Accelerated Screening\nof High-Energy Lithium-Ion Battery\nCathodes

Abstract

The need for better battery materials has driven research\ninto\nunderexplored complex phase spaces. Herein, we perform the first high-throughput\nelectrochemical study of the entire Li–Ni–Mn–O\nsystem of interest for next-generation high-energy cathodes. We first\nadapt a high-throughput electrochemical system to cycle 64 mg-scale\ncathodes simultaneously and demonstrate its effectiveness with two\ntest materials: LiCoO₂ and Li­[Ni_1/3Mn_1/3Co_1/3]­O₂. The average values for the electrochemical\nproperties obtained for the combinatorial samples show excellent agreement\nwith literature, and cell-to-cell reproducibility is about 7%. The\nresults for the Li–Ni–Mn–O system deepens our\nunderstanding dramatically and will guide the rational design of high-energy\ncathodes.