Effect of Ni Doping Variations on Microstructure and Conductivity of Cathode LiNi_xFe_1-x PO₄/C Materials

Abstract:

The cathode material of LiNi_xFe_1-x PO₄ / C in this study was synthesized through a solid process, using Ni ion dopping variations concentration are x = 0.01, 0.02, and 0.03. Effect of dopping variations of Ni ions on cathode material characterized by microstructure and electrical properties using XRD, PSA, SEM and EIS. The results of the XRD analysis showed that LiFePO₄, Li₃Fe₂PO4 and Fe₂O₃ phases were formed. Conductivity Test results showed that conductivity before dopping of LFP / C was 10.24x10^-4 S / cm, and after dopping with Ni ion are x = 0.01; 0.02 and 0.03 have the respective electrical conductivities are LiNi_0.01 Fe_0.99 PO₄ / C of 7.75 x10^-4 S / cm, LiNi_0.02 Fe_0.98 PO₄ / C of 10.334 x10^-4 S / cm, and LiNi_0.03 Fe_{0. 97} PO₄ / C of 4.87 x10^-4 S / cm. With the highest electrical conductivity value on the cathode LiNi_0.02 Fe_0.98 PO₄ / C.

• Periodical: Materials Science Forum (Volume 966)
• Pages: 456-461
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.966.456
• Online since: August 2019
• Authors: Mochammad Zainuri, Bintoro Anang Subagyo, Ega Novialent
• Keywords: Cathode, Dopping Ion, Electrical Conductivity

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