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DTSTART:20250330T030000
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BEGIN:VEVENT
DTSTAMP:20260424T062941Z
UID:1739525400@ist.ac.at
DTSTART:20250214T103000
DTEND:20250214T113000
DESCRIPTION:Speaker: Emmanuel Guilmeau\nhosted by Maria Ibáñez\nAbstract:
  Thermoelectricity offers a promising solution to address energy scarcity 
 by enablingthe efficient conversion of waste heat into useful electricity.
  Continued research anddevelopment in this field can lead to the developme
 nt of more efficient and cost-effectivethermoelectric materials\, which ca
 n play a significant role in addressing the global energychallenge. The sc
 ientific challenge is here to synthesize a material in which the electrica
 l andthermal properties are decoupled. In short\, how can we develop an el
 ectrical conductor thatconducts very little heat?In this context\, numerou
 s studies have demonstrated the potential of sulfide materialsfor thermoel
 ectric applications over the temperature range 300 – 700 K. Although mos
 tmaterials have high thermal conductivities\, recent works demonstrated th
 at extremely lowthermal conductivities could be achieved in sulfides throu
 gh order/disorder phenomena\,rattling dynamics\, and lattice anharmonicity
 .During this presentation\, recent advances in synthetic sulfide minerals\
 , halides andsulfochlorides\, will be shown. Some peculiar structural feat
 ures in connection with materialsprocessing\, chemical bonds\, lattice vib
 rations and atomic and nanoscale order/disorderphenomena were carefully ex
 amined to establish rules and correlations between the crystalstructures\,
  nano-microstructures\, electronic structures\, vibrational and thermoelec
 tricproperties. [1-5] References[1] P. Lemoine\, G. Guélou\, B. Raveau\,
  E. Guilmeau\, Angew. Chemie Int. Ed. 61 (2022)e202108686[2] K. Maji\, P. 
 Lemoine\, A. Renaud\, B. Zhang\, X. Zhou\, V. Carnevali\, C. Candolfi\, B.
  Raveau\, R.Al Rahal Al Orabi\, M. Fornari\, P. Vaqueiro\, M. Pasturel\, C
 . Prestipino\, E. Guilmeau\, J. Amer.Chem. Soc. 144 (2022) 1846[3] X. Shen
 \, K. Pal\, P. Acharyya\, B. Raveau\, P. Boullay\, O. I. Lebedev\, C. Pres
 tipino\, S. Fujii\, CC.Yang\, I-Y. Tsao\, A. Renaud\, P. Lemoine\, C. Cand
 olfi\, E. Guilmeau\, J. Amer. Chem. Soc. 2024[4] P. Acharyya\, K. Pal\, B.
  Zhang\, T. Barbier\, C. Prestipino\, P. Boullay\, B. Raveau\, P. Lemoine\
 , B.Malaman\, X. Shen\, A. Renaud\, B. Uberuaga\, C. Candolfi\, X. Zhou\, 
 E. Guilmeau\, J. Amer. Chem.Soc. 146 (2024) 13477[5] Z. Zeng\, X. Shen\, R
 . Cheng\, O. Perez\, N. Ouyang\, Z. Fan\, P. Lemoine\, B. Raveau\, E.Guilm
 eau\, Y. Chen\, Nature Comm. 15 (2024) 3007
LOCATION:Sunstone Bldg / Ground floor / Big Seminar Room A\, ISTA
ORGANIZER:Rita.Pacarada@ist.ac.at
SUMMARY:Emmanuel Guilmeau: Insights into the crystal chemistry of thermoele
 ctric sulfides\, halides and sulfochlorides
URL:https://talks-calendar.ista.ac.at/events/5557
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