MXene Lubricated Tribovoltaic Nanogenerator with High Current Output and Long Lifetime

Highlights Successfully solves the key issue of tribovoltaic nanogenerators (TVNGs) lifetime (90,000 cycles) and improves its output current density (754 mA m −2 ) simultaneously. Conductive polar liquid with MXene as additive is proposed as the dominant factor in enhancing the electrical output performance and durability of TVNG simultaneously. The mechanism of lubricated TVNG with enhanced output performance is explained from the perspective of solution polarity at the first time. Mxene solution exhibits universality in different types of semiconductor systems (Cu and P -type Si, and Cu and N -GaAs as material pairs).