Battery Materials Engineer

• Feb 2022 - Present

Graduate Researcher

• Oct 2020 - Jun 2022

Principle Investigator: Professor Zheng Chen • Utilized lithiophilic substrate to mitigate dendrite formation and enhance cycling performance for lithium metal batteries at low temperatures. •Utilized localized high concentration electrolytes and liquefied gas electrolytes to enable stable cycling performance with high coulombic efficiency for LMBs at low-temperatures • Trained new graduate researchers on LAND and Newware battery cyclers to safely operate, and program the experiments Publications: 1. Kim, K., Li, M., Kim, T., Yin, Y., Cai, G., Holoubek, J., Chen, Z. (2022). Influence of Lithiophilic Substrates on Lithium Metal Batteries at Low Temperature. Journal of The Electrochemical Society. https://doi.org/10.1149/1945-7111/aca831 2. Holoubek, J., Kim, K., Yin, Y., Wu, Z., Liu, H., Li, M., Chen, A., Gao, H., Cai, G., Pascal, T. A., Liu, P., Chen, Z. (2022). Electrolyte design implications of ion-pairing in low-temperature Li Metal Batteries. Energy & Environmental Science. https://doi.org/10.1039/d1ee03422g

Researcher

• Mar 2020 - Aug 2020

• Analyzed materials’ physical properties in ASTM or ISO standard with analytical testing machine such as UTM • Provided authentication with written reports for the material property through running flexure, puncture, izod and charpy impact, melt index, tensile strength, peel, friction, wear, heat deflection temperature, and Rockwell hardness tests • Contributed more than $2000 weekly from testing or authenticating requests from clients. • Analyzed materials’ physical properties in ASTM or ISO standard with analytical testing machine such as UTM • Provided authentication with written reports for the material property through running flexure, puncture, izod and charpy impact, melt index, tensile strength, peel, friction, wear, heat deflection temperature, and Rockwell hardness tests • Contributed more than $2000 weekly from testing or authenticating requests from clients.

Research Assistant

• Jun 2019 - Aug 2019

• Conducted Relative Temperature Index testing, including Izod impact, tensile strength, dielectric strength disk, and flame retardant tests, that met the thermal standards for the polycarbonate plastic compounds. • Molded the RTI test samples with injection molding and daily reported the optimal molding temperature, pressure, switchover point, injection speed, shot size, and holding and cooling time that molded samples without defects. • Cooperated with a doctorate researcher on molding and testing biodegradable plastics samples for the future replacement of the current polycarbonate compound plastics which improved properties suitable for mass production

Senior Design Project Manager

• Jan 2019 - May 2019

• Utilized AutoCAD and COMSOL software to design and simulate heat transfer mechanisms in a battery module consisting of 72 batteries that could supercharge in 5 minutes at 12 C-rate which met the supercharging parameter requests made by 3M. • Determined the optimal design of the battery module that could manage heat generation effectively by testing varying battery geometries, spacing, casing methods, coolant materials, flow rates, battery casing and coating materials. • Removed, effectively, more than 150ºC of heat generated from approximately 500K to 300K of each battery in the module by using silica carbide nanofluid as the liquid coolant, aluminum for casing and coating material at the flow rate of 0.03 m/s.

Infantry

• Aug 2014 - May 2016

-Delivered training and coaching to USMC and ROKMC. -Interpreted for Korean Marine Exchange Program in 2015 Key Contributions: -Awarded 2 times for heading the best squad in the battalion -Delivered training and coaching to USMC and ROKMC. -Interpreted for Korean Marine Exchange Program in 2015 Key Contributions: -Awarded 2 times for heading the best squad in the battalion