No abstract

The local structure phase diagram of (Li2S)x(P2S5)100−x thiophosphates derived from pair distribution function crystallization experiments.

As a confinuation of a report published in 1963, recent results in the field of allyl-transition metal complexes are described[*]. Syntheses and reactions of these compounds, as well as the bonding between metal and allyl group, are discussed. Allyl-transition metal complexes form the basis of extremely selective catalysts for homogeneous reactions of 1,3-diolefins and of olefns; the metal atoms in these "matrix" catalysts are either "bare" [**I or are bound to only a few ligands.

Rechargeable solid-state lithium ion batteries (SSLB) require fast ion conducting solid electrolytes (SEs) to enable high charge and discharge rates. Li 7 P 3 S 11 is a particularly promising lithium solid electrolyte, exhibiting very high room temperature conductivities of up to 17 mS• cm −1 and high ductility, allowing fast ion transport through the bulk and intimate contact to high surface electrodes. Here we present a novel hot-press setup that facilitates the synthesis of solid electrolytes by combining in situ electrochemical impedance spectroscopy (EIS) with simultaneous temperature-and pressure-monitoring. While a high room temperature conductivity in the order of 10 mS•cm −1 is readily achieved for phase pure Li 7 P 3 S 11 with this design, it further enables monitoring of the different steps of crystallization from an amorphous Li 2 S−P 2 S 5 glass to triclinic Li 7 P 3 S 11 . Nucleation, crystallization andat temperatures exceeding 280 °Cdecomposition of the material are analyzed in real time, enabling process optimization. The results are supported ex situ by means of X-ray diffraction, X-ray photoelectron spectroscopy, scanning electron microscopy and Raman spectroscopy. Proof-of-principle experiments show the promising cycling-and rate capability of Li 0.3 In 0.7 /Li 7 P 3 S 11 /S-composite all-solid-state batteries. It is furthermore presented that discharging below a limit of 1.2 V results in decomposition of the SE/cathode interface.