Surface reduction in lithium- and manganese-rich layered cathodes for lithium ion batteries drives voltage decay.

ABSTRACT: Li- and Mn-rich layered oxides (Li_1.2Ni_0.2Mn_0.6O₂) are actively pursued as high energy and sustainable alternatives to the current Li-ion battery cathodes that contain Co. However, the severe decay in discharge voltage observed in these cathodes needs to be addressed before they can find commercial applications. A few mechanisms differing in origin have been proposed to explain the voltage fade, which may be caused by differences in material composition, morphology and electrochemical testing protocols. Here, these challenges are addressed by synthesising Li_1.2Ni_0.2Mn_0.6O₂ using three different hydrothermal and solid-state approaches and studying their degradation using the same cell design and c

SUBMITTER: Wen B 

PROVIDER: S-EPMC9595402 | biostudies-literature | 2022 Oct

REPOSITORIES: biostudies-literature