Design and synthesis of triboelectric polymers for high performance triboelectric nanogenerators

Abstract

Triboelectric polymer materials are the essential element for triboelectric nanogenerator (TENG). Designing and synthesizing strategy of triboelectric polymers is the foundation for improving the performance of TENG and the related...

Recent Progress of Solid–Liquid Interface-Mediated Contact-Electro-Catalysis

“…In 2012, Wang et al harnessed the phenomenon of CE to introduce the triboelectric nanogenerator (TENG), which converts mechanical energy into electricity. This pioneering development has subsequently led to various applications in micro/nano power sources, self-powered sensors, , blue energy, high-voltage power sources, etc. Moreover, TENG devices have emerged as a distinctive tool for an in-depth exploration of the physical mechanisms behind CE, since they also allow direct measurements of surface charge density. , Notably, Chen et al used TENG to investigate the charge transfer associated with temperature changes during CE, where an electron cloud potential well model was successfully utilized to understand related fundamental principles.…”

Acid-Doped Pyridine-Based Polybenzimidazole as a Positive Triboelectric Material with Superior Charge Retention Capability

“…This charge escape is due to the air breakdown, interfacial discharges, molecular neutralization in the atmosphere, and so on . Exploring positive materials with ultrastrong charge retention capability to couple with corona-polarized electrets is crucial to suppressing charge decay. , …”

“…8−13 Therefore, the development of the intrinsic charge density for triboelectric materials is fundamental and inevitable and can also help these strategies to achieve further enhancements. Previously, stateof-the-art strategies such as surface modification, 14,15 chemical design, 16 repeated rheological modeling, 17 and inorganic filler composites 18−21 have been proposed to elevate the charge density of negative materials. Particularly, corona-polarized electret polymers such as fluorinated ethylene propylene (FEP) and polytetrafluoroethylene (PTFE) can provide a static charge density of up to several mC m −2 .…”

“…25 Exploring positive materials with ultrastrong charge retention capability to couple with corona-polarized electrets is crucial to suppressing charge decay. 16,26 Currently, commonly used positive materials are polymers with strong electron-donating ability, such as nylon, cellulose, and so on. It is noteworthy that the electron-donating capacity of a positive material is not equal to the charge retention ability for inhibiting the escape of polarized charges.…”

“…A triboelectric nanogenerator (TENG) is an extremely promising technology for energy conversion and self-powered sensor, while the intrinsic charge density of triboelectric materials is a key and unavoidable parameter for TENG applications. − To enhance the TENG output, external strategies such as a charge pumping/excitation strategy can be effective for energy-harvesting applications after an initial excitation process, − but this is not universally applicable and is inconvenient for other applications such as triboelectric catalysis and self-powered sensors. − Therefore, the development of the intrinsic charge density for triboelectric materials is fundamental and inevitable and can also help these strategies to achieve further enhancements. Previously, state-of-the-art strategies such as surface modification, , chemical design, repeated rheological modeling, and inorganic filler composites − have been proposed to elevate the charge density of negative materials. Particularly, corona-polarized electret polymers such as fluorinated ethylene propylene (FEP) and polytetrafluoroethylene (PTFE) can provide a static charge density of up to several mC m –2 . ,− Unfortunately, most of the corona-polarized charges decay rapidly during the contact process and only a very small portion can contribute to the TENG output .…”