A Study on Characterization of Polyethylene Separators Irradiated at Various Electron Beam Current Conditions

作者：Im Jong Su; Sohn Joon Yong; Shin Junhwa; Lim Youn Mook; Choi Jae Hak; Kim Jeong Soo; Nho Young Chang^*

来源：Polymer-Korea, 2010, 34(1): 74-78.

• separator
• thermal shrinkage
• electron beam
• lithium secondary battery

In this paper, crosslinked polyethylene (PE) separators for lithium secondary batteries were prepared by an electron beam irradiation under various beam currents and close rates. The crosslinking degree increased up to maximum 71% with an increasing absorption dose and with a decreasing beam current. The PE separators irradiated at lower beam currents showed better thermal shrinkage (51%) and mechanical properties than the original PE separator and PE separators irradiated at higher beam current. The ionic conductivity (1.01 x 10(-3) S/cm) and electrolyte uptake (275%). of the crosslinked PE separators were comparable to the original PE separator.

• 出版日期2010-1