Sungkyunkwan University · Engineering
Professor Soo Min Hwang's research lab specializes in the design and synthesis of advanced functional materials for sustainable energy applications. The lab focuses on developing novel nanomaterials—particularly metal oxides, doped carbons, and hybrid electrodes—for high-performance energy storage devices such as lithium-ion and sodium-ion batteries, as well as flow-based batteries. Key research directions include nanostructure engineering, interface control in dielectric and electrode materials, and scalable, low-cost fabrication processes for large-scale energy storage. The lab emphasizes practical solutions through innovative materials synthesis and process optimization, targeting both performance enhancement and environmental sustainability.
Figures are computed from collected data and may differ slightly.
Mesoporous hollow fibres of MnCo2O4 and CoMn2O4 were synthesized by electrospinning and highly exothermic oxygen-mediated combustion reactions during calcination, in which the heating rate affected the final fibre morphology (e.g., single- or double-shell). The anodes consisting of hollow fibres showed excellent electrochemical properties for lithium-ion batteries.
High-permittivity (k) ZrO2/Si(100) films were fabricated by a sol-gel technique and the microstructural evolution with the annealing temperature (Ta) was correlated with the variation of their electrical performance. With increasing Ta, the ZrO2 films crystallized into a tetragonal (t) phase which was maintained until 700 °C at nanoscale thicknesses. Although the formation of the t-ZrO2 phase obviously enhanced the k value of the ZrO2 dielectric layer, the maximum capacitance in accumulation was
Cheap, familiar saltwater (NaCl solution) was utilized to build low-cost, safe rechargeable batteries for large-scale electrical energy storage applications.
Lithium-ion batteries (LIBs) are the main driving force behind the proliferation of mobile devices and electric vehicles. The production technologies of LIBs have been developed with the aim of lowering the energy cost (US$ kWh−1) and environmental impact while increasing the production efficiency. Here, we report dry-processed Ni-rich oxide cathodes coated with carbon nanotubes (CNTs) for LIBs. Specifically, LiNi0.8Co0.15Al0.05O2 (NCA) particles coated with multi-walled CNTs (MWCNTs) were used
We report the preparation of porosity-tuned N-doped carbons <italic>via</italic> thermolysis of nonporous Zn-based coordination polymers constructed with nitrogen-containing ligands, in which especially mesoporosity is developed.
Hybrid-type Na–air batteries using a flow-through configuration and an acidic catholyte are investigated to enhance the battery performance.
The phase evolution of CuS during the lithiation and delithiation processes is explored by a combination of <italic>operando</italic> and <italic>ex situ</italic> analyses.
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