Abstract
The effect of Cr or Cu doping on the electronic conductivity of LiCoPO 4 was investigated. It was observed that neither type of doping for the samples heated under air lead to electronic conductivity values above ∼10 −9 S cm −1. Based on these results it is suggested that the room temperature electronic conductivity of LiCoPO 4 is much lower than that for LiFePO 4. For the case of the doped samples heated under argon, they all exhibited an electronic conductivity ∼10 −4 S cm −1. It is likely that the enhanced conductivity of the LiCoPO 4 samples heated under argon versus air is a result of conductive Co 2P along LiCoPO 4 particle surfaces that forms as a result of carbothermal reduction during heat-treatment. The electronic conductivity of the LiCoPO 4 samples heated under high-purity argon is essentially independent of dopant type and concentration. This is because it is the conductive Co 2P layer that controls the electronic conductivity of the doped samples overriding any possible dopant effects.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
