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NanoEvolution

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Nanoscale phase evolution in lithium sulfur batteries

Lithium-sulfur (Li-S) batteries are considered a strategic candidate to achieve both significantly higher energy storage and better sustainability than current Lithium-ion batteries. They operate by converting sulfur into lithium... see more

30/06/2022

ETH Zürich

191K€

Project Budget: 191K€

Project leader

EIDGENOESSISCHE TECHNISCHE HOCHSCHULE ZUERICH No se ha especificado una descripción o un objeto social para esta compañía.

PARTICIPATION DEPralty Sin fecha límite de participación.

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Financing granted El organismo H2020 notifico la concesión del proyecto The day 2022-06-30

MSCA-IF-2019: Individual Fellowships Objective:The goal of the Individual Fellowships is to enhance the creative and innovative potential...

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Este proyecto no cuenta con búsquedas de partenariado abiertas en este momento.

Private Information

No hay información privada compartida para este proyecto. Habla con el coordinador.

2 Participantes

ETH Zürich

191.15K€ | Leader

BECA GRAFIC

293.72K€ | participant

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Project duration: 26 months Date Start: 2020-04-20
End date: 2022-06-30

Project leader

EIDGENOESSISCHE TECHNISCHE HOCHSCHULE ZUERICH No se ha especificado una descripción o un objeto social para esta compañía.

Project Budget 191K€

participation deadline Sin fecha límite de participación.

Project description Lithium-sulfur (Li-S) batteries are considered a strategic candidate to achieve both significantly higher energy storage and better sustainability than current Lithium-ion batteries. They operate by converting sulfur into lithium sulfide and back on discharge/charge. However, practically achieved energies are far from theoretical values due to difficulties to load sulfur in high areal and volume density in the porous carbon cathode and to fully use it electrochemically. Current experimental techniques are strong in aspects, but fail to combine the required coverage of length scales ranging from sub-nanometers to micrometers in the crucial real-time in situ fashion. NanoEvolution aims to i) identify nanoscale structure-transport-performance correlations, ii) understand capacity limitations and reaction mechanisms, and iii) derive design criteria for improved Li-S battery performance. To achieve these goals, structure-sensitive in situ scattering and imaging methods during electrochemically operating custom-built in situ Li-S cells will be implemented. Specifically, in situ small and wide angle X-ray scattering (SWAXS) will be established and synergistically combined with nanoscale phase evolution modelling for data analysis. In situ nanoscale X-ray tomography will be realized to achieve continuous structural sensitivity from (sub-)nanometer (SWAXS) to sub-micrometer scales (tomography). The novel combination of modelling and structure-sensitive in situ experiments allows real-time detection of the Li2S/sulfur morphology and location within the nanoporous carbon electrode during charge and discharge, at length scales so far not accessible to other methods. This allows to determine the final cause for capacity limitation (mass transport vs. charge transport), ii) elucidate the nature of the multiple-step sulfur reduction (oxidation) reaction, and iii) derive design criteria for improved sulfur loading, capacity utilization, and power densities.

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