A novel piezoelectric paper based on
antimony sulfoiodide (SbSI) nanowires is reported.
The composite of tough sonochemically produced
SbSI nanowires (with lateral dimensions 10–100 nm
and length up to several micrometers) with very
flexible cellulose leads to applicable, elastic material
suitable to use in fabrication of, for example, piezoelectric
nanogenerators. For mechanical energy harvesting,
cellulose/SbSI nanocomposite may be used.
Due to its high values of electromechanical coefficient
(k33 = 0.9) and piezoelectric coefficient
(d33 = 1 9 10-9 C/N), SbSI is a very attractive
material for such devices. The preliminary investigations
of a simple cellulose/SbSI nanogenerator for
shock pressure (p = 3 MPa) and sound excitation
(f = 175 Hz, Lp = 90 dB) allowed to determine its
open circuit voltage 2.5 V and 24 mV, respectively.
For a load resistance equal to source impedance
(ZS = 2.90(11) MX), maximum output power density
(PL = 41.5 nW/cm3 for 0.05-mm-thick sheet of this
composite) of the cellulose/SbSI nanogenerator was
observed. Cellulose/SbSI piezoelectric paper may also
be useful to construct gas nanosensors and actuators
