-ion batteries (LIBs) is significantly influenced by ambient temperature. As temperatures drop, conventional electrolytes can become more viscous, leading to reduced ionic conductivity and diminished battery efficiency. Ethylene Glycol Bis(2-cyanoethyl) Ether (DENE, CAS 3386-87-6) has gained attention as a potent electrolyte additive specifically for its ability to counteract these low-temperature effects. This article explores the scientific basis for DENE's efficacy in improving battery performance in cold conditions.

At its core, DENE functions by modifying the properties of the liquid electrolyte within the LIB. The key mechanism by which DENE improves low-temperature performance is by reducing the overall viscosity of the electrolyte and enhancing its ionic conductivity at sub-zero temperatures. This is often achieved through DENE's molecular structure and its interaction with common electrolyte solvents, such as organic carbonates (e.g., ethylene carbonate, dimethyl carbonate). DENE can disrupt the formation of highly ordered structures in the electrolyte that tend to stiffen at lower temperatures, thus maintaining a more fluid state conducive to ion transport.

The reduction in electrolyte viscosity directly translates to lower interfacial resistance between the electrolyte and the electrodes. This lower resistance means that lithium ions can move more freely and quickly to and from the electrode surfaces during charging and discharging. Consequently, batteries containing DENE exhibit improved rate capability—the ability to deliver or accept current rapidly—even when the temperature is low. This is a critical advantage for applications like electric vehicles (EVs), which must operate reliably in diverse climatic conditions.

Moreover, DENE contributes to the formation of a more stable solid electrolyte interphase (SEI) layer on the anode. A well-formed SEI layer is crucial for preventing continuous electrolyte decomposition and lithium dendrite growth, especially during repeated cycling at low temperatures. The passivation effect of DENE on the electrode surfaces helps to maintain the integrity of this protective layer, further contributing to both extended cycle life and improved safety.

For battery developers and manufacturers, understanding these scientific principles underscores the value of DENE as an additive. When you choose to buy DENE from a reputable manufacturer like NINGBO INNO PHARMCHEM CO.,LTD., you are investing in a scientifically validated solution. Our high-purity DENE (≥99.5%) ensures that these performance-enhancing properties are consistently delivered. We offer competitive pricing and a reliable supply chain, making it easier for your R&D teams and production lines to integrate this advanced chemical into your next-generation battery designs.

By incorporating DENE, manufacturers can create LIBs that offer superior performance across a broader temperature range, enhancing user experience and expanding the potential applications for battery technology. We encourage battery researchers and engineers to explore the benefits of DENE and to contact us for samples and quotations. Partnering with a knowledgeable supplier like us can provide the crucial chemical components needed to drive innovation in energy storage.