Kyung Hee University · Engineering
Professor Jong-Won Lee's research lab specializes in advanced energy storage materials, with a primary focus on solid-state batteries and sustainable electrochemical systems. The lab develops innovative materials and architectures—such as surface-engineered graphite anodes, quasi-solid-state electrolytes, and carbon-free cathodes—to enhance the performance, safety, and scalability of lithium-ion and lithium-oxygen batteries. A key research direction involves designing high-conductivity, stable solid electrolytes like LATP and exploring novel fabrication methods for all-solid-state batteries. The lab also pioneers bio-based electrochemical processes, including microbial production of green solvents, demonstrating a multidisciplinary approach to sustainable energy and chemical technologies.
Figures are computed from collected data and may differ slightly.
The realisation of fast-charging lithium-ion batteries with long cycle lifetimes is hindered by the uncontrollable plating of metallic Li on the graphite anode during high-rate charging. Here we report that surface engineering of graphite with a cooperative biphasic MoO<sub>x</sub>-MoP<sub>x</sub> promoter improves the charging rate and suppresses Li plating without compromising energy density. We design and synthesise MoO<sub>x</sub>-MoP<sub>x</sub>/graphite via controllable and scalable surfac
Abstract There are increasing demands for large‐scale energy storage technologies for efficient utilization of clean and sustainable energy sources. Solid‐state lithium batteries (SSLBs) based on non‐ or less‐flammable solid electrolytes (SEs) are attracting great attention, owing to their enhanced safety in comparison to conventional Li‐ion batteries. Moreover, SSLBs can provide great benefits in terms of battery performance (power and energy densities) and cost when constructed using a bipolar
Carbon-free cobalt oxide cathodes for lithium-oxygen batteries are fabricated via an electrodeposition-conversion process. The Co3O4-only cathodes show a remarkably reduced voltage gap (by ca. 550 mV compared to the carbon-only cathode) as well as excellent long-term cyclability.
A quasi-solid-state lithium-oxygen battery constructed using a gel polymer electrolyte with an ionic liquid is proposed. The battery architecture incorporates a design feature that can be easily scaled up in size for use in large systems. The feasibility study demonstrates that the battery operates successfully for repeated discharge-charge cycles.
We have successfully established the biosynthesis pathway of lactate esters from fermentable sugars and demonstrated for the first time the direct fermentative production of lactate esters from glucose using an <i>E. coli</i> modular cell. This study defines a cornerstone for the microbial production of lactate esters as green solvents from renewable resources with novel industrial applications.
In this study, a new method is developed for the fabrication of nanofibrous LaCoO<sub>3</sub> (LCO) perovskites as cathodes (oxygen electrodes) for solid oxide fuel cells (SOFCs).
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