000002322 001__ 2322
000002322 005__ 20181220113745.0
000002322 022__ $$a1543-186X
000002322 0247_ $$2DOI$$a10.1007%2Fs11664-018-6175-z
000002322 037__ $$aARTICLE
000002322 041__ $$aeng
000002322 245__ $$aThermoelectric generators based on ionic liquids
000002322 260__ $$c2018-03
000002322 269__ $$a2018-03
000002322 300__ $$a5 p.
000002322 506__ $$avisible
000002322 520__ $$9eng$$aLooking at energy harvesting using body or waste heat for portable electronic or on-board devices, Ionic liquids are interesting candidates as thermoactive materials in thermoelectric generators (TEGs) because of their outstanding properties. Two different kinds of ionic liquid, with alkylammonium and choline as cations, were studied, whereby different anions and redox couples were combined. This study focussed on the intention to find non-hazardous and environmentally friendly ionic liquids for TEGs to be selected among the thousands that can potentially be used. Seebeck coefficients (SEs) as high as − 15 mV/K were measured, in a particular case for an electrode temperature difference of 20 K. The bottleneck of our TEG device is still the abundance of negative SE liquids matching the internal resistance with the existing positive SE-liquids at series connections. In this paper, we show further progress in finding increased negative SE liquids. For current extraction from the TEG, the ionic liquid must be blended with a redox couple, allowing carrier exchange in a cyclic process under a voltage which is incuced by the asymmetry of the generator in terms of hot and cold electrodes. In our study, two types of redox pairs were tested. It was observed that a high SE of an ionic liquid/redox blend is not a sufficient condition for high power output. It appears that more complex effects between the ionic liquid and the electrode determine the magnitude of the final current/power output. The physico-chemical understanding of such a TEG cell is not yet available.
000002322 546__ $$aEnglish
000002322 540__ $$acorrect
000002322 592__ $$aHE-Arc Ingénierie
000002322 592__ $$aHEIA-FR
000002322 592__ $$bChemTech - Institut des technologies chimiques
000002322 592__ $$cIngénierie et Architecture
000002322 65017 $$aIngénierie
000002322 655__ $$ascientifique
000002322 6531_ $$9eng$$aionic liquid
000002322 6531_ $$9eng$$athermoelectric generator
000002322 6531_ $$9eng$$aenvironmentally friendly
000002322 6531_ $$9eng$$aenergy harvesting
000002322 6531_ $$9eng$$abody/waste heat
000002322 6531_ $$9eng$$aSeebeck coefficient
000002322 700__ $$aEdith Laux$$uSchool of Engineering – HE-Arc Ingénierie, HES-SO // University of Applied Sciences Western Switzerland
000002322 700__ $$aStefanie Uhl$$uSchool of Engineering – HE-Arc Ingénierie, HES-SO // University of Applied Sciences Western Switzerland
000002322 700__ $$aLaure Jeandupeux$$uSchool of Engineering – HE-Arc Ingénierie, HES-SO // University of Applied Sciences Western Switzerland
000002322 700__ $$aPilar Pérez López$$uSchool of Engineering and Architecture (HEIA-FR), HES_SO // University of Applied Sciences Western Switzerland
000002322 700__ $$aPauline Sanglard$$uSchool of Engineering and Architecture (HEIA-FR), HES_SO // University of Applied Sciences Western Switzerland
000002322 700__ $$aEnnio Vanoli$$uSchool of Engineering and Architecture (HEIA-FR), HES_SO // University of Applied Sciences Western Switzerland
000002322 700__ $$aRoger Marti$$uSchool of Engineering and Architecture (HEIA-FR), HES_SO // University of Applied Sciences Western Switzerland
000002322 700__ $$aHerbert Keppner$$uSchool of Engineering – HE-Arc Ingénierie, HES-SO // University of Applied Sciences Western Switzerland
000002322 773__ $$tJournal of Electronic Materials
000002322 8564_ $$s981395$$uhttps://hesso.tind.io/record/2322/files/LauxMarti_2018_ThermoelectricGenerators.pdf
000002322 8564_ $$s4460413$$uhttps://hesso.tind.io/record/2322/files/LauxMarti_2018_ThermoelectricGenerators.pdf?subformat=pdfa$$xpdfa
000002322 906__ $$aGREEN
000002322 909CO $$ooai:hesso.tind.io:2322$$pGLOBAL_SET
000002322 950__ $$aI1
000002322 980__ $$ascientifique
000002322 981__ $$ascientifique