Synthesis of Li<sub>2</sub>PtO<sub>3</sub> Thin Film Electrode by an Electrostatic Spray Deposition Technique

Oh, Heung-Min; Kim, Ji-Young; Lee, Kyung-Keun; Chung, Kyung-Yoon; Kim, Kwang-Bum

doi:2010.1.1.45

J. Electrochem. Sci. Technol > Volume 1(1); 2010 > Article

Article

Journal of Electrochemical Science and Technology 2010;1(1):45-49.
DOI: https://doi.org/10.5229/JECST.2010.1.1.045

Synthesis of Li₂PtO₃ Thin Film Electrode by an Electrostatic Spray Deposition Technique

Heung-Min Oh, Ji-Young Kim, Kyung-Keun Lee, Kyung-Yoon Chung, Kwang-Bum Kim

Department of Material Science and Engineering, Yonsei University;Department of Material Science and Engineering, Yonsei University;Department of Material Science and Engineering, Yonsei University;Advanced Battery Center, Korea Institute of Science and Technology;Department of Material Science and Engineering, Yonsei University;

Abstract

$Li_2PtO_3$ thin film electrodes, which might be possible candidate for the cathode materials for implantable batteries, were synthesized using an electrostatic spray deposition (ESD) technique onto a platinum foil substrate. Single phase $Li_2PtO_3$with a structure similar to layered $LiCoO_2$ structure were synthesized by spraying a precursor solution of $CH_3CO_2Li2H_2O$ in ethanol onto a Pt substrate at temperatures ranging from 200 to $400^{circ}C$ followed by annealing at above $600^{circ}C$. Lithium carbonate was the only major phase at temperatures up to $500^{circ}C$. The X-ray diffraction (XRD) peaks of the Pt foil substrate and lithium carbonate disappeared at temperatures >$600^{circ}C$. The volumetric capacity of the $Li_2PtO_3$ thin film synthesized using the ESD technique was approximately 817 mAh/$cm^3$, which exceeded that of $LiCoO_2$ (711 mAh/$cm^3$).

Key Words: $Li_2PtO_3$, Electrostatic spray deposition (ESD) technique, Thin-film electrodes, Lithium secondary batteries, Cathode material