Structure and electrochemical performance of FeF3/V2O5 composite cathode material for lithium-ion battery

Structural and electrochemical properties of Al3+ doped V2O5 nanoparticles prepared by an oxalic acid assisted soft-chemical method

“…However, it is well known that pristine bulk V 2 O 5 is not an appropriate cathode material because of its low lithium diffusion coefficient and poor structural stability with lithium insertion/extraction, which lead to bad battery performance such as poor capacity retention and low rate capability. Recently, many studies have been focused on the composite or novel structured V 2 O 5 cathode materials [5][6][7][8]. Especially, the nanostructured materials exhibit better electrochemical performance with respect to bulk V 2 O 5 by virtue of their morphology properties.…”

FeF3 microspheres anchored on reduced graphene oxide as a high performance cathode material for lithium ion batteries

“…6(c). Bare FeF 3 shows a reversible capacity of 49.8 mAhg À1 at the 50 th cycle with a poor capacity fading rate of 1.14% per cycle [16,18,20,36]. This inferior cycling stability is attributed to the large particle size and low electrical conductivity [16,18,36].…”

“…However, its practical application has been hampered by the low electrical conductivity and slow diffusion rate of lithium ions, caused by the highly ionic FeeF chemical bond. Numerous attempts have been made to solve these problems by fabricating nanostructures with porosity and wire-like shapes [13,14], down-sized nanoparticles [15], Co-doped nanocrystals [16], and nanocomposites with Fe 2 O 3 [17], V 2 O 5 [18], and conductive carbon matrices [19e24]. In particular, FeF 3 /graphene composites showed highly improved electrochemical performances compared to bare FeF 3 because the flexible graphene sheets effectively increase the electrical conductivity of FeF 3 by forming large intimate contacts in the composites [24e27].…”

A fundamental study on carbon composites of FeF3·0.33H2O as open-framework cathode materials for calcium-ion batteries

“…On the other hand, the high iconicity of iron fluoride shows an electronically insulating character 12 . To improve conductivity, composite materials with conductive materials such as MoS2 13 , V2O5 14 , single-wall carbon nanotube 11 , graphitic oxide 15 , activated carbon 16 and carbon black 12 made by several methods, such as liquid-phase method and mechanical ball-milling method, were reported. Among composite methods, reported mechanical ball-milling method can also perform nanosizing of particles at the same time 12 .…”