Work

Engineering Diffusivity and Operating Voltage in Lithium Iron Phosphate through Transition-Metal Doping

Year: 2017

Type: article

Abstract: At base, creating better lithium-ion batteries is all about understanding the diffusion of Li${}^{+}$, particularly its reversible intercalation in materials like olivine phosphates. This study shows that for a given diffusion path for Li${}^{+}$, the forward and backward activation barriers can be manipulated simply by choosing the level of doping $x$ in LiFe${}_{1-x}{M}_{x}$PO${}_{4}$. This simple knob can tune three of the most important electrochemical parameters: diffusivity, operating voltage, and band gap. The insight from this study should also apply to other transition-metal oxide cathode materials.

Source: Physical Review Applied

DOI: 10.1103/physrevapplied.7.034007

Authors: Ajit Jena, B. R. K. Nanda

Institution: Indian Institute of Technology Madras

Language: English

Topic: Advancements in Battery Materials

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

SDG: Affordable and clean energy

Open Access status: green

Funder: Nissan Motor Company