Dendrite inhibited and dead lithium activated dual-function additive for lithium metal batteries.

In this study, 2-fluoro-5-iodopyridine (2-F-5-IPy) was used as an electrolyte additive, which can not only protect the negative electrode effectively by forming a stable SEI, but also convert dead lithium into active lithium. Benefits from this are a capacity retention of a Li‖LiFePO cell after 300 cycles from 36.5% to 89.

Multifunctional electrolyte additive for realizing high-temperature and high-voltage lithium metal batteries.

Methyl 1-1,2,4-triazole-3-carboxylate (MTC) was added into lithium metal batteries as an electrolyte additive, and not only did this addition lead to formation of solid electrolyte interfaces to protect both the anode and cathode, but the added MTC also served as a Lewis base in removing HF from the electrolyte to prevent the electrolyte from deteriorating. Therefore, the addition of MTC, in an appropriate amount, can be very effective at improving the electrochemical performance of lithium metal batteries.

N doped carbon coated VO nanobelt arrays growing on carbon cloth toward enhanced performance cathodes for lithium ion batteries.

Highly flexible, binder-free cathodes for lithium ion batteries were fabricated by utilizing N doped carbon to coat VO (VO@N-C) nanobelt arrays growing on carbon cloth. Such a robust architecture endows the electrode with effective ion diffusion and charge transport, resulting in high rate capability (135 mA h g at 10C) and excellent cycling performance (215 mA h g after 50 cycles at 0.5C).

Carbon Nanohorns Carried Iron Fluoride Nanocomposite with ultrahigh rate lithium ion storage properties.

Novel hierarchical carbon nanohorns (CNHs) carried iron fluoride nanocomposites have been constructed by direct growth of FeF3·0.33H2O nanoparticles on CNHs. In the FeF3·0.

In situ preparation of 3D graphene aerogels@hierarchical Fe3O4 nanoclusters as high rate and long cycle anode materials for lithium ion batteries.

We describe a novel strategy for in situ fabrication of hierarchical Fe3O4 nanoclusters-GAs. Fe3O4 NCs-GAs deliver excellent rate capability (the reversible capacities obtained were 1442, 392 and 118 mA h g(-1) at 0.1C, 12C and 35C rates), and a high reversible capacity of 577 mA h g(-1) over 300 cycles at the current density of 5.

Confined iron fluoride@CMK-3 nanocomposite as an ultrahigh rate capability cathode for Li-ion batteries.

A facile and advanced architecture design of FeF3·0.33H2O impregnated CMK-3 nanocomposite (FeF3·0.33H2O@CMK-3) is presented.

An in situ ionic-liquid-assisted synthetic approach to iron fluoride/graphene hybrid nanostructures as superior cathode materials for lithium ion batteries.

A tactful ionic-liquid (IL)-assisted approach to in situ synthesis of iron fluoride/graphene nanosheet (GNS) hybrid nanostructures is developed. To ensure uniform dispersion and tight anchoring of the iron fluoride on graphene, we employ an IL which serves not only as a green fluoride source for the crystallization of iron fluoride nanoparticles but also as a dispersant of GNSs. Owing to the electron transfer highways created between the nanoparticles and the GNSs, the iron fluoride/GNS hybrid cathodes exhibit a remarkable improvement in both capacity and rate performance (230 mAh g(-1) at 0.