Projects per year
Abstract
Next-generation Li-ion batteries are expected to exhibit superior energy and power density, along with extended cycle life. Ni-rich high-capacity layered nickel manganese cobalt oxide electrode materials (NMC) hold promise in achieving these objectives, despite facing challenges such as capacity fade due to various degradation modes. Crack formation within NMC-based cathode secondary particles, leading to parasitic reactions and the formation of inactive crystal structures, is a critical degradation mechanism. Mechanical and chemical degradation further deteriorate capacity and lifetime. To mitigate these issues, an artificial cathode electrolyte interphase can be applied to the active material before battery cycling. While atomic layer deposition (ALD) has been extensively explored for active material coatings, molecular layer deposition (MLD) offers a complementary approach. When combined with ALD, MLD enables the deposition of flexible hybrid coatings that can accommodate electrode material volume changes during battery operation. This study focuses on depositing (Formula presented.) -titanium terephthalate thin films on a (Formula presented.) electrode via ALD-MLD. The electrochemical evaluation demonstrates favorable lithium-ion kinetics and reduced electrolyte decomposition. Overall, the films deposited through ALD-MLD exhibit promising features as flexible and protective coatings for high-energy lithium-ion battery electrodes, offering potential contributions to the enhancement of advanced battery technologies and supporting the growth of the EV and stationary battery industries.
Original language | English |
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Article number | e12741 |
Number of pages | 14 |
Journal | Energy and Environmental Materials |
Volume | 7 |
Issue number | 6 |
Early online date | 13 May 2024 |
DOIs | |
Publication status | Published - Nov 2024 |
MoE publication type | A1 Journal article-refereed |
Keywords
- degradation mechanisms
- electrolyte decomposition
- hybrid coatings
- lithium-ion battery
- lithium-ion kinetics
- molecular layer deposition
- NMC811
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Dive into the research topics of 'Stabilized Nickel-Rich-Layered Oxide Electrodes for High-Performance Lithium-Ion Batteries'. Together they form a unique fingerprint.Projects
- 1 Active
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NextGenBat: Next Generation Battery Materials and Concepts
Kallio, T. (Principal investigator), Ahaliabadeh, Z. (Project Member), Ali, B. (Project Member), Llanos, P. S. (Project Member), Kosir, J. (Project Member), Pakseresht, S. (Project Member), Farrahi, N. (Project Member), Bogdanova, A. (Project Member) & Al-Ogaili, A. (Project Member)
01/04/2021 → 31/12/2024
Project: Business Finland: Strategic centres for science, technology and innovation (SHOK)
Equipment
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OtaNano - Nanomicroscopy Center
Seitsonen, J. (Manager) & Rissanen, A. (Other)
OtaNanoFacility/equipment: Facility
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Raw Materials Research Infrastructure
Karppinen, M. (Manager)
School of Chemical EngineeringFacility/equipment: Facility