This second volume on the challenges and prospects of thermoelectric generators covers the reliability and durability of thermoelectric materials and devices, the effect of microstructures on the understanding of electronic properties of complex materials, thermoelectric nanowires, the impact of chemical doping or magnetism, thermoelectric generation using the anomalous Nernst effect, phonon engineering, the current state and future prospects of thermoelectric technologies, transition metal silicides, and past, present and future applications of thermoelectrics.