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Presented By: Department of Chemistry

Building a Molecular Graphite from the Ground Up

Megan Jackson (UNC, Chapel Hill)

As global energy demand increases, there is an urgent need for inexpensive, efficient, sustainable batteries. Currently, Li-ion batteries dominate the battery market, but as demand increases and society looks towards greater reliance on electric cars and battery solutions for grid-level storage, there is a need for the development of safe, inexpensive, sustainable batteries. Organic batteries are an intriguing alternative to traditional Li-ion batteries because they are inherently composed of Earth-abundant elements and can typically function with a wide range of cations; however, most organic battery materials operate through molecular redox processes, leading to low conductivity, slow charge transport, and slow charging and discharging. Additionally, they usually require multi-step syntheses that are challenging to scale up. In this talk, we will discuss a class of recyclable self-assembled organic battery materials that proceed through cation-insertion coupled electron transfer in which electrons are transferred to a delocalized pi system rather than to discrete molecular orbitals. We will discuss the mechanism of cation insertion, the parameters that lead to this unique reduction pathway, and why we view this class of materials as a synthetically tunable "molecular graphite."

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