A5100740899- Advancements in Battery Materials
- Advanced Battery Materials and Technologies
- Advanced Battery Technologies Research
- Supercapacitor Materials and Fabrication
- Extraction and Separation Processes
- Conducting polymers and applications
- Semiconductor materials and interfaces
- Recycling and Waste Management Techniques
- Advanced Sensor and Energy Harvesting Materials
- Electron and X-Ray Spectroscopy Techniques
- Advanced battery technologies research
- Synthesis and properties of polymers
- Fuel Cells and Related Materials
- Semiconductor materials and devices
- Machine Learning in Materials Science
- Transition Metal Oxide Nanomaterials
- Flame retardant materials and properties
- Fiber-reinforced polymer composites
- Material Properties and Processing
- Electric Vehicles and Infrastructure
- Quantum Dots Synthesis And Properties
- Chemical Synthesis and Characterization
- Polyoxometalates: Synthesis and Applications
- Gas Sensing Nanomaterials and Sensors
- Thermal Expansion and Ionic Conductivity
Daegu Gyeongbuk Institute of Science and Technology
2013-2025
Yonsei University
2024-2025
Electronics and Telecommunications Research Institute
2024-2025
Government of the Republic of Korea
2014-2019
Hanbat National University
2009-2017
Daejeon University
2015-2017
LG Chem (South Korea)
2012-2016
National Institute of Diabetes and Digestive and Kidney Diseases
2016
ProQuest (United States)
2016
Yuhan University
2014
Polydopamine-treated polyethylene (PE) separators for high-power lithium ion batteries are developed. A simple dipping process makes the PE surfaces hydrophilic and thus enhances power capabilities remarkably compared to those of control cases with bare separators. The original mechanical thermal properties preserved. Detailed facts importance specialist readers published as ”Supporting Information”. Such documents peer-reviewed, but not copy-edited or typeset. They made available submitted...
Because of its unprecedented theoretical capacity near 4000 mAh/g, which is approximately 10-fold larger compared to those the current commercial graphite anodes, silicon has been most promising anode for lithium ion batteries, particularly targeting large-scale energy storage applications including electrical vehicles and utility grids. Nevertheless, Si suffers from short cycle life as well limitation scalable electrode fabrication. Herein, we develop an electrospinning process produce...
An excellent cycle life (150 cycles with 80% retention) for lithium-metal anodes in lithium-ion batteries is achieved by employing mussel-inspired polydopamine-treated-polyethylene separators. This originates from the polydopamine coating, which enables a uniform ionic flux, as well catecholic adhesion of separators onto lithium surfaces. Additionally, coating improves thermal-shrinkage properties polyethylene
The effect of mechanical surface modification on the performance lithium (Li) metal foil electrodes is systematically investigated. applied micro‐needle treatment technique for Li has various advantages. 1) This economical and efficient able to cover a wide range area with simple rolling process, which can be easily conducted. 2) achieves improved rate capability cycling stability, as well reduced interfacial resistance. improves by 20% (0.750 mAh at 7C) increases stability 200% (85% initial...
Repressing uncontrolled lithium (Li) dendrite growth is the top priority for enabling reliable use of Li metal secondary batteries. On other hand, technique controlling plating behavior during indeed has been considered very difficult to achieve. For instance, how can one plate ions on favored selected region plating? The present study describes achieve this goal, i.e., dendrite‐free deposition, by mechanical surface modification using a simple stamping technique, where finite‐element method...
All-solid-state lithium batteries (ASSLBs) are considered promising alternatives to current lithium-ion as their use poses less of a safety risk. However, the fabrication composite cathodes by conventional slurry (wet) process presents technical challenges, such limited stability sulfide electrolytes against organic solvents and increase ionic resistance due insulating polymer binder. Herein, we develop cathode fabricated using solvent-free (dry) process. The is prepared with Li+-conducting...
