Improving consistency at testing cementitious materials in the Dynamic Surface Leaching Test on the basis of the European technical specification CEN/TS 16637-2 - Results of a round robin test.

The environmental impact assessment of materials is usually based on laboratory tests, mostly in combination with models describing the longterm fate of the substances of interest in the targeted environmental compartment. Thus, laboratory tests are the fundamental link to achieve appropriate assessment conclusions which makes it essential to generate consistent results. This just as applies to the leaching of cementitious materials.

Fast Ionic Conductivity in the Most Lithium-Rich Phosphidosilicate LiSiP.

Solid electrolytes with superionic conductivity are required as a main component for all-solid-state batteries. Here we present a novel solid electrolyte with three-dimensional conducting pathways based on "lithium-rich" phosphidosilicates with ionic conductivity of σ > 10 S cm at room temperature and activation energy of 30-32 kJ mol expanding the recently introduced family of lithium phosphidotetrelates. Aiming toward higher lithium ion conductivities, systematic investigations of lithium phosphidosilicates gave access to the so far lithium-richest compound within this class of materials.

Synthesis and Characterization of the Lithium-Rich Phosphidosilicates LiSiP and LiSiP.

The lithium phosphidosilicates LiSiP and LiSiP are obtained by high-temperature reactions of the elements or including binary Li-P precursors. LiSiP (P2/n, Z = 2, a = 7.2051(4) Å, b = 6.