Abstract: Disclosed is a method of manufacturing a lithium secondary battery. A polymer mixture including a) polyvinylidene fluoride-based polymer and b) at least one polymer selected from the group consisting of polyacrylonitrile and polymethyl methacrylate is mixed with a solvent in which a lithium salt is dissolved. The mixing ratio of the polymer mixture and the solvent is about 1:3-10. Thus obtained first mixture is heated to obtain a polymer electrolyte composition. And this polymer electrolyte composition is coated onto a first electrode which is one of an anode and a cathode, and then dried to obtain a polymer electrolyte layer. Then, a second electrode which is a remaining one of the anode and cathode is attached onto the polymer electrolyte layer. The polymer electrolyte has a good mechanical strength and the lithium secondary battery has a stable charge/discharge characteristic.
Type:
Grant
Filed:
November 13, 2000
Date of Patent:
July 29, 2003
Assignee:
Ness Co., Ltd.
Inventors:
Hee Tak Kim, Jung Min Song, Sun Wook Kim
Abstract: An electroluminescent device comprising a transparent electrode layer, a metallic electrode layer, and an organic interlayer disposed between, and in close contact with, the electrode layers wherein the organic interlayer is comprised of an organic luminescent layer, an optional hole transport layer and an optional electron transport layer, and contains a polyimide of formula (I): 1
Abstract: An electric energy storage device includes a first electrode, a gel type ionic conducting polymer electrolyte separator formed on the first electrode, and a second electrode corresponding to the first electrode. The energy storage device has an increased unit storage capacitance and more minimized size by using the gel type ionic conducting polymer electrolyte separator. Also, the energy storage device produces a reduced resistance by the gel type ionic conducting polymer electrolyte separator, such that the high frequency response characteristic is improved, the available frequency region is enlarged and the allowable ripple current is increased.
Type:
Application
Filed:
February 16, 2001
Publication date:
October 18, 2001
Applicant:
Ness Co., Ltd.
Inventors:
Seong-Min Kim, Jin-Young Hong, Seok-Gyun Chang, Hyo-Rang Kang
Abstract: An electric energy storage device includes a first electrode, a gel type ionic conducting polymer electrolyte separator formed on the first electrode, and a second electrode corresponding to the first electrode. The energy storage device has an increased unit storage capacitance and more minimized size by using the gel type ionic conducting polymer electrolyte separator. Also, the energy storage device produces a reduced resistance by the gel type ionic conducting polymer electrolyte separator, such that the high frequency response characteristic is improved, the available frequency region is enlarged and the allowable ripple current is increased.
Type:
Application
Filed:
February 16, 2001
Publication date:
September 27, 2001
Applicant:
Ness Co., Ltd.
Inventors:
Seong Min Kim, Jin Young Hong, Seok Gyun Chang, Hyo Rang Kang
Abstract: A high contrast organic electroluminescent device has a transparent substrate, a transparent electrode layer, a metallic electrode layer, and an organic interlayer disposed between and in close contact with the electrode layers, the organic interlayer being comprised of an organic luminescent layer, an optional hole transport layer and an optional electron transport layer, wherein a dark conductive metal alloy layer is inserted between the organic interlayer and the metallic electrode layer.