Constructing p-type substitution induced by Ca²⁺ in defective Na₃V_2−xCa_x(PO₄)₃/C wrapped with conductive CNTs for high-performance sodium-ion batteries

Abstract

Na3V2(PO4)3 (NVP) with high tap density is considered to be a prospective cathode due to its low cost, ideal specific capacity. However, the low ionic/electronic conductivity become the main factors...

Simultaneous Mn and Cl doping on Na3V2(PO4)3 with high performance for full sodium-ion batteries

“…Jiang et al adopted the method of carbon nanotube coating and partial replacement of V by Ca, and the prepared sample provided a capacity of up to 117.4 mA h g −1 at 0.1C. 32 In addition, the reduction of V also reduces the damage to the human body. Considering that the current heteroatom doping is mostly a partial substitution of a single element, there are relatively few exploration mechanisms for the co-substitution of multiple elements.…”

Preparation of Na3V2(PO4)3 Cathode Materials by Hydrothermal Assisted Sol-Gel Method for Sodium -Ion Batteries

“…Additionally, NVP exhibits a higher storage voltage, with the charge-discharge platform situated at approximately 3.4 V. However, compared to metal oxide cathode materials, NVP displays relatively lower electrical conductivity, which has impeded its progress. Further various modifications are currently carried out by optimizing the synthesis process through controlled morphology [10][11][12] , multiphase synthesis [13][14] , and ion doping [15][16] to improve the electrochemical properties of NVP [17] .…”