Beletskii, E.V.; Volkov, A.I.; Kharisova, K.A.; Glumov, O.V.; Kamarou, M.A.; Lukyanov, D.A.; Levin, O.V. Fall and Rise: Disentangling Cycle Life Trends in Atmospheric Plasma-Synthesized FeOOH/PANI Composite for Conversion Anodes in Lithium-Ion Batteries. ChemEngineering2024, 8, 24.
Beletskii, E.V.; Volkov, A.I.; Kharisova, K.A.; Glumov, O.V.; Kamarou, M.A.; Lukyanov, D.A.; Levin, O.V. Fall and Rise: Disentangling Cycle Life Trends in Atmospheric Plasma-Synthesized FeOOH/PANI Composite for Conversion Anodes in Lithium-Ion Batteries. ChemEngineering 2024, 8, 24.
Beletskii, E.V.; Volkov, A.I.; Kharisova, K.A.; Glumov, O.V.; Kamarou, M.A.; Lukyanov, D.A.; Levin, O.V. Fall and Rise: Disentangling Cycle Life Trends in Atmospheric Plasma-Synthesized FeOOH/PANI Composite for Conversion Anodes in Lithium-Ion Batteries. ChemEngineering2024, 8, 24.
Beletskii, E.V.; Volkov, A.I.; Kharisova, K.A.; Glumov, O.V.; Kamarou, M.A.; Lukyanov, D.A.; Levin, O.V. Fall and Rise: Disentangling Cycle Life Trends in Atmospheric Plasma-Synthesized FeOOH/PANI Composite for Conversion Anodes in Lithium-Ion Batteries. ChemEngineering 2024, 8, 24.
Abstract
Various iron oxides have been proven to be promising anode materials for metal-ion batteries due to their natural abundance, high theoretical capacity, ease of preparation, and environmental friendliness. However, the synthesis of iron oxide-based composites requires complex approaches, especially when it comes to composites with intrinsically conductive polymers. In this work we propose a one-step microplasma synthesis of a polyaniline-coated urchin-like FeOOH nanoparticles (FeOOH/PANI) for application as anode in lithium-ion batteries. The material shows excellent electrochemical characteristics, providing initial capacity of ca. 1600 mA∙h∙g−1 at 0.05 A∙g−1 and 900 mA∙g−1 at 1.2 A∙g−1. Further cycling lead to capacity decrease to 150 mA∙h∙g−1 by the 60th cycles, followed by a recovery that maintained the capacity at 767 mA∙h∙g−1 after 2000 cycles at 1.2 A∙g−1 and restored full initial capacity of 1600 mA∙h∙g−1 at low current density of 0.05 A∙g−1. Electrochemical milling of the material caused such interesting behavior of the material, and we confirmed this phenomenon by a combination of physico-chemical and electrochemical techniques. The anodes also exhibit high performance in a full cell with NMC532. NMC532//FeOOH/PANI full cell provided energy density of 224 Wh∙kg−1 which is comparable to the reference cell with graphite anode (264 Wh∙kg−1).
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