The
optimization of the capacitance of friction materials has been
demonstrated to be an effective method for enhancing the performance
of triboelectric nanogenerators (TENGs). For instance, the application
of high dielectric nanoparticles can observably enhance the dielectric
properties and surface potential of friction materials. In this work,
calcium copper titanate nanowires with a large aspect ratio were added
to polydimethylsiloxane (PDMS) to prepare composite films. Then, the
PDMS film and aluminum foil were used to assemble a simple push-type
TENG. The results demonstrate that an extremely low filler concentration
can significantly increase the output performance of the TENG without
surface treatment. With an optimized weight ratio (5 wt %), the TENG
exhibits the highest voltage of 350 V, current density of 0.375 μA/cm2, and power density of 40.7 μW/cm2 and can
illuminate 100 light-emitting diodes. Meanwhile, the TENG can effectively
harvest energy of different bending degrees of the wrist and elbow.
In addition, the device also exhibits superior stability and durability
and can charge commercial capacitors. This work provides an effective
strategy for the development and preparation of triboelectric generators
with excellent output performance.
With the rapid development of science and technology, it is urgent to develop the extreme condition-resistance and multifunctionality of sensors to broaden their application scenarios. Here, an extreme condition-resistant superelastic...
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