Nan Ce-Wen, Fan Lizhen, Lin Yuanhua, Cai Qiang
State Key Lab of New Ceramics and Fine Processing, and Department of Materials Science and Engineering, Tsinghua University, Beijing 100084, China.
Phys Rev Lett. 2003 Dec 31;91(26 Pt 1):266104. doi: 10.1103/PhysRevLett.91.266104.
We report a new kind of polyethlene oxide (PEO)-Li based composite polymer electrolyte containing active nanocomposite particles with ethylene carbonate (EC)/propylene carbonate (PC) plasticizers embedded in mesoporous SiO2 (EC/PC-SiO2). A very large enhancement of the ionic conductivity was observed for the PEO-Li/(EC/PC-SiO2) electrolytes. This could be attributed mainly to conducting EC/PC nanochannels in the active nanocomposite particles. This unique mechanism is absent in currently known nanocomposite polymer electrolytes with inert oxide nanoparticles. Both high ionic conductivity and excellent stability of such new nanocomposite polymer electrolytes potentially makes it one of the most promising electrolyte materials.
我们报道了一种新型的基于聚环氧乙烷（PEO）-锂的复合聚合物电解质，其包含活性纳米复合颗粒，其中碳酸亚乙酯（EC）/碳酸丙酯（PC）增塑剂嵌入介孔二氧化硅（EC/PC-SiO2）中。对于PEO-锂/（EC/PC-SiO2）电解质，观察到离子电导率有非常大的提高。这主要可归因于活性纳米复合颗粒中的导电EC/PC纳米通道。目前已知的含有惰性氧化物纳米颗粒的纳米复合聚合物电解质中不存在这种独特机制。这种新型纳米复合聚合物电解质兼具高离子电导率和优异稳定性，这可能使其成为最有前景的电解质材料之一。
