Publications by authors named "S Sainio"
Article Synopsis
- Soft chemistry techniques like ion exchange can create new battery electrode materials that traditional synthesis methods can't stabilize.* -
- This study examines how lithium (Li) and sodium (Na) ions interact and exchange in a specific type of lithium-layered oxide cathode, showing that Li intercalation occurs first but leads to phase separation as Na begins to enter.* -
- The research reveals that this ion exchange results in a mixed-phase cathode, which impacts its reaction speed and has potential benefits for renewable energy technology and ion separation methods.*
Diamond as a templating substrate is largely unexplored, and the unique properties of diamond, including its large bandgap, thermal conductance, and lack of cytotoxicity, makes it versatile in emergent technologies in medicine and quantum sensing. Surface termination of an inert diamond substrate and its chemical reactivity are key in generating new bonds for nucleation and growth of an overlayer material. Oxidized high-pressure high temperature (HPHT) nanodiamonds (NDs) are largely terminated by alcohols that act as nucleophiles to initiate covalent bond formation when an electrophilic reactant is available.
View Article and Find Full Text PDFMetastable compounds have greatly expanded the synthesizable compositions of solid-state materials and have attracted enormous amounts of attention in recent years. Especially, mechanochemically enabled metastable materials synthesis has been very successful in realizing cation-disordered materials with highly simple crystal structures, such as rock salts. Application of the same strategy for other structural types, especially for non-close-packed structures, is peculiarly underexplored.
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- Ether-based solvents can effectively formulate ion-solvent cointercalation electrolytes for Na-ion and K-ion batteries, despite previous concerns about graphite exfoliation in Li-ion batteries.
- By developing a specific electrolyte, 1M LiBF in 1,2-dimethoxyethane, the researchers achieved high efficiency (about 91% initial Coulombic efficiency) and capacity retention (>88%) over 400 cycles in natural graphite.
- The study provides insights into the unique behavior of the electrolyte and pseudo-solid-electrolyte interphase (SEI) formation through experimental and simulation techniques, paving the way for enhanced understanding and application of ether-based electrolytes in various battery types.
Background: Prehospital low-titer group O whole blood (LTOWB) used for patients with life-threatening hemorrhage is often RhD positive. The most important complication following RhD alloimmunization is hemolytic disease of the fetus and newborn (HDFN). Preceding clinical use of RhD positive LTOWB, we estimated the risk of HDFN due to LTOWB prehospital transfusion in the Finnish population.
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