A5025057776- Advanced Battery Materials and Technologies
- Advancements in Battery Materials
- Advanced Battery Technologies Research
- Ionic liquids properties and applications
- Conducting polymers and applications
- Advanced battery technologies research
- Crystallization and Solubility Studies
- Extraction and Separation Processes
- X-ray Diffraction in Crystallography
- Chemical Synthesis and Characterization
- Polyoxometalates: Synthesis and Applications
- Inorganic Chemistry and Materials
- Nanomaterials for catalytic reactions
- Layered Double Hydroxides Synthesis and Applications
- Aerosol Filtration and Electrostatic Precipitation
- Supercapacitor Materials and Fabrication
- CO2 Reduction Techniques and Catalysts
- Carbon Dioxide Capture Technologies
- Metal and Thin Film Mechanics
- Electrochemical Analysis and Applications
- Engineering Applied Research
- Advanced Surface Polishing Techniques
- Cavitation Phenomena in Pumps
- Advanced ceramic materials synthesis
Osaka University
2022-2025
Yokohama National University
2018-2025
Deakin University
2024
Hodogaya Chemical (Japan)
2019
Aisin (United States)
2014
Recent studies have suggested that a Li ion hopping or ligand- anion-exchange mechanism is largely involved in conduction of highly concentrated liquid electrolytes. To understand the determining factors for hopping/exchange dominant such systems, ionic diffusion behavior and coordination structures electrolytes composed lithium bis(fluorosulfonyl)amide (Li[FSA]) keto ester solvents with two carbonyl coordinating sites increasing intramolecular distance (methyl pyruvate (MP), methyl...
Interfacially-localized high-concentration electrolytes were developed using an anionic surfactant and a magnesium( ii ) salt to achieve selective Li ion transport, high electrochemical stability superior SEI formation in aqueous electrolytes.
The spectral response at the interface between lithium-containing ionic liquid electrolyte and a gold film electrode was investigated using electrochemical attenuated total reflection spectroscopy in far-ultraviolet infrared regions.
Herein, distinct differences in Li-deposition/dissolution reversibility were found sulfolane (SL)-based electrolytes, depending on the Li-salt species and their solvation structures, owing to changes composition nature of solid-electrolyte interphase (SEI) Li-deposit morphology. For this purpose, two lithium salts, bis(trifluoromethanesulfonyl)amide (Li[TFSA]) bis(fluorosulfonyl)amide (Li[FSA]) selected. Relatively low-concentration electrolytes (1 mol dm–3, LCEs), high-concentration (∼3...
Polymer-in-salt electrolytes were introduced three decades ago as an innovative solution to the challenge of low Li-ion conductivity in solvent-free solid polymer electrolytes. Despite significant progress, approach still faces considerable challenges, ranging from a fundamental understanding development suitable polymers and salts. A critical issue is maintaining both stability high molten salts within matrix, which has constrained their further exploration. This research offers promising...
Electrolytes with a high Li-ion transference number (tLi) have attracted significant attention for the improvement of rapid charge-discharge performance batteries (LIBs). Nonaqueous polyelectrolyte solutions exhibit tLi upon immobilization anion on polymer backbone. However, transport properties and solvation in these media are not fully understood. Here, we investigated Li salt weakly coordinating polyanion, poly[(4-styrenesulfonyl)(trifluoromethanesulfonyl)amide] (poly(LiSTFSA)), various...
Water can be an attractive solvent for Li-ion battery electrolytes owing to numerous advantages such as high polarity, nonflammability, environmental benignity, and abundance, provided that its narrow electrochemical potential window enhanced a similar level of typical nonaqueous electrolytes. In recent years, significant improvements in the stability aqueous have been achieved with molten salt hydrate containing extremely concentrations Li salt. this study, we investigated effect divalent...
Poly(ethylene oxide) (PEO)-based solid polymer electrolytes (SPEs) are among the most promising materials for solid-state lithium metal batteries (LMBs) due to their inherent safety advantages; however, they suffer from insufficient room-temperature ionic conductivity (up 10–6 S cm–1) and limited oxidation stability (<4 V). In this study, a novel "polymer-in-high-concentrated liquid (IL)" (PiHCIL) electrolyte composed of PEO, N-propyl-N-methylpyrrolidinium bis(fluorosulfonyl) imide...
Na metal is a promising anode material for the preparation of next-generation high-energy-density sodium-ion batteries; however, high reactivity severely limits choice electrolyte. In addition, rapid charge-discharge battery systems require electrolytes with Na-ion transport properties. Herein, we demonstrate stable and high-rate sodium-metal enabled by nonaqueous polyelectrolyte solution composed weakly coordinating polyanion-type salt,...
Electrochemical separation methods utilizing quinones as CO2 capture agents have gained considerable interest owing to their low-energy requirements for near-isothermal separation. However, the low solubility of in nonaqueous solvents limits total carrying capacity system. In this study, we synthesized an ionically modified anthraquinone, 1-butyl-3-((2′-anthraquinoyl)methyl)imidazolium bis(trifluoromethanesulfonyl)amide ([BAQMIM][TFSA]), which exhibited a 360-fold increase compared pristine...
