Wang Jie, Li Shengming, Yi Fang, Zi Yunlong, Lin Jun, Wang Xiaofeng, Xu Youlong, Wang Zhong Lin
School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, USA.
Electronic Materials Research Laboratory, Key laboratory of the Ministry of Education &International Center of Dielectric Research, Xi'an Jiaotong University, Xi'an 710049, China.
Nat Commun. 2016 Sep 28;7:12744. doi: 10.1038/ncomms12744.
Harvesting biomechanical energy is an important route for providing electricity to sustainably drive wearable electronics, which currently still use batteries and therefore need to be charged or replaced/disposed frequently. Here we report an approach that can continuously power wearable electronics only by human motion, realized through a triboelectric nanogenerator (TENG) with optimized materials and structural design. Fabricated by elastomeric materials and a helix inner electrode sticking on a tube with the dielectric layer and outer electrode, the TENG has desirable features including flexibility, stretchability, isotropy, weavability, water-resistance and a high surface charge density of 250 μC m. With only the energy extracted from walking or jogging by the TENG that is built in outsoles, wearable electronics such as an electronic watch and fitness tracker can be immediately and continuously powered.
收集生物机械能是为可穿戴电子设备可持续供电的一条重要途径，目前这些设备仍使用电池，因此需要频繁充电或更换/处理。在此，我们报告一种仅通过人体运动就能持续为可穿戴电子设备供电的方法，该方法通过具有优化材料和结构设计的摩擦纳米发电机（TENG）得以实现。该TENG由弹性体材料以及粘贴在带有介电层和外电极的管子上的螺旋形内电极制成，具有柔韧性、可拉伸性、各向同性、可编织性、防水性以及250 μC m的高表面电荷密度等理想特性。仅利用外底内置的TENG从行走或慢跑中提取的能量，诸如电子手表和健身追踪器等可穿戴电子设备就能立即且持续地获得电力供应。
