Silicon anode prelithiation reagent

Our silicon anode prelithiation reagent, 9,9-dimethyl-9H-fluorene (DiMF), with a purity greater than 99.5%, is engineered to optimize the prelithiation process for advanced anode materials such as silicon, silicon oxide, aluminum, hard carbon, and tin. This polycyclic aromatic hydrocarbon forms a potent organic lithium salt, Li+[DiMF]-, when reacted with metallic lithium in ethereal solvents like dimethoxyethane (DME) or tetrahydrofuran (THF). With a redox potential of 0.2 V vs. Li/Li+, our reagent offers a more robust and reducing environment compared to alternatives like lithium naphthalene or n-butyl-lithium. The high purity of our DiMF reagent is crucial for ensuring the formation of a potent Li+[DiMF]- prelithiation solution, which in turn creates an improved artificial solid electrolyte interface on the prelithiated anodes.

Silicon Anode Prelithiation Reagent 9,9-Dimethyl-9H-fluorene enhances the performance and lifespan of silicon-based anodes in lithium-ion batteries by compensating for initial lithium loss. Its use supports greener technologies by improving battery efficiency, enabling longer cycle life, and promoting more sustainable and durable energy storage solutions. Click here for more information.

The silicon anode prelithiation reagent, 9,9-dimethyl-9H-fluorene, ≥99.5%, is a critical component in the development of high-energy-density lithium-ion batteries. By facilitating the controlled preloading of lithium ions into silicon-based anodes through a chemical reduction process, this reagent addresses the challenge of initial irreversible capacity loss, which is a common issue with these high-capacity anode materials.

•Improved Initial Coulombic Efficiency: The prelithiation step enabled by our reagent can increase the initial coulombic efficiency of silicon anodes by up to 30%, ensuring more efficient utilization of the active material.
•Extended Battery Life: By mitigating the detrimental effects of silicon expansion and contraction during cycling, our reagent contributes to enhancing the cycle life of lithium-ion batteries by up to 50%.
•Robust Solid Electrolyte Interface (SEI): The reagent aids in the formation of a stable and durable SEI layer, further improving the cyclability and overall stability of the battery system. With its ability to unlock the full potential of silicon-based anodes, our prelithiation reagent is an indispensable tool for researchers and manufacturers striving to develop next-generation lithium-ion batteries with higher energy densities, longer lifetimes, and improved safety profiles.