Abstract The graphite/silicon‐based diffusion‐dependent electrodes (DDEs) are one of the promising electrode designs to realize high energy density for all‐solid‐state batteries (ASSBs) beyond conventional composite design. However, also suffers from large initial irreversible capacity loss and fade caused by significant volume change during cycling, which offsets advantages DDEs in ful‐cell configuration. Herein, a new concept is presented DDEs, dry pre‐lithiated (PL‐DDEs) introducing Li...
The morphological and compositional changes of the solid electrolyte interphase (SEI) layer formed on surface Si thin electrodes during precycling were investigated. At beginning charging, native ( silanol) covering electrode is readily destroyed a new SEI by decomposition both organic solvents anions. this stage, interfacial resistance decreases to minimum level. Thereafter, increases with charging due growth an layer, which mainly originated from solvents. During discharging process, was
A 3D iron porphyrin/graphene hydrogel electrocatalyst affords highly efficient, durable and selective CO<sub>2</sub> reduction to CO at a low overpotential.
Owing to the natural abundance of sodium resources and their low price, next-generation batteries employing an Na metal anode, such as Na–O2 Na–S systems, have attracted a great deal interest. However, poor reversibility electrode during repeated electrochemical plating stripping is major obstacle realizing rechargeable batteries. It mainly originates from dendrite formation exhaustive electrolyte decomposition due high reactivity metal. Herein, we report free-standing composite protective...
A highly adhesive and thermally stable copolyimide (P84) that is soluble in organic solvents newly applied to silicon (Si) anodes for high energy density lithium-ion batteries. The Si with the P84 binder deliver not only a little higher initial discharge capacity (2392 mAh g(-1)), but also fairly improved Coulombic efficiency (71.2%) compared anode using conventional polyvinylidene fluoride (2148 g(-1) 61.2%, respectively), even though reduced irreversibly during first charging process. This...
The adhesion strength of lithium-ion battery (LIB) electrodes consisting active material, a nanosized electric conductor, and polymeric binder is measured with new analysis tool, called the Surface Interfacial Cutting Analysis System (SAICAS). Compared to conventional peel test same electrode, SAICAS gives higher owing its elaborate cutting-based measurement system. In addition, effects on property type content, electrode density, measuring point are also investigated determine whether...
A stable electrolyte system at a charge voltage over 4.5 V is the key to successfully obtaining higher energy density by raising charging cutoff voltage. We demonstrate fluorinated (1 M LiPF6 fluoroethylene carbonate (FEC) and methyl (2,2,2-trifluoroethyl) (FEMC) (FEC/FEMC = 1/9, v/v)) for high-voltage LiNi0.5Mn0.3Co0.2O2/graphite system. The stability of LiNi0.5Mn0.3Co0.2O2 (NMC532) cathode was investigated using scanning electron microscopy, X-ray photoelectron spectroscopy,...
Abstract The digital twin technique has been broadly utilized to efficiently and effectively predict the performance problems associated with real objects via a virtual replica. However, digitalization of electrochemical systems not achieved thus far, owing large amount required calculations numerous complex differential equations in multiple dimensions. Nevertheless, help continuous progress hardware software technologies, fabrication twin‐driven system its effective utilization have become...
Abstract Making Li metal batteries (LMBs) with thinner is necessary to improve the cell energy density in practice. powders (LMPs) are beneficial for facile manufacturing of thin Li, flexible design, and 3D control plating/stripping. However, inhomogeneous surfaces commercial LMPs limit their practical use LMBs. Herein, a 20 µm‐thick, LiNO 3 preplanted LMP (LN‐LMP) composite electrode, rationally designed surface stabilization, presented. The addition into slurry uniformly modified by N‐rich...
Abstract Despite their high theoretical energy density and low cost, lithium–sulfur batteries (LSBs) suffer from poor cycle life efficiency owing to the polysulfides shuttle electronic insulating nature of sulfur. Conductivity polarity are two critical parameters for search optimal sulfur host materials. However, role in immobilizing enhancing redox kinetics long‐life LSBs not fully understood. This work has conducted an evaluation on over conductivity by using a polar but nonconductive...