Impact of iron doping on energy storage

Can ni doping improve iron molybdate-based energy storage device?

Ni doping is proposed to improve iron molybdate-based energy storage device. The Ni-doped Fe 2 (MoO 4) 3 nanocomposite exhibits 795.97 F g −1 at 1 A g −1. The nanocomposite for supercapacitor performs 82.44 Wh kg −1 at 849.91 W kg −1. The nanocomposite for lithium-ion battery shows 1109.9 mA h g −1 at 0.1 A g −1. 1. Introduction

How does doping affect the discharge performance of LiFePo 4 cathode materials?

XPS data obvious shows that after doping, the migration energy barrier of Li ions decreases, the activation energy decreases, and the transmission rate of Li ions increases, which can improve the low-temperature discharge performance of LiFePO 4 cathode materials.

Does doping affect low temperature discharge ability of lithium iron phosphate?

The influence mechanism of doping on low temperature discharge was studied through simulation calculation. The discharge ability reached more than 70% at − 40 °C contrast with 25 °C, which greatly improved the low temperature discharge ability of lithium iron phosphate material.

How does doping affect the oxygen vacancy of life material?

With the increase of doping amount, the proportion of oxygen defects increases and decreases, and the oxygen vacancy of LiFe 0.95 Mn 0.05 PO 4 material is the highest through XPS data, and the gram capacity of LiFe 0.95 Mn 0.05 PO 4 material is 146.3 mAh/g. No datasets were generated or analysed during the current study.

What happens to lithium iron phosphate after doping titanium?

Compared with Fig. 1 a, it can be seen from the picture that after doping titanium, the nano-scale characteristics of lithium iron phosphate material, which contribute to the formation of secondary particles, are enhanced and narrowed.

Why is ni doping important for supercapacitors?

This considerable performance could be attributed to the Ni doping induced good conductivity and the synergistic effect between nickel and iron ions. Further, the element doping is also certified to be a meaningful way to improve supercapacitors.