PEO在聚合物锂离子电池中的应用

聚氧化乙烯（PEO）可与锂盐形成具有离子导电性的络合物，但PEO的高结晶性使其与锂盐构成的固体电解质在室温下电导率很低，不能满足实际应用要求，因此需对PEO基固体电解质进行改性。简介PEO的特点和离子传导机理，重点介绍提高PEO基固体电解质室温导电性能目前所采取的措施，包括形成共聚物、生成交联聚合物、掺杂复合物盐、加入增塑剂、加入无机填料和制备侧链含PEO链段高聚物。

Application of PEO in Polymer Lithium Ionic Batteries

Ion conductive complex can be obtained by polyethylene oxide(PEO) and lithium salt.The solid electrolyte formed by them is not applicable because PEO is highly crystallized polymer,conductivity of the solid electrolyte is very low at ambient temperature. Thus,PEO-based solid electrolyte must be modified.The properties of PEO,the mechanism of ion transfer in PEO are introduced briefly, and current some measures enhancing the electroconductivity of the solid electrolyte at ambient temperature are introduced emphatically. These measures include such methods as making co-polymer of PEO,linking PEO with cross-linking agent,blending composite salt in solid electrolyte,adding plasticizer,adding inorganic filler and preparing polymer with PEO segment in the side chain.