A suitable
conductive ink for office inkjet printers is important
for the convenient design of flexible electrodes for triboelectric
nanogenerators (TENG). Ag nanowires (Ag NWs) easily printed with an
average short length of 1.65 μm were synthesized by using soluble
NaCl as a growth regulator and adjusting the amount of chloride ion.
The water-based Ag NWs ink with a low solid content of 1% but with
low resistivity was produced. The printed flexible Ag NWs-based electrodes/circuits
showed excellent conductivity with R
S/R
0 values kept at 1.03 after bending 50,000 times
on PI substrate and an excellent anticlimate property in acidic conditions
for 180 h on polyester woven fabric. The sheet resistance was reduced
to 4.98 Ω/sqr heated at 30–50 °C for 3 min by a
blower due to the formed excellent conductive network when compared
to Ag NPs-based electrodes. Finally, the integration of printed Ag
NWs electrode and circuits was applied to the TENG, which can be used
to predict a robot’s out-of-balance direction by the change
of the TENG signal. In all, a suitable conductive ink with a short
length of Ag NWs was fabricated, and flexible electrodes/circuits
can be conveniently and easily printed by office inkjet printers.
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