One pot synthesis of Fe2O3-reduced graphene nanocomposite as cathode material for Lithium Ion Batteries

Abstract

Due to their advantages of a high voltage, high specific capacity, long cycling life, low pollution, etc., lithium-ion batteries are widely used in consumer electronics, such as smart phones and laptops. Fe2O3 is chosen as the object of study in this work. Combining Fe2O3 with RGO allows for combining the advantages of a high specific surface area, high stability and high electrical conductivity to produce a new material for high-performance cathodes. The Fe2O3/RGO composite exhibits a remarkably high reversible specific capacity of 1582 mAh/g with a specific discharge capacity of 812 mAh/g at 0.1C after 100 cycles.

Rapid laser synthesis of surfactantless tantalum‐based nanomaterials as bifunctional catalysts for direct peroxide–peroxide fuel cells

“…16 Typically, these metal oxides and complexes have been used for H 2 O 2 reduction, while they are rarely applied to H 2 O 2 oxidation likely due to their limited robustness under harsh operating environments. 18 Though robust noble metals with outstanding catalytic activity can overcome the stability challenge, their prohibitive costs have hindered their widespread applications in the fuel cell industry. 19,20 Alternatively, early transition metals have rarely been applied to facilitate H 2 O 2 redox reactions, though Ti and V have found practical uses in polymerization and redox flow batteries.…”

“…Ample efforts have been invested into fabricating nanomaterials composed of noble metals, 4,8–13 late transition metal oxides, 14,15 and coordination complexes 16,17 to enhance the overall efficiency of fuel cells 16 . Typically, these metal oxides and complexes have been used for H 2 O 2 reduction, while they are rarely applied to H 2 O 2 oxidation likely due to their limited robustness under harsh operating environments 18 . Though robust noble metals with outstanding catalytic activity can overcome the stability challenge, their prohibitive costs have hindered their widespread applications in the fuel cell industry 19,20 .…”