A5078831050- Advanced Battery Materials and Technologies
- Advancements in Battery Materials
- Advanced Battery Technologies Research
- Thermal Expansion and Ionic Conductivity
- Inorganic Chemistry and Materials
- Polyoxometalates: Synthesis and Applications
- Supercapacitor Materials and Fabrication
- Conducting polymers and applications
Korea Electronics Technology Institute
2019-2024
Abstract The state-of-the-art all-solid-state batteries have emerged as an alternative to the traditional flammable lithium-ion batteries, offering higher energy density and safety. Nevertheless, insufficient intimate contact at electrode-electrolyte surface limits their stability electrochemical performance, hindering commercialization of batteries. Herein, we conduct a systematic investigation into effects shear force in dry electrode process by comparing binder-free hand-mixed pellets,...
Abstract Voids are widely disseminated in a powder when mixed, and hence the typical dry‐electrode preparation method yields sparse because external pressure applied to surface of mixed is not evenly distributed. Consequently, particle cracking void remnants appear electrode after calendaring. This study introduces practically applicable bi‐functionalized additive simultaneously reinforce chemo‐mechanical properties millimeter‐thick dry electrodes. The agyrodite Li 6 PS 5 Cl solid...
Halide solid electrolytes (SEs) have been highlighted for their high-voltage stability. Among the halide SEs, ionic conductivity has improved by aliovalent metal substitutions or choosing a ccp-like anion-arranged monoclinic structure (C2/m) over hcp- bcc-like structures. Here, we present new approach, hard-base substitution, and its underlying mechanism to increase of SEs. The oxygen substitution Li2ZrCl6 (trigonal, hcp) increased from 0.33 1.3 mS cm–1 at Li3.1ZrCl4.9O1.1 (monoclinic, ccp),...
This study validates the beneficial role of residual Li compounds on surface Ni-rich cathode materials (LiNixCoyMnzO2, NCM). Residual NCM are naturally formed during synthesis procedure, which degrades initial Coulombic efficiency and generates slurry gelation electrode fabrication in Li-ion batteries (LIBs) using liquid electrolytes. To solve this problem, washing pretreatment is usually introduced to remove surface. In contrast LIBs, we found that can serve as a functional layer suppresses...
All-solid-state batteries (ASSBs), which utilize non-flammable solid electrolytes, are increasingly recognized as a promising next-generation technology. ASSBs expected to offer superior safety compared conventional lithium-ion while enabling...
A potential solid electrolyte for realizing all-solid-state battery (ASB) technology has been discovered in the form of Li10 GeP2 S12 (LGPS), a lithium superionic conductor with high ionic conductivity (≈12 mS cm-1 ). Unfortunately, achievable Li+ LGPS is limited sheet-type composite electrode owing to porosity this structure. For practical implementation LGPS, it crucial control pore structures electrode, as well interfaces between active materials and solid- particles. Herein, addition an...
All-solid-state batteries employing inorganic solid electrolytes are considered a promising next-generation energy storage system. Especially, argyrodite-type Li6PS5Cl (LPSCl) was highlighted for its good ionic conductivity and malleability. In the electrode level, achieving an efficient Li+ pathway even with maximized active material proportion mass loading is vital high density. Therefore, smaller electrolyte particle highly sought for. Herein, we demonstrated spiral jet mill process...
The Front Cover shows the robust design of a composite electrode in which an ionic liquid is utilized as pore filler, thereby, enabling high-performance all-solid-state battery. Using pore-filler improves contact area between cathode materials and solid-electrolyte particles minimizes overpotential at interfaces. Based on conventional fabrication process, proposed battery exhibits comparable electrochemical performance to lithium-ion batteries room temperature. This can provide practical...
An all-solid-state battery (ASSB) is now accepted as one of promising next-generation rechargeable batteries, since it has a potential to solve the chronic anxiety safety issue in current liquid-electrolyte-based lithium-ion (LIB) well achieve higher energy density. Of various solid electrolytes for ASSB, sulfide-based are regarded more suitable bulk-type ASSB because its high conductivity and appropriate mechanical properties such ductile modulus; It allows processes slurry-based sheet...
Lithium ion batteries have received great attention due to emerging electric vehicle market suppress global climate change issues. Batteries with higher energy density is required improve driving distance of vehicle. As increase, safety become more important point prevent unexpected accident. Safety issues current lithium battery system mainly comes from the oxide cathode and flammable organic electrolyte. All solid state non-flammable inorganic electrolytes come into limelight its potential...