Flexible graphene/Na_0.75CoO₂ thermocouple on normal office paper

In electronic devices and energy conversion, flexible thermoelectric materials have potential applications due to their easy preparation and good flexibility. Here we report thermoelectric response of thermocouple device Graphene/Na_0.75CoO₂ based traces as “V” pattern draw on normal print paper. The output voltage of the thermocouple device is 5.18 mV which is considerably good in comparison to other thermocouple devices. This convenient method of preparing these novel flexible thermoelectric materials may be developed further for the formulation of other flexible thermoelectric materials, which will be the focus of future research.