A5061983829- Advancements in Battery Materials
- Advanced Battery Materials and Technologies
- Advanced Battery Technologies Research
- Supercapacitor Materials and Fabrication
- Extraction and Separation Processes
- Recycling and Waste Management Techniques
- Biosensors and Analytical Detection
- Electrowetting and Microfluidic Technologies
- Prion Diseases and Protein Misfolding
- Nanofabrication and Lithography Techniques
- Polydiacetylene-based materials and applications
- Advanced Chemical Sensor Technologies
- Alzheimer's disease research and treatments
- Nanomaterials and Printing Technologies
- Chemical Synthesis and Characterization
- Point processes and geometric inequalities
Ulsan National Institute of Science and Technology
2023-2025
Pukyong National University
2022-2024
University of Minnesota
2015
Lithium-ion batteries (LIBs) can be considered as one of the pivotal components required to succeed in drive towards a greener future. However, current processing methods for cathode electrode make it harmful and costly due toxic solvent drying recovery stages. Additionally, reliance on LIBs particularly emphasizes imperative increased energy density both volume weight, which predominantly relies cathode. To surmount these challenges, this research analyses true requirements novel process...
All-solid-state lithium batteries, including sulfide electrolytes and nickel-rich layered oxide cathode materials, promise safer electrochemical energy storage with high gravimetric volumetric densities. However, the poor electrical conductivity of active material results in requirement for additional conducive additives, which tend to react negatively electrolyte. The fundamental scientific principle uncovered through this work is simple suggests that network benefits associated...
Printing is a promising route for high‐throughput processing of electronic devices on large‐area, flexible substrates by virtue its integration into roll‐to‐roll production formats. However, multilayered require materials registration with micrometer‐level tolerances, which serious challenge continuous manufacturing. Here, novel, self‐aligned manufacturing approach introduced that allows precision patterning inkjet printing microimprinted plastic substrates. Materials achieved automatically...
Abstract The recent development of high‐energy LiCoO 2 (LCO) and progress in the material recycling technology have brought Co‐based materials under limelight, although their capacity still suffers from structural instability at highly delithiated states. Thus, this study, a secondary doping ion substitution method is proposed to improve electrochemical reversibility LCO for Li‐ion batteries. To overcome states, Na ions are utilized as functional dopants exert pillar effect Li sites. In...
Abstract The increasing adoption of Ni‐rich cathode active materials in commercial liquid electrolyte Lithium‐ion batteries (LIBs) is testament to the improvements stability through various surface modification strategies. development a deeper understanding cathode/electrolyte interface LIBs has resulted coatings capable mitigating both and bulk degradation mechanisms. However, due demands for safe high energy density cells, large portion research now shifted towards applying inherently...
The self-aggregation of amyloid β (Aβ) proteins has played a crucial role in the pathogenesis Alzheimer's diseases. Despite previous studies on aggregation process Aβ proteins, little is known about how cross-interaction between isoforms affects pathways and resulting structures aggregates. Here, we study Aβ40 Aβ42 during their by measuring kinetics aggregates under varied concentrations isoform mixture. We found that mixture monomers results concentration-dependent leading to different...
Abstract The mainstream of high‐energy cathode development is focused on increasing the Ni‐ratio in layered structured materials. increment Ni portion material escalates not only deliverable capacity but also structural degradation. High‐Ni cathodes are highly vulnerable to exposure air that contains CO 2 and H O, forming problematic residual lithium compounds at surface. In this work, a novel air‐ moisture robust surface modification reported for LiNi 0.8 Co 0.1 Mn O (NCM811) via sol‐gel...
Sulfide electrolyte all-solid-state lithium-ion batteries (ASSLBs) that have inherently nonflammable properties improved greatly over the past decade. However, determining both stable and functional electrode components to pair with these solid electrolytes requires significant investigation. Solid comprises 20–40% of composite cathode electrode, which improves ionic conductivity. this results in thick blocks electron pathways significantly lowering electrochemical performance. The...
Abstract All‐solid‐state Li batteries (ASSBs) promise better performance and higher safety than the current liquid‐based Li‐ion (LIBs). Sulfide ASSBs have been extensively studied considerably advanced in recent decades. Research on identifying suitable cathode materials for sulfide is currently well established, with great progress being made commercialization of layered cathodes LIBs. anode importance enhancing battery energy density. However, it seems that little has published summarizes...
