Page 135 - 《精细化工》2020年第1期

第 1 期 程晓琪，等: 蚕丝/聚氧化乙烯复合固态聚合物电解质 ·121·

生长并防止电池发生短路危险。 3 结论

（1）以天然蚕丝为刚性结构，将 PEO 和锂盐浇
铸在蚕丝上，制备 Silk-PEO-SPE 隔膜。制得的复合
固态电解质与原始的 PEO-SPE 相比有着优异的机
械强度和电化学窗口，拉伸强度达到 10 MPa，电化
–4
学窗口达到 4.6 V，60 ℃时电导率为 3.20×10 S/cm。
（2）将 Silk-PEO-SPE 隔膜与正极片、锂片在手
套箱中组装成全固态纽扣式电池，60 ℃下具有良好
的倍率性能和较好的充/放电性能，在 0.2、0.5、1.0、
2.0、3.0 C 电流密度下放电比容量达到 157、152、
116、24、5 mA∙h/g。并且，在 1.0 C 的电流密度下
表现出优异的循环性能，在 100 次的循环后，放电
比容量依然能达到 113 mA∙h/g，容量保持率达到
97%，具有较好的应用前景。

参考文献：
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赋予电池较好的循环稳定性。 （下转第 167 页）