Tailored <scp> HoFeO <sub>3</sub> –Ho <sub>2</sub> O <sub>3</sub> </scp> hybrid perovskite nanocomposites as stable anode material for advanced lithium‐ion storage
Anh Tien Nguyen, Weldejewergis Gebrewahid Kidanu, В. О. Миттова, Van Hoang Nguyen, Dinh Quan Nguyen, Mỹ Loan Phụng Lê, I. Ya. Mittova, Il Tae Kim, Tuan Loi Nguyen
Abstract
In this study, a novel hybrid HoFeO3–Ho2O3 nanocomposite perovskite composite is synthesized via a simple coprecipitation method as a stable, high-capacity anode material for lithium-ion batteries. The structure and morphology of the material are characterized using advanced tools such as X-ray diffraction, scanning electron microscopy, and transmission electron microscopy, all of which confirm the successful synthesis of nanocrystals with highly interconnected porous nanohallows. At 0.1 A g−1, the HoFeO3–Ho2O3 nanocomposite electrodes exhibit a stable reversible capacity of 787 mAh g−1 with a coulombic efficiency exceeding 99.5%. This capacity is nine times higher than that of Ho2O3 and 50% higher than that of Fe2O3 balance samples. This study provides new insights into the use of perovskite-structured materials with superior electrochemical performance for advanced lithium-ion storage.