Lithium-ion batteries (LIBs) continue to dominate the battery market with their efficient energy storage abilities and ongoing development. However, at high charge/discharge C-rates electrochemical performance decreases significantly. To improve power density properties of LIBs, it is important form a uniform electron transfer network in cathode electrode via addition conductive additives. Carbon nanotubes (CNTs) crystallinity, electrical conductivity, aspect ratio have gathered significant...
All-solid-state lithium-ion batteries (ASSLBs) have recently received significant attention due to their exceptional energy/power densities, inherent safety, and long-term electrochemical stability. However, achieve energy- power-dense ASSLBs, the cathode composite electrodes require optimum ionic electrical pathways hence development of electrode designs that facilitate such requirements is necessary. Among various available conductive materials, carbon black (CB) typically considered as a...
All-solid-state lithium-ion batteries (ASSLBs) represent a promising breakthrough in battery technology owing to their high energy density and exceptional stability. When crafting cathode electrodes for ASSLBs, the solid electrolyte/cathode material interface is physically hindered by specific morphology of carbon additive materials. In this paper, we examine distribution conductive additives within electrode its impact on electrochemical performance composites incorporating either...
Recently, an issue has emerged in ASSLBs which carbon materials accelerate the deterioration of sulfide solid electrolytes (SSEs), thereby reducing electrochemical performance. In this paper, we present approach for that can enhance compatibility with ASSLBs. The between and electrolyte is improved by removing amorphous on surface, unavoidably forms surface during material synthesis, covering about 5~7 nm highly crystalline graphite surface. evaluation revealed significant differences...
All-solid-state lithium-ion batteries (ASSLBs) offer superior performance and enhanced safety compared to the existing liquid-based (LIBs). However, recently, an issue has emerged in ASSLBs which carbon materials accelerate deterioration of sulfide solid electrolytes (SSEs), thereby reducing electrochemical performance. In this paper, we present approach for that can enhance compatibility with ASSLBs. The between electrolyte is improved by removing amorphous on surface, unavoidably forms...
As the demand for high-capacity Ni-rich lithium-ion batteries continues to grow, push increase their energy density at material level also increases. To achieve higher densities, binder (BM) and carbon additive (CA) ratios must be minimized, resulting in careful consideration of selection. Recently, nanotubes (CNTs) have been popularized; however, unwanted migration CNTs during electrode manufacturing causes severe agglomeration on surface, leaving behind a poor conductive network throughout...
Colorimetric papers have been widely used for the convenient and inexpensive detection of toxic chemicals including chemical warfare agents (CWAs). The majority colorimetric papers, however, only detect liquid-phase analytes, exhibiting a limited gas-sensing performance. In this study, we report paper capable detecting identifying CWAs in both liquid gas phases, achieved by inkjet-printing carbon nanotube (CNT)-based chemiresistors on paper. inkjet-printed CNTs generate electrical signals...
Li-Ion Batteries In article number 2206576, Pilgun Oh and co-workers report a novel air- moisture robust surface modification for LiNi0.8Co0.1Mn0.1O2 via the sol-gel coating method that selectively coats internal area of secondary particles. The LiCoO2-coated exhibits high-capacity retention after exposure to all tested environments, due prevents penetration harmful compounds into polycrystalline structure.
Despite the recent advancement of sulfide all-solid-state lithium batteries, choice their respective components yet requires further comprehensive investigations into functionality and compatibility. While development cathode materials electrolytes appears to be greatly advanced, there seems a lack attention on carbon conductive additives. As are instable with conventional additives, it is necessary develop additives satisfactory electronic conductivity good chemical/electrochemical...
Carbon nanotubes (CNTs) are being used as a conductive material to achieve fast charging/discharging properties in high current density LIB systems. However, it is difficult form well-distributed electron transfer network within the electrode using CNTs due their aggregational properties. In this paper, we propose strategy fabricate positive with well-dispersed CNTs, controlling solid content and sonication process of slurry LiNi0.8Co0.1Mn0.1O2 cathode materials. The typically not well-mixed...