Polymer electrolyte and lithium battery employing the same

A lithium battery comprising:

• a cathode;
• an anode;
• and a polymer electrolyte interposed between the cathode and the anode and including a polyester (meth)acrylate having a polyester polyol moiety having three or more hydroxide (—OH) groups, at least one hydroxde group being substituted by a (meth)acrylic ester group and at least one hydroxide group being substituted by a radical non-reactive group, or its polymer;
• a peroxide having 6 to 40 carbon atoms;
• and
• an electrolytic solution including a lithium salt and an organic solvent.

A method for manufacturing a lithium battery, comprising the operations of:

• mixing polyester (meth)acrylate having a polyester polyol moiety having three or more hydroxide (—OH) groups, at least one hydroxde group being substituted by a (meth)acrylic ester group and at least one hydroxide group being substituted by a radical non-reactive group, a peroxide having 6 to 40 carbon atoms, and an electrolytic solution including a lithium salt and an organic solvent, to form a solid polymer electrolyte composition;
• coating the composition on a support substrate and stripping the composition from the support substrate, to form a polymer electrolyte;
• forming a cathode and an anode;
• injecting the polymer electrolyte between the cathode and the anode to form an electrode assembly;
• and
• putting the electrode assembly into a battery case.

A method for manufacturing a lithium battery, comprising the operations of:

• mixing polyester (meth)acrylate having a polyester polyol moiety having three or more hydroxide (—OH) groups, at least one hydroxde group being substituted by a (meth)acrylic ester group and at least one hydroxide group being substituted by a radical non-reactive group, a peroxide having 6 to 40 carbon atoms, and an electrolytic solution including a lithium salt and an organic solvent, to form a solid polymer electrolyte composition;
• forming a cathode, an anode and a separator;
• interposing the separator between the cathode and the anode to form an electrode assembly;
• putting the assembly into a battery case;
• and
• injecting the polymer electrolyte composition into the battery case.