SECONDARY BATTERY AND METHOD OF MANUFACTURING SECONDARY BATTERY

A secondary battery includes a case and an electrode assembly accommodated in the case. The electrode assembly includes a first electrode, a separator, and a second electrode. An insulating member is positioned between the electrode assembly and the case. The first electrode includes a pair of first double layers each including a first substrate and a first coating layer disposed on the first substrate, and a first center substrate positioned between the pair of first double layers. The second electrode includes a pair of second double layers each including a second substrate and a second coating layer disposed on the second substrate, and a second center substrate positioned between the pair of second double layers.