A5008508640- Advanced Battery Materials and Technologies
- Advancements in Battery Materials
- Hydrogen Storage and Materials
- Electrocatalysts for Energy Conversion
- Fuel Cells and Related Materials
- Advanced battery technologies research
- Ammonia Synthesis and Nitrogen Reduction
- Advanced Battery Technologies Research
- Rare-earth and actinide compounds
- Layered Double Hydroxides Synthesis and Applications
- Magnetic Properties of Alloys
- Advanced Condensed Matter Physics
- Conducting polymers and applications
- Ionic liquids properties and applications
- Magnetic and transport properties of perovskites and related materials
- Electrochemical Analysis and Applications
- Supercapacitor Materials and Fabrication
- Thermal Expansion and Ionic Conductivity
- Electronic and Structural Properties of Oxides
- Multiferroics and related materials
- Hybrid Renewable Energy Systems
- Extraction and Separation Processes
- X-ray Diffraction in Crystallography
- Inorganic Chemistry and Materials
- Corrosion Behavior and Inhibition
National Institute of Advanced Industrial Science and Technology
2011-2023
Kyoto University
2019-2021
Ikeda Municipal Hospital
2018
University of Yamanashi
2015-2016
Centre for Research in Engineering Surface Technology
2014
Japan Science and Technology Agency
2012-2014
Ubiquitous Energy (United States)
2004-2010
Osaka Prefecture University
1998-2003
Abstract Rechargeable potassium-ion batteries have been gaining traction as not only promising low-cost alternatives to lithium-ion technology, but also high-voltage energy storage systems. However, their development and sustainability are plagued by the lack of suitable electrode materials capable allowing reversible insertion large potassium ions. Here, exploration database for potassium-based has led us discover ion conducting layered honeycomb frameworks. They show capability ions at...
Substoichiometric titanium oxide -supported Pt catalysts were prepared and their electrochemical properties, particularly the effects of high-potential conditions on activity stability catalysts, compared to those catalyst. Polarization measurements using membrane electrode assemblies revealed that cathode shows a similar for oxygen reduction reaction as catalyst at . A holding test ( vs anode) demonstrated is quite stable against high potential up single cell was operated , voltage with...
Using sodium, instead of lithium, in rechargeable batteries is a way to circumvent the lithium's resource problem. The challenge find an electrode material that can reversibly undergo redox reactions sodium-electrolyte at desired electrochemical potential. We proved indigo carmine (IC, 5,5'-indigodisulfonic acid sodium salt) work as positive-electrode not only lithium-, but also sodium-electrolyte. discharge capacity IC-electrode was ~100 mAh g(-1) with good cycle stability either Na or Li...
The world is at the cusp of a new era where pivotal importance being attached to development sustainable and high-performance energy storage systems. Potassium-ion batteries are deemed not only as cheap battery candidates, but also penultimate high-voltage systems within monovalent-cation chemistries. However, their performance sustainability undermined by lack suitable electrolytes for operation particularly due limited availability cathode materials. Here, potential ionic liquids based on...
Electrochemically active lithium sulfide–carbon composite positive electrodes, prepared by the spark plasma sintering process, were applied to all-solid-state secondary batteries with a glass electrolyte. The electrochemical tests demonstrated that cells showed initial charge and discharge capacities of ca. 1010 , respectively, which higher capacity coulombic efficiency (ca. 91%) than nonaqueous liquid electrolytes 27%, respectively). ex situ S K-edge X-ray absorption fine structure...
The performance of 5,7,12,14-pentacenetetrone (PT) as an organic active material for rechargeable lithium batteries was investigated. A positive-electrode incorporating PT showed initial discharge capacity more than 300 mAh/g(PT) with average voltage 2.1 V vs. Li+/Li. obtained corresponded to a four-electron redox behavior and is twice that conventional material, cobalt oxide (LiCoO2). quantum calculation based on the density functional theory (DFT) also performed clarify mechanism...
The morphology of electrodeposited lithium in room-temperature ionic liquids was investigated by ex situ SEM observations, and the dependence distribution nuclei on current density discussed with respect to lithium-ion diffusion coefficient. It concluded that deposits are better distributed a decreased size when is increased range where deposition charge-transfer controlled. Under larger at which controlled, dendritic observed, although well over large area. so ions slower than ion...
Abstract The potential capability of an organic positive-electrode active material for rechargeable magnesium batteries was investigated. 2,5-Dimethoxy-1,4-benzoquinone (DMBQ), which is known to work as a in the lithium system, examined. DMBQ electrode showed discharge capacity 260 mA h g(DMBQ)−1 and average voltage 0.9 V versus quasi-reference electrode. charged discharged reversibly with Mg2+ ions several cycles.
The designing of high voltage cathode materials is critical for the advancement potassium-ion (K-ion) battery. Herein, we present a new honeycomb framework P2-type K2/3Ni1/3Co1/3Te1/3O2 (or equivalently written as K2NiCoTeO6) which exhibits highest on record (beyond 4 V versus K+/K) layered materials. This work will allow further development of, particularly, cathodes K-ion
A novel 3D metal-organic framework with predesigned cubic building blocks and 1D open channels exhibiting significant N2 adsorption has been synthesized characterized by single crystal X-ray diffraction analysis.
Abstract The performance of indigo carmine (5,5′-indigodisulfonic acid sodium salt) as a positive-electrode material for rechargeable lithium batteries was investigated. prepared electrode showed an initial discharge capacity 110 mA h g−1, which corresponds to two-electron-redox behavior. Furthermore, the shown have good cycle-life stability.
FeS2-Li2S composite positive electrode material, consisted of mainly Li3Fe2S4 and Li2.33Fe0.67S2, was prepared for improving the cycle capability FeS2 in rechargeable lithium batteries with liquid electrolytes operated at ambient temperature. The electrochemical tests demonstrated that cells showed a relatively higher capacity retention after 15 cycles (ca. 64%) as compared 26%), though both sample comparable initial discharge capacities 740 790 mAh·g−1 (4.2 4.5 mAh·cm−2), respectively)....
We examined three sulfone-based electrolyte solutions for use in rechargeable magnesium batteries; i.e., sulfolane (SL), ethyl-i-propyl sulfone (EiPS) and di-n-propyl (DnPS), which was dissolved 0.5 mol L−1 bis(trifluoromethanesulfonyl)amide (Mg(TFSA)2). The specific conductivities of these Mg-electrolyte were 1–2 mS cm−1 at 30°C. These thermally stable < 250°C, electrochemically 2 V vs. Mg reference electrode (Mg wire). In solutions, an organic positive made 2,5-dimethoxy-1,4-benzoquinone...