Flexible, multifunctional aerogel films based on PBO nanofibers and their application in wearable electronic devices
Flexible, multifunctional aerogel films based on PBO nanofibers and their application in wearable electronic devices
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DOI：
10.1016/j.electacta.2022.141802
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发表时间：
2022-12
影响因子：
6.6
通讯作者：
Shuai Yu;Wei Zhang;Jian An;Tao Wang;Hushun Ling;Tonghua Zhang;Lei Chen
中科院分区：
文献类型：
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作者：
Shuai Yu;Wei Zhang;Jian An;Tao Wang;Hushun Ling;Tonghua Zhang;Lei Chen
随着可穿戴电子设备的快速发展，对轻质、柔性、阻燃电子材料的需求不断增加。在此，采用溶胶-水凝胶-气凝胶转化方法制备了由聚（对亚苯基苯并二恶唑）纳米纤维（PBO-NF）和羧化碳纳米管（CCNT）组成的柔性多孔气凝胶薄膜。通过改变两种组分之间的比例，我们获得了满足我们不同要求的气凝胶薄膜。制备的PBO-NF/CCNT(10%)具有导电性、导电稳定性、超亲水性、透气性和阻燃性，可用作压力传感器。该传感器灵敏度高、检测范围广、响应时间短，可以监测多种生理活动。 Ni3(2,3,6,7,10,11-六亚氨基苯并菲)2(Ni3(HITP)2)在PBO-NF/CCNT(20%)上原位生长2小时后，所得PBO-NF/CCNT(20%)@Ni3(HITP)2(2h)的比电容比普通材料高78.9% PBO-NF/CCNT(20%)。 10000次循环后电容保持率高达94.4%。这种多功能气凝胶薄膜为可穿戴电子设备带来了巨大的前景。
With the rapid development of wearable electronic devices, there is an increasing demand for lightweight, flexible, and flame-retardant electronic materials. Herein, flexible and porous aerogel films composed of poly(p-phenylenebenzobisoxazole) nanofibers (PBO-NFs) and carboxylated carbon nanotubes (CCNTs) were prepared using a sol-hydrogel-aerogel conversion method. By changing the ratio between the two components, we obtained aerogel films that met our different requirements. The prepared PBO-NF/CCNT(10%), with conductivity, conductive stability, superhydrophilicity, breathability, and flame retardancy, could be used as a pressure sensor. The sensor exhibited high sensitivity, wide detection range, and short response time and could monitor various physiological activities. After thein situgrowth of Ni3(2,3,6,7,10,11-hexaiminotriphenylene)2(Ni3(HITP)2) onto PBO-NF/CCNT(20%) for 2 h, the specific capacitance of the resulting PBO-NF/CCNT(20%)@Ni3(HITP)2(2h) was 78.9% higher than that of PBO-NF/CCNT(20%). The capacitance retention rate was as high as 94.4% after 10,000 cycles. This multifunctional aerogel film holds great promise for wearable electronic devices.