A5100440468- Advancements in Battery Materials
- Advanced Battery Materials and Technologies
- Advanced Battery Technologies Research
- Advanced battery technologies research
- Extraction and Separation Processes
- Supercapacitor Materials and Fabrication
- Fatigue and fracture mechanics
- Mechanical stress and fatigue analysis
- Electrocatalysts for Energy Conversion
- Chemical Synthesis and Characterization
- Recycling and Waste Management Techniques
- Gas Sensing Nanomaterials and Sensors
- Semiconductor materials and devices
- Hydrogen embrittlement and corrosion behaviors in metals
- Advancements in Solid Oxide Fuel Cells
- Nanofabrication and Lithography Techniques
- Tribology and Wear Analysis
- Fuel Cells and Related Materials
- Laser Material Processing Techniques
- Surface Roughness and Optical Measurements
- Aluminum Alloys Composites Properties
- Structural Integrity and Reliability Analysis
- Groundwater flow and contamination studies
- Engineering Applied Research
- Synthesis and properties of polymers
Kangwon National University
2005-2025
Seoul National University
2012-2024
Gyeongsang National University
2024
Institute for Basic Science
2024
The University of Texas at Austin
2020-2023
Ulsan National Institute of Science and Technology
2014-2022
University of Ulsan
2019-2021
McMaster University
2017-2020
Hannam University
2020
Chungnam National University
2018-2019
An amorphous red phosphorus/carbon composite is obtained through a facile and simple ball milling process, its electrochemical performance as an anode material for Na ion batteries evaluated. The shows excellent including high specific capacity of 1890 mA h g−1, negligible fading over 30 cycles, ideal redox potential (0.4 V vs. Na/Na+), rate performance, thus making it promising candidate batteries.
We discuss the similarities and dissimilarities of sodium- lithium-ion batteries in terms negative positive electrodes. Compared to comprehensive body work on batteries, research sodium-ion is still at germination stage. Since both sodium lithium are alkali metals, they share similar chemical properties including ionicity, electronegativity electrochemical reactivity. They accordingly have comparable synthetic protocols performances, which indicates that can be successfully developed based...
Na-ion batteries are an attractive alternative to Li-ion for large-scale energy storage systems because of their low cost and the abundant Na resources. This Review provides a comprehensive overview selected anode materials with high reversible capacities that can increase density batteries. Moreover, we discuss reaction failure mechanisms those view suggesting promising strategies improving electrochemical performance.
Sn4P3 is introduced for the first time as an anode material Na-ion batteries. delivers a high reversible capacity of 718 mA h g−1, and shows very stable cycle performance with negligible capacity fading over 100 cycles, which attributed to confinement effect Sn nanocrystallites in amorphous phosphorus matrix during cycling.
Extensive applications of rechargeable lithium-ion batteries (LIBs) to various portable electronic devices and hybrid electric vehicles result in the increasing demand for development electrode materials with improved electrochemical performance including high energy, power density, excellent cyclability, while maintaining low production cost. Here, we present a direct synthesis ferrite/carbon nanosheets battery anodes. Uniform-sized ferrite nanocrystals carbon were synthesized...
High-nickel layered oxide cathodes suffer seriously from the formation of residual lithium on surface, which causes notorious issues, such as slurry gelation and gas evolution. Due to use water for titration determine content, certain practical issues remain unresolved. We present here, first time, a thorough study that reveals following. (1) Li2CO3 impurity in raw materials contributes an increase high-Ni after synthesis. (2) LiOH formed due leaching Li during analyte preparation...
SnSe alloy is examined for the first time as an anode Na-ion batteries, and shows excellent electrochemical performance including a high reversible capacity of 707 mA h g(-1) stable cycle over 50 cycles. Upon sodiation, changed into amorphous NaxSn nanodomains dispersed in crystalline Na2Se, reversibly restored after desodiation.
