Study of a High-Voltage NMC Interphase in the Presence of a Thiophene Additive Realized by Operando SHINERS.

ABSTRACT: Improving the electrochemical properties and cycle life of high-voltage cathodes in lithium-ion batteries requires a deep understanding of the structural properties and failure mechanisms at the cathode electrolyte interphase (CEI). We present a study implementing an advanced Raman spectroscopy technique to specifically address the compositional features of interphase during cell operation. Our operando technique, shell-isolated nanoparticle-enhanced Raman spectroscopy (SHINERS), provides a reliable platform to investigate the dynamics of the interphase structure and elucidate the compositional changes near the cathode surface. To improve the CEI properties, thiophene was introduced and investigated as an effective, high-voltage film-forming additive by largely diminishing the capacity fad

SUBMITTER: Pfeiffer F 

PROVIDER: S-EPMC9923680 | biostudies-literature | 2023 Feb

REPOSITORIES: biostudies-literature