Effects of Silver Nanowires on The Electro-chemical Performance of LiFePO4

Abstract

Lithium iron phosphate (LiFePO 4 ) is a promising cathode material for lithium-ion batteries. However, an important drawback of this material is its poor conductivity. In this approach, a simple approach is firstly proposed to enhance the conductivity of LiFePO 4 cathodes by dispersing conductive Ag nanowires to these cathodes. LiFePO 4 /Ag nanowires composite cathodes were characterized by X-ray diffraction (XRD) and field emission scanning electron microscope (FSEM), and their electrochemical performance were evaluated by charge/discharge tests. It is demonstrated that the capacity and rate capability of LiFePO 4 /Ag nanowires composite cathodes can be improved considerably by the addition of Ag nanowires. Especially, discharge capacities are improved from ~110 mAh g -1 of LiFePO 4 cathodes to ~150 mAh g -1 for LiFePO 4 /Ag nanowires composite cathodes at 0.2 C. Therefore, LiFePO 4 /Ag nanowires cathodes can be used as an attractive positive electrode candidate for lithium-ion batteries.

Identification of Volatile Biomarkers of Gastric Cancer Cells and Ultrasensitive Electrochemical Detection based on Sensing Interface of Au-Ag Alloy coated MWCNTs

“…Bali, et al reported a dual-template imprinted polymer film containing dispersed multi-walled carbon nanotubes ceramic electrode was successfully used for ultra trace simultaneous analysis of ascorbic acid and dopamine, which was large enough to allow selective and sensitive analysis of one in the presence of other, without any cross reactivity, interferences and false-positives 31 . Espinosa, et al reported that multi-walled carbon nanotubes (MWNTs) covered with gold or silver nanoclusters, as gas sensitive materials, could improve the selectivity of sensors 32 , 33 . We also prepared bio-mimetically synthesized Ag@BSA microspheres as a novel electrochemical biosensing interface, realized KB cells with a lower detection limit of 20cells mL -1 34 .…”