The influence of electrochemical cycling protocols on capacity loss in nickel-rich lithium-ion batteries.

ABSTRACT: The transition towards electric vehicles and more sustainable transportation is dependent on lithium-ion battery (LIB) performance. Ni-rich layered transition metal oxides, such as NMC811 (LiNi_0.8Mn_0.1Co_0.1O₂), are promising cathode candidates for LIBs due to their higher specific capacity and lower cost compared with lower Ni content materials. However, complex degradation mechanisms inhibit their use. In this work, tailored aging protocols are employed to decouple the effect of electrochemical stimuli on the degradation mechanisms in graphite/NMC811 full cells. Using these protocols, impedance measurements, and differential voltage analysis, the primary drivers for capacity fade and impedance rise are shown to be large state of charge changes c

SUBMITTER: Dose WM 

PROVIDER: S-EPMC8547555 | biostudies-literature | 2021 Oct

REPOSITORIES: biostudies-literature