A5076327760- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Advanced Battery Materials and Technologies
- Advancements in Battery Materials
- Solid-state spectroscopy and crystallography
- Inorganic Chemistry and Materials
- Advanced Battery Technologies Research
- Inorganic Fluorides and Related Compounds
- Iron-based superconductors research
- Advanced battery technologies research
- Organoboron and organosilicon chemistry
- Synthesis and characterization of novel inorganic/organometallic compounds
- Catalytic Cross-Coupling Reactions
- Chemical Synthesis and Characterization
- Rare-earth and actinide compounds
University of Alberta
2021-2025
Sulfide- and halide-based ceramic ionic conductors exhibit comparable conductivity with liquid electrolytes are candidates for high-energy- high-power-density all-solid-state batteries. These materials, however, inherently brittle, making them unfavorable applications. Here, we report a mechanically enhanced composite Na+ conductor that contains 92.5 wt % of sodium thioantimonate (Na3SbS4, NSS) 7.5 carboxymethyl cellulose (CMC); the latter serves as binder an electrochemically inert...
The ternary rare-earth sulfides RE2SnS5 (RE = La–Nd) and the partial solid solutions RE2Sn(S1–xSex)5 La, Ce; x 0–0.8) were prepared in form of polycrystalline samples by reaction elements at 900 °C as single crystals presence KBr flux. They adopt La2SnS5-type structure (orthorhombic, space group Pbam, Z 2) consisting chains edge-sharing SnCh6 octahedra separated RE atoms. Although cell parameters evolve smoothly RE2Sn(S1–xSex)5, detailed structural analysis single-crystal X-ray diffraction...
Ternary Li-containing halides have gained significant interest for all-solid-state batteries because they show high Li-ion conductivity, and their structures can be modified. In this study, halogen substitution in Li3InCl6 was attempted to form Li3InCl6–xXx (X = F, Br, I) samples whose phase compositions Li+ conductivity were characterized by X-ray diffraction impedance spectroscopy. Based on the evolution of cell parameters, Cl substituted completely F within experimental limit x ≤ 1.2,...
Tungsten-substituted Na3SbS4 shows enhanced ionic conductivity but the role of sintering treatments is not well understood. The effects on Na3–xSb1–xWxS4 were examined and found to slightly increase solubility W, reduce voids, possibly contact area. Changes in phase composition morphology play a key performance electrolytes.
Sodium thioantimonate (Na3SbS4) and its W-substituted analogue Na2.88Sb0.88W0.12S4 have been identified as potential electrolyte materials for all-solid-state sodium batteries due to their high Na+ conductivity. Ball milling mechanochemistry is a frequently employed synthetic approach produce such Na+-conductive solid solutions; however, changes in the structure morphology introduced these systems via process are poorly understood. Herein, we combined X-ray absorption fine spectroscopy,...
Replacing liquid electrolytes with solid ionic conductors attracts increasing attention due to the potential of improved battery safety. Solid-state batteries show for further increased energy/power density by eliminating use packaging accessories unit cells. Sulfide- and halide-based ceramic exhibit comparable conductivity electrolytes. These materials, however, are inherently brittle, making them unfavorable applications. Here, we report a mechanically enhanced composite Na+ conductor that...
The synthesis, characterization and reactivity studies of the NHC-stabilized complex IDipp ⋅ GeH
Sulfur based solid-state Na + conductors exhibit high ionic conductivity and are promising candidates for electrolytes used in the next generation all-solid-state sodium-ion batteries. Sodium thioantimonate (Na 3 SbS 4 ), example, shows an of 1 mS/cm, comparable to its liquid counterparts. In contrast well-known thiophosphate electrolytes, is chemically stable dry air. However, Na-ion batteries assembled using as electrolyte show a decaying performance over charge discharge cycles. This work...