Journal of Coating Technology and Innovation

ABSTRACT

This review explores solid electrolyte interphase (SEI) modifying coatings, which play a crucial role in enhancing the stability and safety of lithium-ion batteries (LIBs). The SEI forms on anodes during battery cycling, providing a protective layer that mitigates electrolyte degradation. However, its degradation over time leads to capacity loss, necessitating innovative coating solutions. Various materials, including polymeric, ceramic, and metal oxide coatings, are discussed for their unique properties that improve SEI stability. Techniques such as atomic layer deposition (ALD), chemical vapor deposition (CVD), and scalable spray coating methods are highlighted for their effectiveness in applying these coatings. Performance evaluations reveal significant enhancements in capacity retention, thermal stability, and cycling longevity attributed to these coatings. Nonetheless, challenges related to material compatibility, manufacturing scalability, and sustainability remain. The review emphasizes the importance of ongoing research into eco-friendly and hybrid materials to further improve battery performance and align with environmental goals. Overall, SEI-modifying coatings are identified as a promising avenue for advancing LIB technology, ensuring enhanced safety and longevity for various applications in energy storage.

Article History

Received 20 September 2024; Revised 15 October 2024; Accepted 21 October 2024

KEYWORDS

1. Solid electrolyte interphase (SEI)
2. Polymeric coatings
3. Atomic layer deposition (ALD)
4. Chemical vapor deposition (CVD)