High-Voltage All-Solid-State Na-Ion-Based Full Cells Enabled by All NASICON-Structured Materials.

Na super ionic conductor (NASICON)-structured materials have evolved to play many critical roles in battery systems because of their three-dimensional framework structures. Here, by coupling NASICON-structured NaV(PO)OF cathodes and NaV(PO) anodes, an asymmetric Na-ion-based full cell exhibits two flat voltage plateaus at about 2.3 and 1.

Multi-heteroatom doped carbon coated NaV(PO) derived from ionic liquids.

Multi-heteroatom (N, S and F) doped carbon coated NaV(PO) (labeled as NVP/C-ILs) derived from an ionic liquid 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([EMIM]TF2N) has been successfully fabricated. The as-prepared NaV(PO) particles are well dispersed and closely coated with a multi-heteroatom (N, S and F) doped carbon layer. As a cathode for sodium-ion batteries, the NVP/C-ILs electrode exhibits high reversible specific capacity (117.

Anthracite-Derived Dual-Phase Carbon-Coated LiV(PO) as High-Performance Cathode Material for Lithium Ion Batteries.

In this study, low cost anthracite-derived dual-phase carbon-coated LiV(PO) composites have been successfully prepared via a traditional solid-phase method. XRD results show that the as-prepared samples have high crystallinity and anthracite introduction has no influence on the LVP crystal structure. The LVP/C particles are uniformly covered with a dual-phase carbon layer composed of amorphous carbon and graphitic carbon.

Investigations on Zr incorporation into LiV(PO)/C cathode materials for lithium ion batteries.

LiV(PO)/C (LVP/C) composites have been modified by different ways of Zr-incorporation via ultrasonic-assisted solid-state reaction. The difference in the effect on the physicochemical properties and the electrochemical performance of LVP between Zr-doping and ZrO-coating has also been investigated. Compared with pristine LVP/C, Zr-incorporated LVP/C composites exhibit better rate capability and cycling stability.