Publications by authors named "Wanqing Jia"
Article Synopsis
- Solid-state potassium metal batteries are emerging as cost-effective and safe solutions for grid-scale energy storage but face challenges related to K-ion conductivity due to their larger ionic radius.
- Researchers have improved the ionic conductivity of the KMgSbO solid electrolyte to 1.6×10⁻⁶ S/cm at 25°C by optimizing its structure and phase heterogeneity, which aids K-ion movement.
- The enhanced quasi-solid-state potassium metal batteries exhibit impressive performance, with a lifespan exceeding 300 hours at 0.1 mA/cm and stability over 300 cycles, outperforming traditional liquid electrolyte batteries.
Oxide ceramics are considered promising candidates as solid electrolytes (SEs) for sodium metal batteries. However, the high sintering temperature induced boundaries and pores between angular grains lead to high grain boundary resistance and pathways for dendrite growth. Herein, we report a grain boundary modification strategy, which generates an amorphous matrix among NaSmSiO oxide grains via tuning the chemical composition.
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- Solid-state sodium metal batteries (SSBs) require solid electrolyte (SE) materials that have high ionic conductivity and good compatibility with electrodes for effective performance.
- The study introduces NaSmSiO SE, which shows remarkable room-temperature ionic conductivity (2.9 × 10 S cm) and a low activation energy (0.15 eV), resulting in exceptional cycling life and critical current density in battery applications.
- The outstanding performance is attributed to an electrochemically induced crystalline-to-amorphous transition that improves ionic transport and interfacial properties, leading to impressive cycling performance with zero capacity loss over 4000 cycles.
Selective removal of phenolic compounds (PCs) from de-oiled sunflower kernel is generally considered a key step for food applications, but this often leads to protein loss. PC removal yield and protein loss were assessed during an aqueous or aqueous ethanol washing process with different temperatures, pH-values and ethanol contents. PC yield and protein loss increased when the ethanol content was < 60% or when a higher temperature was applied.
View Article and Find Full Text PDFA β-galactosidase preparation from Bacillus circulans consists of four isoforms called β-gal-A, β-gal-B, β-gal-C, and β-gal-D. These isoforms differ in lactose hydrolysis and galacto-oligosaccharide (GOS) synthesis at low substrate concentrations. For this reason, using a selection of the isoforms may be relevant for GOS production, which is typically done at high substrate concentrations.
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