The smart graphene (Gr) sensor developed by this team is self-assembly arranged through Gr. No traditional polarization process is further required due to use of high conductivity of Gr. Further, because of the conductivity of the Gr sensor itself, no additional electrodes are required for collecting the mechanical-electric signals.The process of manufacturing the piezoelectric film can be simplifiedthe cost of process reduced. Moreover, the Gr sensor can be directly coated on materials with different curved shapes and, the sensitivity of the direct-coated sensor can be greatly enhanced.

Using the concept of bionicscircular economy to develop low-costhigh -performance flexible electrodesionic liquid polyelectrolytes for all solid-state flexible supercapacitors. This type of flexible electrode has excellent dimensional stabilityelectrochemical characteristics. The gel-state polyelectrolytes can be used with metal oxide electrodes to provide high scalability, low cost,high efficiency at high temperatures.

We proposedshowed the ferroelectric materials served as a prospective substrate to support TMD to achieve a pn homojunction, as the accumulationdepletion of an inevitably charged mobile carrier occurs in the TMD to screen the polarization field of the FE substrate. This work provides a non-volatile control of TMD dopinga promising way to produce a pn homojunction as a future building block of 2D device applications.