All-solid-state lithium batteries with NMC955 cathodes: PVDF-free formulation with SBR and capacity recovery insights

• Tipo: Artigo em Revista Científica Internacional
• Data: 2025

Autores

Beatriz Moura Gomes (Autor) FEUP; Manuela C. Baptista (Autor) Outra; Ander Orue (Autor) Outra; Bhattacharjya Dhrubajyoti (Autor) Outra; Sylwia Terlicka (Autor) Outra; Peter Sjövall (Autor) Outra; Nico Zamperlin (Autor) Outra; C. Fonseca (Autor) FEUP; Jasmin Smajic (Autor) Outra; Ville Kekkonen (Autor) Outra; Willar Vonk (Autor) Outra; Artur Tron (Autor) Outra; Andy Schena (Autor) Outra; Anwar Ahniyaz (Autor) Outra; Maria Helena Braga (Autor) FEUP

Revista

A Revista está pendente de validação pelos Serviços Administrativos.

Título: Energy Materials

Vol. 5

ISSN: 2770-5900

Indexação

ISI Web of Knowledge - 0 Citações

ISI Web of Science

Projetos Associados

PULSELiON - PUlsed Laser depoSition tEchnology for soLid State battery manufacturIng supported by digitalizatiON

Outras Informações

ID Authenticus: P-018-ED3

DOI: 10.20517/energymater.2024.297

Abstract (EN): The nickel-rich NMC955 (Li Ni0.90Mn0.05Co0.05O2) cathode, with minimal cobalt, is the zenith of LiNixMnyCo1-x-yO2 (NMC) technology but faces structural and thermal stability challenges, losing an average of 15% of its capacity in the first discharge. Here, by selecting appropriate materials and synthesis methods in an all-solid-state battery cell, this challenge is effectively mitigated. A sustainable fabrication of the LiNMC955 positive electrode, excluding poly(vinylidene fluoride) (PVDF) and using styrene-butadiene rubber, demonstrates high retention in all-solid-state cells, without additional interlayers or pressure, at room temperature. To prevent oxygen release, spurious phase formation, and magnetic frustration, simulations determined optimal cycling thresholds and curve morphologies for a Li0/Li6PS5Cl/NMC955 cell by following the electrons. This optimized routine ensures prolonged cycle life and performance demonstrated by sheet resistance/Hall effect, Scanning Electron Microscopy/Energy-Dispersive X-ray Spectroscopy (SEM/EDX), Atomic Force Microscopy/Scanning Kelvin Probe Microscopy, Time-of-Flight Secondary Ion Mass Spectrometry, Raman, calorimetry, and electrochemical analyses. The tailored preparation method and cycling regimen enabled the fabrication of a high-performance cathode, achieving capacities exceeding 110-120 mAh.g-1at C discharging C-rate, after 200 cycles, with a self-recovering component shifting performance to theoretical capacities (192 mAh.g-1), emphasizing the cathode's pivotal role in all-solid-state performance.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Notas: Impact factor: 11.8 (Clarivate)

Nº de páginas: 20