To evaluate the potential of Na-ion batteries, we contrast in this work the difference between Na-ion and Li-ion based intercalation chemistries in terms of three key battery properties – voltage, phase stability and diffusion barriers. The compounds investigated comprise the layered AMO2 and AMS2 structures, the olivine and maricite AMPO4 structures, and the NASICON A3V2(PO4)3 structures. The ...

We have been developing sintered multilayer oxide-based all-solid-state batteries. Anode active material rutile-type TiO2 was not reacted with amorphous Na superionic conductor (NASICON)-type solid electrolyte Li1.5Al0.5Ge1.5(PO4)3 (LAGP) even after at 600 °C in a nitrogen atmosphere from the XRD patterns. The charge/discharge behavior of electrochemical measuring cell (when using non-aqueous e...

Na+ superionic conductor (NASICON)-structured Na4VMn(PO4)3 (NVMP) possesses stable cycling performance at 2.5–3.8 V by replacing with lower cost Mn but suffers rapid capacity decay when further widening the voltage to 2.5–4.2 V, owing a less V4+/V5+ redox couple. Herein, stabilize couple and improve reversibility, series of carbon-coated NVMP (NVMP@C) different V/Mn ratios are compared, among w...

NASICON-structured glass–ceramics based on the Li1+xCrxGeTi1–x (PO4)3 (0 ≤ x 1) system are synthesized by melt-quenching method followed glass crystallization. Since Ti4+ and Cr3+ have approximately same crystal radius in octahedral coordination, this aliovalent substitution should avoid considerable changes cell volume, thus allowing us to evaluate true contribution of a tetravalent cation tri...

A NASICON-type LiZr2(PO4)3 (LZP) and Li1.2Al0.2Zr1.8(PO4)3 (LAZP) anode materials are synthesized via a facile method, were characterized by variety of structural techniques, investigated the electrochemical performance for rechargeable battery applications. highly stable rhombohedral phase LAZP is noticed at room temperature, with discharge capacity 909 mAh.g−1, which 1.6 times higher than tha...