Power and electronic components that are self-healable, deformable, transparent, and self-powered are highly desirable for next-generation energy/ electronic/robotic applications. Here, an energy-harvesting triboelectric nanogenerator (TENG) that combines the above features is demonstrated, which can serve not only as a power source but also as self-powered electronic skin. This is the first time that both of the triboelectric-charged layer and electrode of the TENG are intrinsically and autonomously self-healable at ambient conditions. Additionally, comparing with previous partially healable TENGs, its fast healing time (30 min, 100% efficiency at 900% strain), high transparency (88.6%), and inherent superstretchability (>900%) are much more favorable. It consists of a metal-coordinated polymer as the triboelectrically charged layer and hydrogen-bonded ionic gel as the electrode. Even after 500 cuttingand-healing cycles or under extreme 900%-strain, the TENG retains its functionality. The generated electricity can be used directly or stored to power commercial electronics. The TENG is further used as self-powered tactilesensing skin in diverse human-machine interfaces including smart glass, an epidermal controller, and phone panel. This TENG with merits including fast ambient-condition self-healing, high transparency, intrinsic stretchability, and energy-extraction and actively-sensing abilities, can meet wide application needs ranging from deformable/portable/transparent electronics, smart interfaces, to artificial skins.

A trap-mediated solution-processed small molecule based artificial synaptic device is presented. This work reveals great potential for a small molecule based artificial synapse to serve in neuromorphic computing.

In article number 1904626, Ying‐Chih Lai, Ho‐Hsiu Chou, and co‐workers develop an entirely, intrinsically, and autonomously self‐healable, highly transparent, and super‐stretchable nanogenerator that can act as not only an energy harvester but also a self‐powered electronic skin. This unprecedented device with energy‐extracting and activity‐sensing abilities is timely and able to advance vast emerging fields including self‐powered electronics, human‐interactive interfaces, and prosthetic and robotic skins.