Recently, Professor Zheng Haiwu's group has made new progress in the research of flexible piezoelectric nano-generators. The related research results have been published in the top international journal Advanced Functional Materials (latest impact factor 15.621).

Sensor networks and the Internet of Things (IoT), made up of portable electronic devices, have grown rapidly in recent years. These electronic devices often require a portable, continuous power source to power them. The use of traditional batteries will face a series of problems such as management and recycling, and waste batteries will also be harmful to the environment. Therefore, as a new technology that converts mechanical energy into electrical energy, piezoelectric nanogenerators will play an important role in the development of IoT.

In recent years, Professor Zheng Haiwu's research team has mainly carried out environmental energy capture and polarization effects based on piezoelectric and triboelectric nanogenerators on the photoelectric effects of low-dimensional ferroelectric and piezoelectric materials. A series of research progresses include: ship-type composite electromagnetic-friction nano-generators (Nano Energy, 2019, 57, 616); KNN-based high-performance lead-free piezoelectric nano-generators (J. Mater. Chem. A, 2018, 6 , 16439); self-driven smart water meters based on friction nano-generators (ACS Appl. Mater. Interfaces 2019, 11, 6396-6403); composite nano-generators that collect environmental wind and thermal energy (ACS Appl. Mater. Interfaces 2018, 10 , 14708-14715); spring-assisted friction-electromagnetic hybrid generator (Nanoscale, 2018, 10, 14747); ferroelectric photovoltaic effect of BFTO / CuO film (Appl. Phys. Lett. 2017, 111, 032901); Au surface Plasmon excitons enhance the photovoltaic effect of BLFO films (J. Mater. Chem. C, 2017, 5, 10615).

Figure 1: Using COMSOL to verify the effect of 3D interconnected porous structures on output