Tens
of thousands of plastics produced by people have caused incalculable
harm to the environment. At the same time, the consumption of energy
is becoming more and more serious, and the use of fossil energy to
generate electricity has caused further damage to the environment.
It is a good way to recycle waste plastics and make energy collection
and generation devices based on them. Here, a triboelectric nanogenerator
(TENG) based entirely on waste plastic bags is proposed. Three types
of TENGs, PA-PVC-TENG, PA-PE-TENG, and PVC-PE-TENG, were fabricated
by selecting the most common PA, PVC, and PE plastic films as the
triboelectric layer. The output performance was improved by gilding
the back of the plastic films as a conductive electrode. Under different
conditions, three different types of TENGs were tested. The PA-PVC-TENG
was found to show the best output performance with an open-circuit
voltage of 35.7 V, a short-circuit current of 5.85 μA, and a
maximum output power density of 152.6 mW/m2. After further
integration with supercapacitors, the integrated system can drive
multiple commercial LEDs, and it can be used as an antitheft device
to achieve early warning. This study realizes the integration of a
TENG and energy storage devices, and as a TENG is based entirely on
waste plastic bags, it not only realizes the recycling of plastics
but also further realizes power generation, which can alleviate energy
consumption to some extent.