公开(公告)号：JP2001172418A

公开(公告)日：2001-06-26

申请号：JP2000029556

申请日：2000-02-07

Applicant: KOREA ELECTRONICS TELECOMM

Inventor： RYU KOZEN ,  KIN KOMAN ,  KYO SEIKYU ,  CHO SHUNKO

IPC: C08J7/04 ,  B32B7/02 ,  C08J5/18 ,  C08L65/00 ,  C08L79/00 ,  H01B1/12

Abstract: PROBLEM TO BE SOLVED: To provide a method for producing a conductive polymer film having excellent processability. SOLUTION: This method for producing the conductive polymer film is characterized by comprising a first process for dissolving a lithium salt in an organic solvent, a second process for gradually adding and dissolving a conductive polymer in the lithium salt-dissolved organic solvent obtained in the first process to obtain a dark blue solution, a third process for coating the dark blue solution obtained in the second process on a flat plate in a constant thickness, and a fourth process for drying the solvent contained in the solution coated in the third process. Since the conductive polymer film can directly be obtained from the solution by the present method, the conductive polymer film can not only be processed into a thin film but also be adjusted to an arbitrary thickness, if necessary. Since the conductivity of the film can further be adjusted by changing the kind and concentration of a salt to be used, the conductive polymer film can be applied to various fields in response to the purposes of use, such as electronic parts or electric parts.

公开(公告)号：JPH11250912A

公开(公告)日：1999-09-17

申请号：JP36494998

申请日：1998-12-22

Applicant: KOREA ELECTRONICS TELECOMM

Inventor： KYO SEIKYU ,  CHO SHUNKO ,  CHO KIKO ,  RYU KOZEN

IPC: C01G49/00 ,  C01B31/02 ,  H01M4/505 ,  H01M4/525 ,  H01M10/05 ,  H01M10/052 ,  H01M10/0565 ,  H01M10/0566 ,  H01M4/58 ,  H01M4/02 ,  H01M10/40

Abstract: PROBLEM TO BE SOLVED: To provide a lithium secondary battery having a cathode material with less capacity loss in a high voltage (5 volt) region and excellent cycle characteristics and provide a manufacturing method of an oxide for the cathode material. SOLUTION: A lithium secondary battery has a cathode made of lithium-iron- manganese oxide (LiFex Mn2-x O4 , 0

公开(公告)号：JPH11176444A

公开(公告)日：1999-07-02

申请号：JP21285498

申请日：1998-07-28

Applicant: KOREA ELECTRONICS TELECOMM

Inventor： KYO SEIKYU ,  CHO SHUNKO ,  CHO KIKO

IPC: C01G45/12 ,  C01B31/02 ,  H01M4/505 ,  H01M10/05 ,  H01M10/052 ,  H01M10/0565 ,  H01M10/0566 ,  H01M4/58 ,  H01M4/02 ,  H01M10/40

Abstract: PROBLEM TO BE SOLVED: To provide a battery having superior capacity and performance in high voltage area by subjecting the lithium oxide to heat treatment, the chrome oxide and the manganese oxide for a specified time in a specified temperature area, and thereafter, gradually cooling them so as to form a specified compound. SOLUTION: Heat treatment is conducted in a temperature area at 730-760 deg.C for 40-50 hours, and thereafter gradual cooling is performed to form a compound having a formula LiCrx Mn2-x O4 (0