Korea Institute of Science and Technology

Other

Lg Chem, Ltd

Sangwon Enc Co.

Ho In Lee

Jae Chul Lee

Suk Woo Nam

Tae Hoon Lim

In Hwan Oh

Heung Yong Ha

Seong Ahn Hong

Hyun Kwang Seok

Ji Young Byun

Gi Man Kim

Hyoung Sik Choi

Don Soo Shin

Bong Gil Kim

Dong Soo Baik

Hyeun Bum Jo

Hyeung Dae Moon

Byong Jo Kim

The present disclosure provides a tray for storing battery cells, in which a plurality of storage plates having at least one battery cell stored therein are loaded by being stacked in one direction, the tray including a pressing device configured to press one end portion or both end portions of the storage plates with respect to a direction in which the storage plates are stacked in the tray so that the battery cells are stored in the storage plate without clearance from the storage plate.

Tray for storing battery cells including a pressing device

An internal reforming molten carbonate fuel cell having a membrane for intercepting carbonate vapor and hydrated vapor is disclosed. The intercepting membrane is made from nickel or nickel alloy which has a high electrical conductivity, corrosion resistant property in an anode environment, and a low affinity for the carbonate vapor. Due to the presence of the intercepting membrane, the transfer of the carbonate vapors and hydrated vapors to the internal reforming catalyst is markedly retarded to prolong the catalytic activity. As a result, a longer operating molten carbonate fuel cell can be obtained.

Internal reforming molten carbonate fuel cell with membrane for intercepting carbonate vapor

The process uses hydrochloric acid solutions to extract zinc from electric arc furnace dusts containing zinc oxide and zinc ferrite. To selectively leach zinc and minimize iron dissolution by precipitating as FeO.OH and Fe O , hot acid leaching with the aqueous solution containing 37 g/l-74 g/l HCl and 104 g/l-270 g/l ZnCl is used. New dust is introduced to remove iron from the filtrate of the hot acid leaching. The zinc chloride solutions purified by activated carbon and metallic zinc powder is electrolysed in electrowinning cells which had cation exchange membrane to produce high purity zinc metal and to regenerate hydrochloric acid. Electrolysing an aqueous solution of zinc chloride with Zn concentration of 50-130 g/litre below 40&deg; C. in a cell divided by cation exchange membrane, whereby coherent zinc is yielded at the cathode with high current efficiency of exceeding 90%. HCl is directly regenerated with a very small loss below 2% and low energy consumption below 5.0 kWh/kg-Zn during Zn-electrodeposition at a cathodic current density in the range of 300-2000 A/m , and a membrane current density in the range of 750-2000 A/m . The spent electrolyte with 1-2N HCl is used to leach the residue in the hot acid leaching vessel.

Hydrometallurgical method for recovery of zinc from electric arc furnace dust

A process for manufacturing an Al&mdash;Si alloy for use in a vehicle propeller shaft is provided. The Al&mdash;Si alloy manufacturing process includes the steps of heating and melting Al&mdash;Si alloy where Si contains 13-40 weight percentage (wt %) of the whole alloy, to thereby prepare melt, maintaining the melt at 700-900&deg; C. and then spraying an high pressure inert gas to the melt and rapidly solidifying the same to thereby obtain a forming body, and extruding the forming body at 400-550&deg; C. The physical properties of the Al&mdash;Si alloy manufactured by a spray forming process is at least similar to that of the vehicle propeller shafts which have been already known, and also spotlighted as new alloy compositions which can replace the conventional propeller shaft material.

Process for manufacturing AL-Si alloys for use in vehicle propeller shafts

The present invention provides a thixoformable Al alloy composites wherein Si is added to ASTM 2000 series aluminum alloy so that the total Si content thereof may be 1-5 at. % and also a manufacturing method of thixoformable Al alloy composites comprising: obtaining a matrix of the composite containing 1-5 at. % of the total Si content by adding Si to ASTM 2000 series aluminum alloy; holding the matrix in the temperature range of 560-610.degree. C. to obtain a liquid fraction of 40-70% and thereafter performing a thixoforming process.

Thixoformable SiC/2xxx Al composites

Growing community of inventors

Seoul, South Korea

Ho In Lee