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opeRando chEmical spAce- and time-resoLved quantification of Solid Electrolyte Interphase in hard carbon anode for sustainable sodium-ion batteries

Opis projektu

Zachowanie elektrolitów na styku elektrod w czasie rzeczywistym

Akumulatory sodowo-jonowe stanowią tanią i trwałą alternatywę dla powszechnie stosowanych akumulatorów litowo-jonowych. Projekt REALSEI, finansowany w ramach działania „Maria Skłodowska-Curie”, ma na celu wykrywanie w czasie rzeczywistym tworzenia się granicy faz stałego elektrolitu na powierzchni anody w wyniku elektrochemicznej redukcji elektrolitu. Proces ten, który negatywnie wpływa na długoterminową stabilność akumulatorów sodowo-jonowych, pozostaje słabo zbadany. Zespół planuje opracowanie kompleksowych technik charakteryzowania powierzchni w czasie i przestrzeni, opartych na zastosowaniu synchrotronowego obrazowania rentgenowskiego o wysokiej rozdzielczości.

Cel

The goal of REALSEI is to visualize for the first time in real-time the Solid Electrolyte Interphase formation at the hard-carbon (HC) anode in a Na-ion battery (NIB). Local electrochemical processes occurring at the solid-liquid interface of Na-ion batteries are currently largely unexplored. To keep global warming around 2.7°C by 2100, the installed global grid energy storage capacity needs to be tripled by 2050. A technological breakthrough is required to meet this challenge: we need a low cost and sustainable alternative to Li-ion batteries. Thanks to recent advances, the so-called ‘beyond-lithium’ batteries (BLB) such as K+ and Na+ based systems could be an everyday reality. Bio-waste mesoporous hard carbon (BHC) is one of the most promising anode materials as a universal ion host for BLBs. The use of BHC as a low-cost and recycled solution in BLBs might provide the breakthrough required and give rise to the next generation of batteries. However, uncontrolled SEI formation limits the large-scale application of BHC in BLBs, in particular for Na-ion batteries (NIBs), the most mature and promising. For NIBs, the SEI is still an unresolved issue that limits its long-term stability. REALSEI wants to establish a comprehensive operando time- and space- resolved characterization methodology to transit from bulk (transmission mode) to surface analytical characterization (grazing incidence mode) based on lab and synchrotron high-resolution X-ray techniques which will results for the first time in a comprehensive visualization and quantification of the species forming the SEI in real-time on HC. REALSEI will apply principles of physics and electrochemistry and its results will have substantial scientific, technological, and societal impact.

Koordynator

UNIVERSITA DEGLI STUDI DI ROMA LA SAPIENZA
Wkład UE netto
€ 183 473,28
Adres
Piazzale Aldo Moro 5
00185 Roma
Włochy

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Region
Centro (IT) Lazio Roma
Rodzaj działalności
Higher or Secondary Education Establishments
Linki
Koszt całkowity
€ 183 473,28