Graphite Synthesis
Our Lab is developing a method of producing battery-grade, high purity, crystalline flake and rationally shaped graphite from inexpensive biomass or lignite. A mixture of carbon-containing feedstock and a low cost, recoverable, catalyst are irradiated with a high-power laser thereby converting the biomass into graphite suitable for a a wide range of applications, including Li-ion batteries.
Silicon from Zintl Phases
Silicon is an attractive active material in Li-ion battery anodes due to its low cost, high abundance, non-toxicity, and high gravimetric and volumetric capacity - Si has 10x more Li-ion storage capacity than graphite. In our lab, we have developed an economically feasible method for manufacturing high performing anode grade Nano-Si (i.e. Nano Si from Zintl phase).
Li-O2 Batteries
Li-O2 is a prominent next-generation battery chemistry, with a theoretical energy density of 3504 Wh/kg, an order of magnitude larger than current Li-ion batteries. In our lab, we are currently working on optimizing surface chemistry and electrolytes to prevent electrolyte degradation and improve cycling lifetimes.
If you are interested in working on these projects, contact Dr. Wagner by email at wagnerm@gwu.edu. Research assistantships are available in all areas!