A newly proposed thermoelectric generation material is the skutterudite family, such as FeAs3 or CoAs3. Assuming this new material has a Seebeck coefficient S = 35 ?V/K (microvolts per degree Kelvin), the electronic conductivity =1x104 (Ohm-cm)-1, and thermal conductivity = 150 W/Km, calculate the maximum thermoelectric generation efficiency for a temperature difference of 200ºC