Ionic and Electronic Conductivities of Lithium Argyrodite Li6PS5Cl Electrolytes Prepared via Wet Milling and Post-Annealing

Lithium argyrodite Li6PS5Cl powders are synthesized from Li2S, P2S5, and LiCl via wet milling and post-annealing at 500°C for 4 h. Organic solvents such as hexane, heptane, toluene, and xylene are used during the wet milling process. The phase evolution, powder morphology, and electrochemical properties of the wet-milled Li6PS5Cl powders and electrolytes are studied. Compared to dry milling, the processing time is significantly reduced via wet milling. The nature of the solvent does not affect the ionic conductivity significantly; however, the electronic conductivity changes noticeably. The study indicates that xylene and toluene can be used for the wet milling to synthesize Li6PS5Cl electrolyte powder with low electronic and comparable ionic conductivities. The all-solid-state cell with the xylene-processed Li6PS5Cl electrolyte exhibits the highest discharge capacity of 192.4 mAh·g−1 and a Coulombic efficiency of 81.3% for the first discharge cycle.

Nanocellulose-based mechanically stable immobilization matrix for enhanced ethylene production: A framework for photosynthetic solid-state cell factories

Cell immobilization is a promising approach to create efficient photosynthetic cell factories for sustainable chemicals production. Here, we demonstrate a novel photosynthetic solid-state cell factory design for sustainable biocatalytic ethylene...

Engineering Frenkel defects of anti-perovskite solid-state electrolytes and their applications in all-solid-state lithium-ion batteries

Fluorinated lithium-rich anti-perovskite (F-LiRAP) is proposed to enhance lithium ion conductivity by creating Frenkel defects and an all-solid-state cell configuration based on F-LiRAP is successfully demonstrated.

Enhancing performance of sandwich-like cobalt sulfide and carbon for quasi-solid-state hybrid electrochemical capacitors

A hybrid electrochemical capacitor can sustain 100% initial capacitance after 2000 cycles in an alkaline electrolyte. In the case of a quasi-solid-state cell, it can deliver an energy density of 30 W h kg−1at a specific power of 1742 W kg−1.

Experimental and first-principles DFT study on the electrochemical reactivity of garnet-type solid electrolytes with carbon

The decomposition of garnet Li7La3Zr2O12 during the charge process can proceed via a reaction with a carbon additive in a solid-state cell.

Energy harvesting from humidity changes with a flexible coaxial electrode solid-state cell

A measurable Gibbs free energy is obtained in a coaxial electrode cell from concentration gradients induced by changes in the relative humidity.