Abstract
LiFeOHCh family of materials is a family of materials developed for supraconductivity application, linked with iron mixed valence properties 1. In this paper, we present their great opportunity as active material for lithium ion batteries. The electrochemical characterizations show a sustainable reversible capacity of 250 mAh/g at C/10 (up-taking 1Li at an average potential of 1.65V) and interesting performances in quick charge with 230 mAh/g at 1C and 130 mAh/g at 5C, putting this material as a good challenger of Li4Ti5O12 2. The lithiation mechanism of this material through cycling has been investigated and shows very original results: insertion of lithium and reduction of the hydroxyl into gaz hydrogen H2. Zhou, X. et al. Superconductivity and magnetism in iron sulfides intercalated by metal hydroxides. Chem. Sci. 8, 3781–3788 (2017).Sun, X. Advances in spinel Li4Ti5O12 anode materials for lithium-ion batteries. New J. Chem. 39, 38–63 (2014). Figure 1
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