Triboelectric Nanogenerators Based on Composites of Zeolitic Imidazolate Frameworks Functionalized with Halogenated Ligands for Contact and Rotational Mechanical Energy Harvesting.

Triboelectric nanogenerator (TENG) based on the coupling effect of triboelectrification and electrostatic induction can convert mechanical motions into electric energy. Recent studies have found that metal-organic framework materials are promising triboelectric materials due to their large surface area and excellent tunability. In this study, we incorporated isostructural zeolitic imidazolate frameworks, ZIF-8-X (X = CH, Br, Cl), into poly(vinylidene fluoride) (PVDF) electrospun fibers and assembled them in TENG devices to investigate the underlying relationship between functional group electronegativity (via varied imidazolate linkers) and triboelectric output performance.