▎ 摘　　要

NOVELTY - Cathode composition for solid-state battery comprises conductive carbon(s), elemental sulfur, additive(s) and metal organic compound which is a complex of ruthenium and piperine. The composition further comprises an anode, and solid electrolyte(s). The battery has a discharge capacity in the range of 1700-2100 mAh/g at a discharge rate of 1/30 degrees C. The conductive carbons are ketjen black, acetylene black, Vulcan XC-72 (RTM: Conductive carbon black), multi-walled carbon nanotubes, single-walls carbon nano-tube, and/or few-layer graphene. The additive is lithium-phosphorus-containing compound (I) or lithium-germanium containing compound (II). USE - The composition is useful for solid-state battery, preferably all-solid-state lithium sulfur batteries (ASSLSBs) used in large scale electric vehicles, portable devices, and stationary applications. ADVANTAGE - The ruthenium-piperine complex improves the kinetics of the octasulfur and lithium sulfide reaction by facilitating complete conversion of octasulfur molecule. With proper milling and dispersion of elemental sulfur with conductive ketjen black carbon material, high sulfur utilization rates are achieved. It exhibits improved charge and discharge capacities. An all-solid-state lithium sulfur battery fabricated with the cathodic composition shows a significant increase of up to 3-5 times in high energy density storage capacity which far exceeds the energy storage capacities of existing ASSLSBs. The battery shows a high discharge capacity of 1700-2100 mAh/g at a very low discharge rate of 1/30C which protects the cell from potential damage. The raw materials required for the preparation of the cathode composition are abundantly available and the process. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for solid-state battery comprising the cathode composition. DESCRIPTION OF DRAWING(S) - The figure depicts scheme of formation of ruthenium-piperine complex from ruthenium salt and piperine.