Lithium ion battery has become the standard source of power for mobilizing millions of people around the world each day. As the demand for electric vehicles and smaller, faster electronics continues to grow, so is the need for safer, lighter, and longer-lasting batteries. Halocarbon is partnering with leading lithium ion battery companies to develop unique fluorochemical solutions that enhance the safety and performance of high-voltage lithium ion batteries.

Improved Safety and Performance Starts Here

Additives and Co-Solvents to Enhance Existing Electrolyte Formulations

Halocarbon offers a broad range of ready-to-formulate additives and co-solvents that have been designed for compatibility with existing cell designs.

Our goal is simple—to make fluorinated materials for lithium ion batteries more accessible and commercially viable. Developing safe and reliable high-voltage lithium ion batteries is difficult enough. Finding the right chemistry should not stand between you and your next breakthrough.

Contact our sales manager to learn more about our fluoroproducts. Let’s create your next breakthrough in lithium ion battery innovation.

How Fluorochemistry Helps Drive Safety and Performance

Halocarbon can help you find the right additives or co-solvents

At higher voltages (>4.2 V) lithium ion battery electrochemistry necessitates the use of more robust materials and cell components. Fluorinated materials are ideally suited for use in environments of high redox potential due to the inherent thermodynamic stability of the C—F bond. The table below provides comparative examples of simple hydrocarbons and their fluorinated analogs.

Halocarbon scientists have worked with leading electrolyte and battery manufacturers to better understand these effects, and have designed a broad range of fluorinated molecules to leverage these benefits for use in high-voltage lithium ion batteries. Below are three key areas that our fluorinated materials have been demonstrated to help drive new levels of safety and performance in high-voltage cells.

The Effect of Fluorinated Additives and Co-Solvents on Electrolyte Stability

Leveraging the Physical Properties of Fluorocarbons to Improve Charge Transport

The demand for higher energy densities in lithium ion batteries continues to grow. Unfortunately, traditional electrolyte solvents are susceptible to breakdown, especially at voltages higher than 4.2 V. The products of these electrochemical degradations tend to form insoluble aggregates that lead to increased resistance within the cell, resulting in decreased capacity retention and cyclability over time. Halocarbon has designed fluorinated materials that have much higher anodic stabilities compared to their non-fluorinated counterparts, making them ideal for use at higher voltage ranges. Halocarbon offers a broad range of fluorinated materials that were specifically designed to improve the capacitance and prolong the lifetime of high voltage cells. In addition, some of these fluorinated materials will also reduce the flammability of electrolyte solutions, increasing the safety and reliability of the lithium ion batteries in which they are used.

Fine-Tuning the SEI Layer

The solid electrolyte interphase (SEI) is a self-assembled porous coating that forms a protective layer on the surface of graphite anodes. The SEI layer forms during the initial charge-discharge cycles of a lithium ion battery cell and is created by the electrochemical breakdown of various components in the electrolyte. The SEI layer is essential to the health and performance of a lithium ion battery, helping to mitigate initial capacity-loss during early cycles, increasing cell lifetimes, and improving the overall safety of the battery. Halocarbon fluorinated additives and co-solvents are specifically designed to generate uniform SEI layers that electronically insulate and protect the surface of the anode, preventing adverse degradation of the electrolyte at higher voltages.

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