Progress in soft and stretchable electronics depends on energy sources that are mechanically compliant, elastically deformable, and renewable. Energy harvesting using triboelectric nanogenerators (TENGs) made from soft materials provides a promising approach to address this critical need. Here, an elastomeric composite is introduced with sedimented liquid metal (LM) droplets for TENG‐based energy harvesting that relies on assembly of the LM to form phase‐separated conductive and insulating regions. The sedimented LM elastomer TENG (SLM‐TENG) exhibits ultrahigh stretchability (strain limit
The growing demand for energy in wearable sensors and portable electronics necessitates the development of self‐contained, sustainable, and mobile power sources capable of harvesting environmental energies. Researchers have made significant strides in implementing photovoltaics, thermoelectrics, piezoelectrics, and triboelectrics in 2D materials. This has resulted in significant advancements in wearable energy harvesting systems based on 2D materials. This review discusses the relationship between synthesis procedures, material structures/properties, and device performance in the context of 2D materials‐based wearable energy harvesting technologies. Finally, challenges and future research opportunities are identified and discussed based on current progress.
more » « less- Award ID(s):
- 1762698
- PAR ID:
- 10371168
- Publisher / Repository:
- Wiley Blackwell (John Wiley & Sons)
- Date Published:
- Journal Name:
- Advanced Materials Technologies
- Volume:
- 7
- Issue:
- 9
- ISSN:
- 2365-709X
- Format(s):
- Medium: X
- Sponsoring Org:
- National Science Foundation
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Abstract > 500% strain), skin‐like compliance (modulus< 60 kPa), reliable device stability (> 10 000 cycles), and appreciable electrical output performance (max peak power density= 1 mW cm−2). SLM‐TENGs can be integrated with highly elastic stretchable fabrics, thereby enabling broad integration with wearable electronics. A stretchable and wearable SLM‐TENG is demonstrated that harvests energy from human motion through a patch attached to the knee or integrated into exercise clothing. This body‐mounted TENG device can generate enough electricity to fully power a wearable computing device (hygro‐thermometer with digital display) after 2.2 min of running on a treadmill. -
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