A synergetic effect of piezoelectric energy harvester to enhance thermoelectric Power: An effective hybrid energy harvesting method

•A hybrid energy harvester, comprising a piezoelectric cantilever mounted on a thermoelectric generator, is proposed to enhance heat dissipation induced by cantilever vibration.•The increased power outputs of thermoelectricity and piezoelectricity are numerically analyzed.•The energy harvesting performance of the hybrid energy harvester is compared with that of a conventional harvester, composed of individually separated energy harvesters, to demonstrate its superiority.•Field tests, including wireless IoT device operation and vehicle engine test, verify that the harvester can operate in unstable conditions where inconsistent environmental vibration or heat pulse exist.