Revealing the conductivity stability of 2D Cu-MOFs as flexible electrodes: demonstration of triboelectric nanogenerators

Owing to the high electron delocalization in 2D ultrathin regions derived from π-d conjugations, electrically conductive metal-organic frameworks (MOFs) are widely used electronic applications but mostly for rigid devices. The interaction mechanism between MOFs and flexible substrates remains unclear, which cannot meet increasing demand next-generation wearable electronics. Herein, copper-benzenehexathiol (Cu-BHT) layers developed underlying mechanisms responsible conductivity difference on different representative explored. It is found that not only molecular movement inside polymer also fusion Cu-MOFs affects intrinsic long-term stability. Therefore, potential guiding criteria selecting established. As a demonstration, Cu-BHT/polymer layer considered electrode of triboelectric nanogenerators harvest energy water droplets human motions, verifying significant role applications. This study reveals insights effect stability Cu-BHT advances development