English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

Simultaneous study of magnetic and electrocatalytic properties of cobaltitesunder extreme conditions expands understanding of physical and chemicalprocesses proceeding in them with the possibility of their further practicalapplication. Therefore, La0.6Sr0.4CoO3 (LSCO) nanopowders have been synthesizedat different annealing temperatures tann = 850, 875, 900 C, and theirmultifunctional properties have been studied comprehensively. As tannincreases, the rhombohedral perovskite structure of the LSCO becomes moresingle-phase, whereas average particle size and dispersion grow. Co ions are inmixed valence states, including major Co3+ and Co4+ components. It has beenfound that the LSCO-900 shows two main Curie temperatures, TC1 and TC2,associated with a particle size distribution. As an external hydrostaticpressure P increases, average <TC1> and <TC2> increase from 253 and 175 K underambient pressure to 268 and 180 K under P = 0.8 GPa, respectively. At the sametime, the antiferromagnetic temperature TAFM and blocking temperature TB alsoincrease from 145 and 169 K to 158 and 170 K, respectively. The increment of<dTC/dP> for the smaller and bigger particles is sufficiently high and equals10 and 13 K/GPa, respectively. The magnetocaloric effect in the LSCO-900nanopowder is relatively weak but with an extremely wide peak > 50 K that makesthis composition interesting to be used as one of the components of thecomposite expanding its working temperature window. Moreover, all LSCO samplesshowed excellent electrocatalytic performance for the overall water splitting(OER) process (overpotentials only 265-285 mV at a current density of 10mA/cm2) with minimal values for LSCO-900. Based on the XPS data, it was foundthat the formation of a dense amorphous layer on the surface of the particlesensures high stability as a catalyst (at least 24 h) during electrolysis in 1 MKOH electrolyte.

The multifunctionality of lanthanum-strontium cobaltite nanopowder: high-pressure magnetic and excellent electrocatalytic properties for OER