Abstract
This personal narrative relates to the discovery in 1981 of stoichiometric LiM2O4 spinel electrodes (where M = metal cation) for lithium-ion batteries by the Goodenough group at Oxford University, UK, and the subsequent identification and evolution of stable lithiated-spinel Li2M2O4 (or LiMO2) cathodes at the Council for Scientific and Industrial Research in South Africa and Argonne National Laboratory (USA). The competition that occurs between the formation of lithiated-spinel and layered (LiMO2) structures at 400 °C, and recent efforts to design high-capacity, Mn-rich composite cathodes with partial disorder, are discussed. The paper is written in honor of John Goodenough’s 100th birthday.
Publisher
The Electrochemical Society
Subject
Materials Chemistry,Electrochemistry,Surfaces, Coatings and Films,Condensed Matter Physics,Renewable Energy, Sustainability and the Environment,Electronic, Optical and Magnetic Materials
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