With the rapid development of the Internet-of-Things（IoT） and artificial intelligence

the energy supply of sensors has become one of the key factors restricting the further development of the ubiquitous electric IoT. As an efficient

environmentally friendly

and low-cost new technology for collecting environmental energy

triboelectric nanogenerator has obvious advantages in the field of self-powered sensors. This article introduces a triboelectric nanogenerator based on laser-induced graphene electrodes. Using graphene electrodes instead of traditional metal electrodes not only greatly simplifies the preparation process but also reduces the production cost of triboelectric nanogenerator. At the same time

it also has excellent output performance. The power density can reach 456.3 mW/m2 under the impedance of 80 M?. Moreover

a basic output performance test of a triboelectric nanogenerator based on laser-induced graphene electrodes is carried out

and the influence of laser power on its output is explored;meanwhile it is used to monitor the opening and closing states of movable objects such as doors and drawers. The research results in this paper can help promote the large-scale application of triboelectric nanogenerator

and can provide a new idea for the sensor energy supply problem of the power IoT.