Year: 1992
Type: article
Abstract: A practical method for determination of thermoelectric powers is developed. The method includes contributions from heat capacities and Thomson effects. We have applied the method to the cell Ag(T 1 ) | Ag 2 SO 4 -Li 2 SO 4 | Ag(T 2 ), and calculated the transported entropy, , and the heat of transfer Q * , from thermopotential measurements. Results shows that the Thomson coefficient, τ Ag+ , is significant and that is relatively constant with structure and composition variations (0.1< x Ag 2 SO 4 <0.175). With electrolytes containing less than 10 mole% Ag 2 SO 4 , increases strongly with decreasing composition. For solid mixtures containing 10–17.5 mole% Ag 2 SO 4 , Q * is negative and varies with composition. The negative sign indicates that Ag 2 SO 4 is enriched at the hot side. For solid mixtures containing less than 10 mole% Ag 2 SO 4 , Q * is approximately zero.
Source: ECS Proceedings Volumes
Author: A. Grimstvedt
Institution: Norwegian University of Science and Technology
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: diamond
Funder: Norges Forskningsråd
OpenAlex ID: W2914178690