THERMOELECTRICITY INITIATIVE: FROM FUNDAMENTAL RESEARCH TO APPLICATION

Gustavo Gonçalves Dalkiranis Pereira; João Bocchi; German Dario Gomez Higuita; Bruno Bassi Millan Torres; Osvaldo de Oliveira Junior; Gregório Faria

Todos os Trabalhos

Trabalho

Título do Trabalho

THERMOELECTRICITY INITIATIVE: FROM FUNDAMENTAL RESEARCH TO APPLICATION

Autores

Gustavo Gonçalves Dalkiranis Pereira
João Bocchi
German Dario Gomez Higuita
Bruno Bassi Millan Torres
Osvaldo de Oliveira Junior
Gregório Faria

Modalidade

Pôster - resumo

Área temática

Dispositivos eletrônicos, eletroquímicos, supercapacitores e baterias

Data de Publicação

27/05/2026

País da Publicação

Brasil

Idioma da Publicação

pt-BR

Página do Trabalho

https://www.even3.com.br/anais/workshop-do-ineo-2026/1462054-thermoelectricity-initiative--from-fundamental-research-to-application

ISBN

978-65-272-2467-9

Palavras-Chave

Thermoelectricity, polymeric materials, phonon drag and thermoelectric generator.

Resumo

Developing new technologies and strategies for clean energy generation is crucial to mitigate the effects of global warming and the growing global energy demand. One alternative is the use of thermoelectric materials, which are capable of converting heat into electricity [1,2]. In this context, the initiative aims to develop a thermoelectric generator using conductive polymers. To manufacture an efficient generator, a fundamental study of the thermoelectric properties of new polymeric materials will be performed. In order to achieve materials with better thermoelectric performance, p-type polymer inks of poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) were synthesized via oxidative polymerization [3]. By varying the molar ratio between the oxidizing agent, 3,4-ethylenedioxythiophene monomer (EDOT), and counterion poly(styrenesulfonate) (PSS), inks with different properties were obtained. For a complete thermoelectric characterization of the studied materials, a lab-made measuring system capable of applying a temperature difference and measuring the voltage generated by the sample was used to determine the Seebeck coefficient [4]. Using the same system, but without applying a temperature gradient, the electrical conductivity was determined through IV curves. The 3w-Völklein method will be used to determine the thermal conductivity. In the next steps of this work, Naphthalene diimide (NDI)-based conjugated polymers with good thermoelectric performance will be studied as n-type materials. Moreover, transport processes related to phonons will be studied using the Terahertz beamline at Sirius, Brazilian Synchrotron Light Laboratory (LNLS) [5]. Finally, after the thermoelectric characterization of the materials, they will be applied in the fabrication of a thermoelectric generator. Acknowledgments This work was supported by the National Council for Scientific and Technological Development (CNPq, Brazil) (grant numbers 141507/2023-3, 446650/2024-2 and 314845/2025-9); Sao Paulo Research Foundation, FAPESP (grant numbers 2024/16261-2, 2024/18520-5 and 2025/28304-0) National Institute of Organic Electronics INEO/FAPESP/INCT (CNPq grant number 408449/2024-1 and FAPESP grant number 2025/27044-5). References [1] C. Forman, et al., Estimating the global waste heat potential. Renewable and Sustainable Energy Reviews 57, 1568–1579, 2016. [2] M. Papapetrou, et al., Industrial waste heat: Estimation of the technically available resource in the EU per industrial sector, temperature level and country. Appl Therm Eng 138, 207–216, 2018. [3] G. D. G. Higuita, et al., Synthesis engineering and development of emergent conducting pi-conjugated materials: applications in energy harvesting and storage devices. Mater. Adv., 6, 6066-6075, 2025. [4] G. G. Dalkiranis, et al., Measurement System to Determine the Seebeck Coefficient and Electrical Conductivity of Thin Films. IEEE Transactions on Instrumentation and Measurement, 74, 1503706, 2025. [5] Zhou, J. et al. Ab initio optimization of phonon drag effect for lower-temperature thermoelectric energy conversion. Proceedings of the National Academy of Sciences 112, 14777–14782, 2015.

Título do Evento: Workshop do INEO 2026
Cidade do Evento: Nazaré Paulista
Título dos Anais do Evento: Anais do Workshop do INEO 2026
Nome da Editora: Even3
Meio de Divulgação: Meio Digital

Como citar

PEREIRA, Gustavo Gonçalves Dalkiranis et al.. THERMOELECTRICITY INITIATIVE: FROM FUNDAMENTAL RESEARCH TO APPLICATION.. In: Anais do Workshop do INEO 2026. Anais...Nazaré Paulista(SP) Hotel Estância Atibainha, 2026. Disponível em: https//www.even3.com.br/anais/workshop-do-ineo-2026/1462054-THERMOELECTRICITY-INITIATIVE--FROM-FUNDAMENTAL-RESEARCH-TO-APPLICATION. Acesso em: 10/08/2026