A5102907092- Advanced Battery Materials and Technologies
- Advancements in Battery Materials
- Advanced Battery Technologies Research
- Thermal Expansion and Ionic Conductivity
- Advanced battery technologies research
- Extraction and Separation Processes
- Solid-state spectroscopy and crystallography
- Recycling and Waste Management Techniques
Yonsei University
2021-2024
Hanyang University
2019-2020
Abstract Two newly emerging materials for application in all‐solid‐state batteries, namely, single‐crystalline Ni‐rich layered oxide cathode and halide solid electrolyte (SE), are of utmost interest because their superior properties (good microstructural integrity excellent electrochemical oxidation stability, respectively) to conventional polycrystalline oxides sulfide SEs. In this work, four electrodes employing single‐ or LiNi 0.88 Co 0.11 Al 0.01 O 2 (NCA) Li 3 YCl 6 PS 5 Cl 0.5 Br...
Abstract While Ni‐rich cathode materials combined with highly conductive and mechanically sinterable sulfide solid electrolytes are imperative for practical all‐solid‐state Li batteries (ASLBs), they suffer from poor performance. Moreover, the prevailing wisdom regarding use of Li[Ni,Co,Mn]O 2 in conventional liquid electrolyte cells, that is, increased capacity upon Ni content, at expense degraded cycling stability, has not been applied ASLBs. In this work, effect overlooked but dominant...
Abstract A stable interfacial design bridging Li metal and sulfide solid electrolytes is imperative for deploying practical all‐solid‐state batteries. Despite the extensive exploration of interlayer materials, including inorganic substances, lithiophilic metals, their composites, a comprehensive understanding stability chemo‐mechanical evolution, particularly those influenced by cell fabrication processes, remains unexplored. Herein, it meticulously investigate formation evolution LiF, Mg,...
Abstract Silicon (Si) anodes, free from the dendritic growth concerns found in lithium (Li) metal offer a promising alternative for high‐energy all‐solid‐state batteries (ASSBs). However, most advancements Si anodes have been achieved under impractical high operating pressures, which can mask detrimental electrochemo‐mechanical issues. Herein, we effectively address challenges related to low‐pressure operation of ASSBs by introducing an silver (Ag) interlayer between solid electrolyte layer...
Abstract Owing to an absence or lack of soft (and/or liquid) components, electrochemo‐mechanical effects are imperative for all‐solid‐state batteries (ASBs) based on inorganic solid electrolytes (SEs). As this aspect has been overlooked, relevant investigation remained scarce. In work, the development a new operando differential electrochemical pressiometry (DEP) ASBs is reported. The time‐ (or capacity‐) derivative pressure signals ( dP/dt dP/dQ ) reflecting corresponding volume changes...
Abstract Polymeric binders that can undergo slurry fabrication and minimize the disruption of interfacial Li + contact are imperative for sheet‐type electrodes solid electrolyte films in practical all‐solid‐state batteries (ASLBs). Although dry polymer electrolytes (DPEs) a plausible alternative, their use is complicated by severe reactivity sulfide need to dissolve salts. In this study, new scalable protocol ‐conductive DPE‐type binder, nitrile‐butadiene rubber (NBR)‐LiTFSI, reported. The...
Interfacial degradation of Li6PS5Cl (LPSCl) with oxide cathode materials during cycling, particularly the formation interfacial voids, leads to poor electrochemical performance. The these voids is driven by two distinct mechanisms: volumetric changes cycling and shrinkage LPSCl due oxidative decomposition. However, relative contribution each route void remains ambiguous, especially for nanostructured materials. This study highlights predominant influence decomposition on LiCoO2 surface in...
Abstract The liquid‐phase synthesis (LS) of sulfide solid electrolytes (SEs) has promising potential for mass production practical all‐solid‐state Li batteries (ASLBs). However, their accessible SE compositions are mostly metal‐free. Moreover, liquid‐phase‐synthesized‐SEs (LS‐SEs) suffer from high electronic conductivity due to carbon impurities, resulting in below‐par electrochemical performance ASLBs. Here, the LS highly deformable and air‐stable 3+x P 1‐x Sn x S 4 (0.19 mS cm −1 ) using...
The growing demand for vehicle electrification and sophisticated energy storage systems is driving research into lithium-ion batteries (LIBs) with high density. Employing inorganic materials as solid electrolytes (SEs) presents a compelling strategy to enhance the density safety profile of these batteries. Nonetheless, integration Li metal anodes (LMAs) in all-solid-state (ASSBs) still dendrite issues, without specific protective layers like C-Ag, cycle stability remains challenge. In...
All-Solid-State Batteries In article number 2203292 by Yoon Seok Jung and co-workers report on a liquid-phase synthesis of highly deformable air-stable sulfide solid electrolyte for solid-state batteries. Marginal organic residues at the nanoscale liquid-phase-derived Sn-substituted Li3PS4 remarkably enhance deformability, resulting in excellent electrochemical performance Li[Ni,Co,Mn,]O2electrodes, particularly when tailored low fabricating pressure or tested under operating pressure.
All-solid-state Li or Li-ion batteries (ASLBs) have been emerged as a promising alternative battery to address the safety concerns and limited energy densities for conventional lithium-ion (LIBs). Particularly, deformable sulfide solid electrolyte (SE) materials are able be integrated with electrode active into bulk-type ASLBs by simple cold-pressing process. Moreover, + conductivities of several SEs in order 10 -2 S cm -1 . Unfortunately, performances resulting operating at room temperature...
Due to the nonflammability of inorganic solid electrolytes (SEs) and wide operation temperature ranges, bulk-type all-solid-state lithium or lithium-ion batteries (ASLBs) have been emerged as a promising power source. In particular ASLBs using sulfide SEs, such Li 10 GeP 2 S 12 (LGPS, 1.2 × -2 cm -1 ) 3 P 7 11 (1.7 ), are attractive because extremely high ionic conductivities SE materials, which comparable those conventional organic liquid used for batteries. For success practical ASLBs,...