Abstract
Textiles that are capable of harvesting biomechanical energy via triboelectric effects are of interest for self-powered wearable electronics. Fabrication of conformable and durable textiles with high triboelectric outputs remains challenging. Here we propose a washable skin-touch-actuated textile-based triboelectric nanogenerator for harvesting mechanical energy from both voluntary and involuntary body motions. Black phosphorus encapsulated with hydrophobic cellulose oleoyl ester nanoparticles serves as a synergetic electron-trapping coating, rendering a textile nanogenerator with long-term reliability and high triboelectricity regardless of various extreme deformations, severe washing, and extended environmental exposure. Considerably high output (~250–880 V, ~0.48–1.1 µA cm−2) can be attained upon touching by hand with a small force (~5 N) and low frequency (~4 Hz), which can power light-emitting diodes and a digital watch. This conformable all-textile-nanogenerator is incorporable onto cloths/skin to capture the low output of 60 V from subtle involuntary friction with skin, well suited for users’ motion or daily operations.
Highlights
Textiles that are capable of harvesting biomechanical energy via triboelectric effects are of interest for self-powered wearable electronics
Kim et al further showed that reduced graphene oxide (RGO) and molybdenum disulfide (MoS2) serve as efficient triboelectric electron–acceptor layers in negative friction materials for enhancing the electricity output of Triboelectric nanogenerators (TENGs), which is attributed to effective charge capture in the RGO or MoS2 layer, suppressing the loss of generated triboelectric electrons[31,32]
The foremost triboelectric fabric (HBP-fabric) was realized on polyethylene terephthalate (PET) fabric with successive coating of Black phosphorus (BP) and hydrophobic cellulose oleoyl ester nanoparticles (HCOENPs), which was designed as a durable triboelectric electron–acceptor layer to synergistically enhance the electricity output of TENG
Summary
Textiles that are capable of harvesting biomechanical energy via triboelectric effects are of interest for self-powered wearable electronics. Textile is a more promising candidate for realizing comfortable wearable electronics since excellent deformability and breathability make it compatible for incorporation with our daily clothes[21,22,23,24,25,26,27,28,29] These wearable generators are constructed by a dual-electrodes mode that operates based on the friction of adjacent fibers/yarns or face-to-face fabrics with coating of different synthetic polymers or metallic patterns that often lead to poor breathability and low comfort. The designs enable sensitivity even for subtle motions, the increased contact and friction between the fibers/yarns impart wear and tear, especially with strongly repetitive mechanical pulses, humidity or light exposed environments, leading to some important concerns about the degradation and lifetime of TENGs. Textiles are an ideal substrate, but achieving a durable textilebased TENG (textile-TENG) with high performance for harvesting energy from both voluntary and involuntary body motions with different frequency remains challenging. Applications of BP are challenged by a fast degradation on exposure to ambient conditions, especially for the few-layer BP37
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
