Effect of multi-walled carbon nanotubes on the electrochemical performance of LiVPO4F cathode material for rechargeable lithium-ion batteries

Long-life and high-rate LiVPO4F/C nanocrystals modified with graphene as cathode material for lithium-ion batteries

“…5. It can be observed that the voltage profiles for Li ions extraction in the as-synthesized samples are characterized by two spaced voltage plateaus and the subsequent discharge processes only present a single voltage plateau, similar to the previous report [10]. The initial discharge capacity of G-LVPF/C is 151.6 mAhg − 1 , which is much higher than that of pristine LVPF/C sample (137.3 mAhg −1 ).…”

“…Modifying LiVPO 4 F with carbon [7][8][9] seems to be a very effective method. For example, carbon nanotubes (CNTs) were used as a novel carbon source because of their excellent electrical conductivity and network structure [10]. Carbon can control particle growth during the heating process and enhance the surface electronic conductivity; thus excellent electrochemical performance of LiVPO 4 F can be obtained.…”

Integrated Thin Film Battery Design for Flexible Lithium Ion Storage: Optimizing the Compatibility of the Current Collector‐Free Electrodes

“…Figure a records the charge/discharge curves of 20%GO‐LVPF/LMO cathode during the 1st, 5th, 10th, 20th at 0.1 C (1 C = 0.15 A g −1 ). During the charge process, the two plateaus at around 3.96 and 4.18 V were observed, corresponding to Li + extraction with x value range as 0 ≤ x ≤ 0.5 and 0.5 ≤ x ≤ 1 in spinel‐type Li x Mn 2 O 4 , respectively . The subsequent plateau at 4.30 V, is consistent with Li + extraction process from the tavorite LiVPO 4 F phase, which corresponds to the phase transformation of LiVPO 4 F intoVPO 4 F .…”

Improving the Electrochemical Performances of LiVPO4F/C Cathode by Doping AlF3 with Dual Functions for Lithium Ion Batteries

“…Inorganic carbon, such as acetylene black,,, and high surface area carbon, are not only used as reducing agent but also conductive carbon in CTR method. The coating of multi‐walled carbon nanotube with exceptional conductive and mechanical at low content can form a conductive network . Recently, graphene attracts great attentions due to its excellent conductivity, large surface area, good flexibility and chemical stability.…”