Naslov
Izvodljivost dvostruko-protočne elektrokemijske ćelije za pretvorbu topline u električnu energiju kod visokih gustoća struje
(Feasibility of double electrochemical flow cell for high current density conversion of heat to electricity)

Autori
Marko Plazanić

Vrsta, podvrsta i kategorija rada
Ocjenski radovi, diplomski rad, diplomski

Fakultet
Fakultet kemijskog inženjerstva i tehnologije

Mjesto
Zagreb

Datum
27.09

Godina
2017

Stranica
51

Mentor
Zoran Mandić

Neposredni voditelj
Anders Bentien

Ključne riječi
elektrokemisjki protočni članak, toplinski motor, Seebeck koeficijent, CV, SOC, polarizacijska krivulja, gustoće struje
(flow cell, heat engine, Seebeck coefficient, CV, SOC, polarisation curve, current density)

Sažetak
Feasibility of a double electrochemical flow cell for conversion of heat to electricity has been examined, i.e. the research question was if this system could be used as a heat engine. Redox species have temperature dependent redox potentials, and this dependence is different for different redox species. In theory if one has two different electrochemical cells at two different temperatures, with same redox species on the positive and the negative side, there should be a difference in potentials between two cells from which one could extract current and thus power that can be used for work. In this sense, two cell electrochemical heat engine has been constructed. In order to assess which redox pairs would be the most suitable for the heat engine, temperature dependent redox potentials, i.e. Seebeck coefficients, of different redox pairs were measured by cyclic voltammetry (CV). Basic measurements regarding batteries thermodynamics and its kinetics were conducted. Various sets of temperature differences (ΔT) and states-of-charge (SOC) values on the characteristics of two cell electrochemical heat engine were examined with battery tester. Measurements at open circuit voltages (OCVs) were conducted and polarisation curves were determined. Current densities of 2 mA/cm2 were achieved through conversion of heat to electricity and the measurements indicate electrochemical heat engine is feasible, however, it is necessary to further optimize the setup and the measurement procedure.

Izvorni jezik
Engleski

Znanstvena područja
Kemijsko inženjerstvo

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