- Advanced Battery Materials and Technologies
- Advancements in Battery Materials
- Advanced Battery Technologies Research
- Supercapacitor Materials and Fabrication
- Advanced battery technologies research
- Conducting polymers and applications
- BIM and Construction Integration
- Ammonia Synthesis and Nitrogen Reduction
- Photonic and Optical Devices
- Advanced Photonic Communication Systems
- Advanced Sensor and Energy Harvesting Materials
- Construction Project Management and Performance
- Extraction and Separation Processes
- Innovative Energy Harvesting Technologies
- Microwave Engineering and Waveguides
- Semiconductor materials and devices
Pohang University of Science and Technology
2020-2025
Government of the Republic of Korea
2021
Seoul National University
2013
ConspectusWith the escalating demands of portable electronics, electric vehicles, and grid-scale energy storage systems, development next-generation rechargeable batteries, which boasts high density, cost effectiveness, environmental sustainability, becomes imperative. Accelerating these advancements could substantially mitigate detrimental carbon emissions. The pursuit main objectives has kindled interest in pure silicon as a high-capacity electroactive material, capable further enhancing...
Abstract The interaction between the electrolyte and working electrode surface affects cascade of reactions involving Li deposition, N 2 , proton carriers consequently NH 3 production from Li‐mediated nitrogen reduction reaction (Li‐NRR). Efficient Li‐NRR at low concentrations is particularly challenging because current density uneven metal lithium nitride plating. Here, enhanced electrochemical for a concentration 0.5 m are demonstrated by employing 3D porous polymer fibers featuring +...
Abstract Li‐ion batteries (LIBs) have wide applications owing to their high‐energy density and stable cycle characteristics. Nevertheless, with the rapid expansion of electric vehicle market, issues such as explosion LIBs need secure a longer driving distance emerged. In this work, functional metal–organic frameworks (MOFs) are introduced separator in LIBs, which highly heat‐resistant polymer is fabricated through electrospinning. The MOFs can scavenge impurities (including gas, water,...
Abstract High‐capacity anode materials are promising candidates for increasing the energy density of lithium (Li)‐ion batteries due to their high theoretical capacities. However, a rapid capacity fading huge volume changes during charge‐discharge cycles limits practical applications. Herein, layering‐charged polymeric binder is introduced that can effectively integrate high‐capacity anodes using strong yet reversible Coulomb interaction and enriched hydrogen bonding. The charged builds...
Flexible lithium-ion batteries (LIBs) have attracted significant attention owing to their ever-increasing use in flexible and wearable electronic devices. However, the practical application of LIBs devices has been plagued by challenge simultaneously achieving high energy density flexibility. Herein, a hierarchical 3D electrode (H3DE) is introduced with mass loading that can construct highly ultrahigh density. The H3DE features bicontinuous structure active materials along conductive agents...
As society strides toward a sustainable future powered by lithium-ion batteries, the integral role of polymeric binders becomes increasingly evident. Historically serving as film former and chemical adhesive that amalgamates active host materials conductive carbon in battery electrodes, their has been redefined with advent innovative systems materials. These emerging technologies pose unique challenges, propelling shift “customizable” binder designs. Polymeric should now ensure structural...
Abstract Rechargeable batteries have been a profoundly greater part of our lives than we could ever imagined. The rechargeable Li‐ion (LIBs) that developed for transport systems even put fossil fuels in the corner. However, state‐of‐the‐art with graphite anodes are now approaching their theoretical specific energy limits, so they cannot meet increasing demands range portable electronics and large‐scale storage systems. Li metal is one most promising anode materials break through density...
The demand for fast-charging and high-energy-density energy storage systems necessitates advanced anode materials with enhanced performance. This study introduces hard carbon-encaged tin (Sn) nanodots (HCSN) as a versatile composite lithium-ion sodium-ion batteries, designed to address the present challenges. HCSN is synthesized via sol-gel process controlled thermal reduction; subsequently, HCSN700 electrode features uniformly distributed Sn within robust carbon matrix, effectively...
Silicon (Si) anodes offer a high specific capacity (> 3,500 mA h g-1), but severe volume changes during cycling and poor intrinsic conductivity hinder commercialization. Carbon nanotubes (CNTs) are commonly incorporated to improve the electronic of Si electrodes, their tendency aggregate in polar solvent-based slurries leads non-uniform electrodes. To address this, we synthesize polyacrylamide-grafted CNTs (PAM-g-CNTs) by covalently attaching hydrophilic acrylamide monomers CNT surfaces....
Abstract Aqueous zinc metal batteries (AZMBs) are emerging energy storage systems that poised to replace conventional lithium‐ion owing their intrinsic safety, facile manufacturing process, economic benefits, and superior ionic conductivity. However, the issues of inferior anode reversibility dendritic plating during operation remain challenging for practical use AZMBs. Herein, a gel electrolyte based on zwitterionic poly(sulfobetaine methacrylate) (poly(SBMA)) dissolved with different...
Lithium metal anode (LMA) emerges as a promising candidate for lithium (Li)-based battery chemistries with high-energy-density. However, inhomogeneous charge distribution from the unbalanced ion/electron transport causes dendritic Li deposition, leading to "dead Li" and parasitic reactions, particularly at high utilization ratios (low negative/positive in full cells). Herein, an innovative LMA structural model deploying hyperporous/hybrid conductive architecture is proposed on single-walled...
Lithium (Li) metal has long been thought to be an ideal anode material for high‐energy‐density Li batteries (LMBs). Nonetheless, a variety of safety risks and short cycle life due uncontrollable dendrite growth limit its practical application. Here, novel polymer‐based 3D host composed stacked polymer fibers (SPF) is purposefully designed using simple electrospinning method achieve dual‐functional properties that endow bottom‐up filling morphologically regulate deposition over the structure....
For stable battery operation of silicon (Si)-based anodes, utilizing cross-linked three-dimensional (3D) network binders has emerged as an effective strategy to mitigate significant volume fluctuations Si particles. In the design binders, careful selection appropriate cross-linking agents is crucial maintaining a balance between robustness and functionality network. Herein, we strategically optimize 3D binder through comprehensive analysis agents. The proposed composed poly(vinyl alcohol)...
Lithium metal anode (LMA) emerges as a promising candidate for lithium (Li)-based battery chemistries with high-energy-density. However, inhomogeneous charge distribution from the unbalanced ion/electron transport causes dendritic Li deposition, leading to “dead Li” and parasitic reactions, particularly at high utilization ratios (low negative/positive in full cells). Herein, we propose an innovative LMA structural model deploying hyperporous/hybrid conductive architecture on single-walled...
Polymeric Binders In article number 2213458, Soojin Park, Jaegeon Ryu, Youn Soo Kim, and co-workers present an unprecedented layering-charged polymeric binder for high-capacity anodes. The charge-directed network efficiently dissipates the stress of electrode during cycling using a reversible Coulomb interaction exhibits superior electrochemical performance various anode materials.
Lithium-based batteries are as promising energy storage systems. With the demands such large-scale system and high-energy-density for electrification, all components in battery have been recently developed.