LITHIUM ION POLYMER BATTERY AND METHOD OF PRODUCING THE SAME
The lithium ion polymer battery includes: a positive electrode that includes at least a positive electrode material which is capable of desorbing lithium ions when the battery is charged; and a negative electrode which includes a current collector and an ionic conductive polymer layer which is provided on the current collector.
1 . A lithium ion polymer battery comprising:
a positive electrode that includes at least a positive electrode material which is capable of desorbing lithium ions when the battery is charged; and
a negative electrode which includes a current collector and an ionic conductive polymer layer which is provided on the current collector.
2 . The lithium ion polymer battery according to claim 1 ,
wherein the positive electrode material is a carbon-coated positive electrode active material which includes
core particles, and
a carbonaceous film with which surfaces of the core particles are coated,
wherein the core particles being formed of a positive electrode active material represented by formula Li x A y D z PO 4 (where A represents at least one selected from the group consisting of Co, Mn, Ni, Fe, Cu, and Cr, D represents at least one selected from the group consisting of Mg, Ca, Sr, Ba, Ti, Zn, B, Al, Ga, In, Si, Ge, Sc, and Y, 0.9<x<1.1, 0<y≤1, 0≤z<1, and 0.9<y+z<1.1).
3 . The lithium ion polymer battery according to claim 2 ,
wherein A in formula Li x A y D z PO 4 represents Fe.
4 . The lithium ion polymer battery according to claim 1 ,
wherein the ionic conductive polymer layer includes
an ionic conductive polymer, and
a lithium salt,
wherein the ionic conductive polymer being formed of polyethylene oxide, a copolymer having a polyethylene oxide structure, ethylene oxide, a copolymer having an ethylene oxide structure, or a derivative thereof.
5 . A method of producing a lithium ion polymer battery, the method comprising:
forming a battery member by bonding a positive electrode that includes at least a positive electrode material capable of desorbing lithium ions when the battery is charged and a negative electrode that includes an ionic conductive polymer layer to each other;
removing water from the battery member at least once before sealing the battery member; and
sealing the battery member in a low water environment after removing water from the battery member.