Absolute Seebeck coefficient of platinum from 80 to 340 K and the thermal and electrical conductivities of lead from 80 to 400 K

Abstract

The absolute Seebeck coefficient of platinum was determined from 80 to 340 K by direct comparsion to lead. Results of this comparison disagree with previous results which have been used for the calculation of absolute values for other materials. The thermal conductivity λ and electrical resistivity ρ of the lead standard were also determined. The electrical resistivity could be described with a modified Gruneisen-Bloch equation which allows for the effect of thermal expansion on the Debye temperature ΘD. The ratio λρ/T was within 1% of the Sommerfeld value of 2.443×10−8 (V/K)2 from 1.0 to 5.0 ΘD.

Electrochemical Impedance Spectroscopy Study of the Mass Transfer in an Anode-Supported Microtubular Solid Oxide Fuel Cell

“…S H 2 , S H 2 O are the entropies consumed by the formations of H 2 and H 2 O, respectively. Here the entropy transported by electrons at the electrode is neglected since its value in metal is negligibly small compared with the other terms in general (Moore & Graves, 1973;Vedernikov, 1969 to that of fed gases. For this calculation, 50 -75 % of total current is assumed between the inlet and midpoint of the anode tube according to hydrogen utilization to estimate the amounts of the product water and remaining hydrogen at the midpoint, considering current distribution along the axial direction owing to the Nernst loss.…”

Magnetothermopower and magnetoresistance of single Co-Ni/Cu multilayered nanowires

“…As explained above, the thermopower for Co/Cu and Ni/Cu multilayers is estimated from the literature values for bulk in reference to Pt 16,21,[76][77][78] . Since the composition has a stronger influence than the layer thicknesses, the Co-Ni to Cu ratio is set to 5:1.…”

Methods and technique of thermopower and electrical conductivity measurements of thermoelectric materials at high temperatures

“…Для обоих металлов требуется расширение области определения абсолютной термоЭДС в сторону низких температур. Абсолютная термоЭДС платины в интервале от 25 до 1600 К была определена в работе [26] с использованием данных Робертса и низкотемпературных данных Мура и Грейвса [27], которые были скорректированы с использованием данных Робертса для свинца [23] так, что эти скорректированные данные согласуются с результатами Робертса для высоких температур. Эти данные, а также исходные экспериментальные результаты для платины показаны на рис.…”