000127951 001__ 127951
000127951 005__ 20241125101145.0
000127951 0247_ $$2doi$$a10.1039/d3se00622k
000127951 0248_ $$2sideral$$a135152
000127951 037__ $$aART-2023-135152
000127951 041__ $$aeng
000127951 100__ $$aCastro-Ruiz, S.
000127951 245__ $$aPower factor improvement in a solid–liquid thermoelectric system formed by Sb:SnO<sub>2</sub> in contact with a chromium complex solution
000127951 260__ $$c2023
000127951 5060_ $$aAccess copy available to the general public$$fUnrestricted
000127951 5203_ $$aThermoelectric (TE) materials can convert heat into electricity. Good TE materials should have high power factors (PF) and low thermal conductivities. PF = S2σ is governed by the Seebeck coefficient S and the electrical conductivity σ. Most recent improvements in TE materials performance have been achieved by the reduction of the thermal conductivity, and strategies to improve the PF have been minor. Recently, an innovative concept to significantly increase the PF, based on the combination of a porous TE solid with an electrolyte, has been reported. Here, we make use of this new approach but using an electroactive salt (redox molecule) solution as electrolyte, rather than the non-electroactive electrolytes and ionic liquids previously employed. A system formed by a nanostructured and porous Sb:SnO2 film in contact with Cr(III) acetylacetonate dissolved in 3-methoxypropionitrile was prepared. Using this electrolyte, an average PF enhancement of 3.4 times was achieved, due to an average decrease of 23.2% and 82.8% in the absolute value of the Seebeck coefficient and the electrical resistivity of the solid, respectively. An impedance spectroscopy analysis, after checking by scanning electron microscopy and energy-dispersive X-ray spectroscopy that no changes take place in the Sb:SnO2 film due to the presence of electrolytes, revealed that the improvements come from the donation of electrons from the electrolyte to the solid, which increases its electrical conductivity and the usual drop in the Seebeck coefficient. The remarkable PF improvement obtained is among the highest reported and opens a new way of significantly enhancing this parameter.
000127951 536__ $$9info:eu-repo/grantAgreement/ES/AEI/PID2021-122900NB-I00$$9info:eu-repo/grantAgreement/ES/DGA/E50-20D$$9info:eu-repo/grantAgreement/EC/H2020/863222/EU/Solid-liquid thermoelectric systems with uncorrelated properties/UncorrelaTEd$$9This project has received funding from the European Union’s Horizon 2020 research and innovation program under grant agreement No H2020 863222-UncorrelaTEd$$9info:eu-repo/grantAgreement/ES/RYC2019-026693-I/AEI/10.13039/501100011033
000127951 540__ $$9info:eu-repo/semantics/openAccess$$aby$$uhttp://creativecommons.org/licenses/by/3.0/es/
000127951 590__ $$a5.0$$b2023
000127951 592__ $$a1.213$$b2023
000127951 591__ $$aCHEMISTRY, PHYSICAL$$b61 / 178 = 0.343$$c2023$$dQ2$$eT2
000127951 593__ $$aEnergy Engineering and Power Technology$$c2023$$dQ1
000127951 591__ $$aMATERIALS SCIENCE, MULTIDISCIPLINARY$$b131 / 439 = 0.298$$c2023$$dQ2$$eT1
000127951 593__ $$aFuel Technology$$c2023$$dQ1
000127951 591__ $$aENERGY & FUELS$$b71 / 171 = 0.415$$c2023$$dQ2$$eT2
000127951 593__ $$aRenewable Energy, Sustainability and the Environment$$c2023$$dQ2
000127951 594__ $$a10.0$$b2023
000127951 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000127951 700__ $$aMárquez-García, L.
000127951 700__ $$aSolis-de la Fuente, M.
000127951 700__ $$aBeltrán-Pitarch, B.
000127951 700__ $$aMota-Babiloni, A.
000127951 700__ $$aVidan, F.
000127951 700__ $$aÍñigo-Rabinal, P.
000127951 700__ $$aGuisado-Barrios, G.
000127951 700__ $$aGarcía-Cañadas, J.
000127951 773__ $$g7, 17 (2023), 4254-4259$$pSustain. energy fuels$$tSustainable Energy & Fuels$$x2398-4902
000127951 8564_ $$s704143$$uhttps://zaguan.unizar.es/record/127951/files/texto_completo.pdf$$yVersión publicada
000127951 8564_ $$s2746127$$uhttps://zaguan.unizar.es/record/127951/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000127951 909CO $$ooai:zaguan.unizar.es:127951$$particulos$$pdriver
000127951 951__ $$a2024-11-22-12:04:04
000127951 980__ $$aARTICLE