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Silk and Silk Composite Aerogel-Based Biocompatible Triboelectric Nanogenerators for Efficient Energy Harvesting
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2020-06-09 , DOI: 10.1021/acs.iecr.0c01117 Hao-Yang Mi 1, 2 , Heng Li 3 , Xin Jing 2 , Ping He 4 , Pei-Yong Feng 2 , Xiaoming Tao 5 , Yuejun Liu 2 , Chuntai Liu 1 , Changyu Shen 1
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2020-06-09 , DOI: 10.1021/acs.iecr.0c01117 Hao-Yang Mi 1, 2 , Heng Li 3 , Xin Jing 2 , Ping He 4 , Pei-Yong Feng 2 , Xiaoming Tao 5 , Yuejun Liu 2 , Chuntai Liu 1 , Changyu Shen 1
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Triboelectric nanogenerators (TENGs) with high performance and biocompatibility are of demand for the development of novel medical devices and wearable electronics. Herein, a highly porous silk aerogel-based TENG (STENG) with high output performance was developed using silk fibroins extracted from silk cocoons. The silk aerogel made of 2% silk fibroin solution showed a nanofibrillated porous structure and the highest surface area, which contributed to the high triboelectric output performance of the STENG based on it. The rough surface and highly porous structure facilitated charge generation of the aerogels. The optimized STENG achieved an open circuit voltage of 52.8 V and a short circuit current of 5.2 μA, and a maximum power density of 0.37 W/m2 was reached on a 1 MΩ external resistor. The STENG possesses high stability under different operation frequencies and in long term, and it could act as a power source for small electronics. Moreover, the excellent biocompatibility of silk aerogels to human cells makes the STENG possible to be used as implantable energy harvesters. In addition, because of its high tribopositivity, silk can be used as additives to fabricate composite aerogels. With an addition of 20% silk, the power of cellulose nanofibril-based TENGs improved by 3.1 times.
中文翻译：
丝绸和丝绸基于气凝胶的生物相容性摩擦生电纳米发电机，用于高效的能量收集
高性能和生物相容性的摩擦电纳米发电机（TENGs）是对新型医疗设备和可穿戴电子设备的开发的需求。在此，使用从蚕茧中提取的蚕丝纤维蛋白，开发了具有高输出性能的高多孔性的基于气凝胶的TENG（STENG）。由2％丝素蛋白溶液制成的丝状气凝胶显示出纳米原纤化的多孔结构和最大的表面积，这有助于基于它的STENG的高摩擦电输出性能。粗糙的表面和高度多孔的结构促进了气凝胶的电荷产生。经过优化的STENG实现了52.8 V的开路电压和5.2μA的短路电流，以及0.37 W / m 2的最大功率密度通过一个1MΩ的外部电阻达到。STENG在不同的工作频率下具有长期稳定性，并且可以长期用作小型电子设备的电源。此外，丝绸气凝胶与人体细胞的优异生物相容性使STENG可用作植入式能量收集器。另外，由于其高摩擦正性，丝可以用作制造复合气凝胶的添加剂。添加20％的丝绸，纤维素纳米原纤维基TENG的功效提高了3.1倍。
更新日期：2020-07-08
中文翻译：
丝绸和丝绸基于气凝胶的生物相容性摩擦生电纳米发电机，用于高效的能量收集
高性能和生物相容性的摩擦电纳米发电机（TENGs）是对新型医疗设备和可穿戴电子设备的开发的需求。在此，使用从蚕茧中提取的蚕丝纤维蛋白，开发了具有高输出性能的高多孔性的基于气凝胶的TENG（STENG）。由2％丝素蛋白溶液制成的丝状气凝胶显示出纳米原纤化的多孔结构和最大的表面积，这有助于基于它的STENG的高摩擦电输出性能。粗糙的表面和高度多孔的结构促进了气凝胶的电荷产生。经过优化的STENG实现了52.8 V的开路电压和5.2μA的短路电流，以及0.37 W / m 2的最大功率密度通过一个1MΩ的外部电阻达到。STENG在不同的工作频率下具有长期稳定性，并且可以长期用作小型电子设备的电源。此外，丝绸气凝胶与人体细胞的优异生物相容性使STENG可用作植入式能量收集器。另外，由于其高摩擦正性，丝可以用作制造复合气凝胶的添加剂。添加20％的丝绸，纤维素纳米原纤维基TENG的功效提高了3.1倍。
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