<title>Abstract</title> Polymer-in-salt electrolytes offer a promising solution to the critical challenge of low Li-ion conductivity in solvent-free solid polymer electrolytes. One crucial aspect their development is maintaining good stability and high molten salts within system. Remarkably, cationic poly(ionic liquids) (polyIL) have emerged as option. The salt concentration polyIL not only helps enhance ionic but also pushes charge carrier ion transference number beyond 0.5. Nevertheless,...
Poly(ethylene oxide)─(PEO-based solid polymer electrolytes (SPEs) are regarded as excellent candidates for solid-state lithium metal batteries (SSLMBs) due to their inherent safety advantages, processability, low cost, and Li+ ion solvation. However, they suffer from limited oxidation stability (up 4 V vs Li+/Li). In this study, a crosslinked polymer-in-concentrated ionic liquid (PCIL) SPE consisting of PEO, N-propyl-N-methylpyrrolidinium bis(fluorosulfonyl)imide (C3mpyrFSI) (IL), (LiFSI)...
Abstract Since aqueous lithium‐ion batteries (LIBs) were first proposed, electrolyte design has been intensively studied. We report a simple anionic surfactant, i. e., lithium dodecyl sulfate (LiDS)‐based electrolyte, capable of enhancing the Li ion transport properties in bulk and protecting electrode at interface. The self‐assembly DS anions into micelles effectively limited anion diffusion, enabling nearly single Li‐ion conduction electrolyte. interfacial adsorption molecules formed...
For the rapid charge-discharge performance of Li-ion batteries (LIBs), ionic conductivity (σ) and Li ion transference number (t+) are important parameters electrolytes. Electrolytes with high t+ alleviate concentration polarization upon fast charge-discharge, prevent diffusion-limited mass transfer Li+ ions. Recent studies have suggested that certain highly concentrated electrolytes exhibit better rate performances than conventional organic despite their lower σ. However, relationship...
Abstract Water‐in‐salt electrolytes have been widely explored because of their expanded electrochemical stability (>3.0 V). However, the instability solid‐electrolyte interphase (SEI) in aqueous leads to reductive decomposition on negative electrodes low‐potential anode materials. Here, we demonstrate significant improvement cycle performance a Li 4 Ti 5 O 12 electrode using Li−Ca binary salt hydrate (LCH) electrolyte combination with an optimized pretreatment process. Compared...
In the case of strength design ceramic parts, it is important to consider residual stress. The purpose this study solve some problems related such stress in ceramics.The on Si3N4 surface prepared with several different treatments was measured by X-ray technique using a prototype Vanadium tube. V-radiation suitable for getting strong diffraction profile at high angle and shallow effective penetration depth Si3N4. A new method developed Yoshioka et al. employed analysis. analysis, just...
Poly(ethylene oxide) (PEO) based solid polymer electrolytes (SPEs) are one of the most promising materials for solid-state lithium metal batteries (LMBs) due to their inherent safety advantages, however, they suffer from insufficient room temperature ionic conductivity (up 10−6 S cm−1) and limited oxidation stability (< 4V). In this study, a novel “polymer-in-high concentrated liquid” (PiHCIL) electrolyte composed PEO, N-propyl-N-methylpyrrolidinium bis(fluorosulfonyl) imide (C3mpyrFSI)...
PEO-based solid polymer electrolytes (SPEs) are regarded as excellent candidates for solid-state lithium metal batteries (LMBs) due to their inherent safety advantages, processability, low cost and Li ion solvation. However, they suffer from limited oxidation stability (up 4 V vs. Li+/Li). In this study, a newly designed crosslinked polymer-in-concentrated ionic liquid (PCIL) SPE consisting of PEO, C3mpyrFSI LiFSI is developed. The adopted UV-crosslinking strategy synergistically reduces PEO...
Solid polymer electrolytes (SPEs) have emerged as promising candidates for solid-state lithium metal batteries (LMBs) due to their inherent safety advantages and potential facilitate high energy density devices [1]. Poly(ethylene oxide) (PEO) has been the most prominent representative host in SPEs since 1970s because of excellent ability solvate Li ions support ion transport [2,3]. However, it suffers from limited oxidation stability (<4 V vs. Li) low ambient temperature conductivity (up...
To achieve fast charging and discharging of Li-ion batteries, it is important to improve the ionic conductivity ( σ ) electrolyte as well transference number t Li [1] . While nonaqueous polyelectrolyte solutions exhibit high number( = 0.81) upon immobilization anion on a polymer backbone, 1.3 mS cm -1 inferior that conventional electrolytes (σ ~10 ). One reasons for low dissociation degree caused by counter-ion condensation backbone. gain an insight into design strategy polyelectrolyte-based...