Synthesis and structural and electrochemical characterization of sodium based thiophosphates electrolytes for all solid state batteries

Autor: Mayer, Sergio, Ducros, Jean-Baptiste, Fauth, François, Lecarme, Laureline, Villevieille, Claire
Přispěvatelé: Matériaux Interfaces ELectrochimie (MIEL), Laboratoire d'Electrochimie et de Physico-chimie des Matériaux et des Interfaces (LEPMI), Institut de Chimie du CNRS (INC)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA)-Institut de Chimie du CNRS (INC)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA), Département de l'Electricité et de l'Hydrogène pour les Transports (DEHS), Laboratoire d'Innovation pour les Technologies des Energies Nouvelles et les nanomatériaux (LITEN), Institut National de L'Energie Solaire (INES), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)-Institut National de L'Energie Solaire (INES), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), ALBA Synchrotron light source [Barcelone], ESRF
Jazyk: angličtina
Rok vydání: 2022
Předmět:
Zdroj: User Meeting 22
User Meeting 22, ESRF, Feb 2022, Grenoble, France
Popis: International audience; Along with the continuous population growth, which according to United Nations is projected to have reached 8 billion in November this year [1], the ever-increasing demand for reliable energy sources becomes the main concern of researchers coming from many different fields of work. To withstand the challenges posed by the current energetic systems, technological developments are pushed towards renewable and decentralized energy sources [2]. To take the most advantage of those, frequently intermittent in nature, reliable energy storage systems are required [3]. Electrochemical energy storage offers several desirable characteristics that include high efficiency, flexibility to meet different grid functions, long cycle life, and little maintenance [4]. All-solid-state batteries (ASSBs) pose advantages regarding the state-of-the-art liquid-based systems as their chemistry can be based on non-flammable materials and they operate at wider temperature ranges while having the potential to enable metallic anode [5]. As lithium is still a critical resource, sodium-based batteries arise among other viable technologies and developing ASSBs using Na as a charge carrier establishes an appealing alternative.Thiophosphate-based solid electrolytes can reach ionic conductivities beyond 1 mS·cm−1, enabling the viability for commercial applications [6]. However, synthesis, handling and processing of these materials are challenging as plenty of variables affect their electrochemical response.In this talk we present three different forms of Na solid electrolytes (SEs), a novel amorphous Na3PS4 phase (NPS-amorph), a crystalline one defined in the cubic I–43m (217) space group (NPS-cryst), and a crystalline Na3SbS4-based SE with W aliovalent partial substitution defined in the same 217 space group (NSWS-cryst). All three samples were obtained by mechanochemical synthesis route. Their structure and morphology, assessed by XRD and SEM EDS, respectively, are discussed and compared. Their intrinsic electrochemical properties, like the ionic conductivity (measured by electrochemical impedance spectroscopy), and their electrochemical stability windows (evaluated by cyclic voltammetry) will be correlated to their structural nature.
Databáze: OpenAIRE
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