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

• Type: Article in International Scientific Journal
• Date: 2025

Authors

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

Journal

The Journal is awaiting validation by the Administrative Services.

Title: Energy Materials

Vol. 5

ISSN: 2770-5900

Indexing

ISI Web of Science

Associated Projects

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

Other information

Authenticus ID: P-018-ED3

DOI: 10.20517/energymater.2024.297

Abstract (EN): <jats:p>The nickel-rich NMC955 (LiNi0.90Mn0.05Co0.05O2) cathode, with minimal cobalt, is the zenith of 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 PVDF and using styrene-butadiene rubber SBR, 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, SEM/EDX, AFM/SKPM, TOF-SIMS, 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-1 at 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.</jats:p>

Language: English

Type (Professor's evaluation): Scientific

Notes: Impact factor: 11.8 (Clarivate)