Well-defined nanostructures composed of conjugated polymers have attracted significant attention due to their intriguing electronic and optical properties. However, precise control the size uniformity these semiconducting is still rare challenging, despite recent advances in strategies obtain self-assembled with narrow dispersions. Herein, we demonstrate preparation fluorescent block copolymers by one-shot polymerization rapid formation nanofibers a few minutes via light-induced...
Lithium-oxygen (Li-O2) batteries are desirable for electric vehicles because of their high energy density. Li dendrite growth and severe electrolyte decomposition on metal are, however, challenging issues the practical application these batteries. In this connection, an electrochemically active two-dimensional phosphorene-derived lithium phosphide is introduced as a protective layer, where nanosized layer suppresses growth. This suppression attributed to thermodynamic properties layer. The...
High-nickel layered oxide cathodes are becoming appealing for lithium-ion batteries employed in portable electronics and electric vehicles because of their higher energy density, low or no cobalt content, ability to be manufactured with existing infrastructure. However, high-nickel oxides plagued by the formation residual lithium species, such as LiOH Li2CO3, on surface, which detrimental manufacturing process performance. Despite problems causes industry, academia mainly focuses safety...
ADVERTISEMENT RETURN TO ISSUEPREVCommunicationNEXTCointercalation of Mg2+ Ions into Graphite for Magnesium-Ion BatteriesDong-Min KimDong-Min KimSchool Chemical and Biological Engineering, Institute Processes, Seoul National University, 1, Gwanak-ro, Gwanak-gu, 08826, Republic KoreaMore by Dong-Min Kimhttp://orcid.org/0000-0003-0676-8208, Sung Chul JungSung JungDepartment Physics, Pukyong Busan 48513, Jung, Seongmin HaSeongmin HaSchool Ha, Youngjin KimYoungjin...
Abstract The implementation of high‐nickel layered oxide cathodes in lithium‐ion batteries is hampered by the inherent issues formation NiO‐like rock‐salt phase as well residual lithium (e.g., LiOH, LiHCO 3 , and Li 2 CO ) on surface. To overcome challenges, here a rational strategy presented interdiffusion‐based surface reconstruction via dry coating design principles for identifying optimum ions LiNi 0.91 Mn 0.03 Co 0.06 O (NMC91) cathode. Notably, combined approach theoretical screening,...
Abstract In order to reduce cost and increase energy density, it is critical eliminate cobalt nickel content in practical LiNi 1− x − y Mn Co O 2 (NMC) Al (NCA) cathodes. However, the implementation of cobalt‐free, high‐nickel layered oxide cathodes lithium‐ion batteries (LIBs) hindered by inherent issue high surface reactivity with electrolyte microcrack formation during cycling. Herein, origin key parameters for microstructural engineering cobalt‐free LiNiO (LNO) comprehensively...
Formation of the solid electrolyte interphase (SEI) on hard carbon electrode significantly influences performance batteries, in terms cycle performance, calendar life, and power characteristics. In sodium-ion batteries (SIBs), energetically inferior SEI formation mechanism, compared with lithium-ion (LIBs), results a thin, thermally vulnerable, less passivating electrode. Notably, for SIBs have higher lowest unoccupied molecular orbital (LUMO) energy level Na-solvated ethylene carbonate...
Interfacial architectures based on the FEC + TMSP binary additive prevent formation of Na<sub>15</sub>Sn<sub>4</sub> with severe volume expansion and electrolyte decomposition.
We clarified the failure mechanism of Li–O<sub>2</sub>batteries with a redox mediator.
Thanks to the advantages of low cost and good safety, magnesium metal batteries get limelight as substituent for lithium ion batteries. However, energy density state-of-the-art is not high enough because their operating potential; thus, it necessary improve by developing new high-voltage cathode materials. In this study, nanosized Berlin green Fe2(CN)6 Prussian blue Na0.69Fe2(CN)6 are compared materials Interestingly, while Mg2+ ions cannot be intercalated in Fe2(CN)6, shows reversible...