A battery separator comprises micro porous membrane and coating on it. The coating is made of mixture containing gel forming polymer, and two solvents. The first solvent is more volatile than the second solvent. The second solvent is used to form pores in ...

Disclosed is an electrolyte capable of obtaining an excellent quality of electrolyte, and a battery using the electrolyte. A battery device in which a positive electrode and a negative electrode are stacked with a separator being interposed therebetween is...

The present invention provides a nonaqueous electrolyte secondary cell having a construction wherein a flat spiral-shaped electrode assembly, in which positive and negative electrodes capable of intercalating and deintercalating lithium ions are wound with...

The present invention provides an electrode production method for producing an electrode including a rectangular electrode carrier (12) and a gel electrolyte film (13) formed on the electrode carrier and having a width greater than the electrode carrier. T...