Synthesis of Li2Mn3O7 and Application to Hybrid Capacitor

Kim, Hun-Uk; Shin, Kyoung-Hee; Lee, Bum-Suk; Jeon, Myung-Seok; Jung, Kyu-Nam; Sun, Yang-Kook; Jin, Chang-Soo

doi:2010.1.2.97

J. Electrochem. Sci. Technol > Volume 1(2); 2010 > Article

Article

Journal of Electrochemical Science and Technology 2010;1(2):97-101.
DOI: https://doi.org/10.5229/JECST.2010.1.2.097

Synthesis of Li₂Mn₃O₇ and Application to Hybrid Capacitor

Hun-Uk Kim, Kyoung-Hee Shin, Bum-Suk Lee, Myung-Seok Jeon, Kyu-Nam Jung, Yang-Kook Sun, Chang-Soo Jin

Department of Chemical Engineering, Hanyang University;Korea Institute of Energy research;Korea Institute of Energy research;Korea Institute of Energy research;Korea Institute of Energy research;Department of Chemical Engineering, Hanyang University;Korea Institute of Energy research;

Abstract

In order to apply hybrid capacitor, $Li_2Mn_3O_7$ was synthesized by combustion method using $LiNO_3$, $Li(CH_3COO){cdot}2H_2O$ and $Mn(CH_3COO){cdot}4H_2O$. Spinel pattern was identified the samples calcined over $400^{circ}C$ in XRD. Intensity of $Mn_2O_3$ peak increased as the calcination temperature increased. To decide n/p ratio and to investigate electrochemical properties, charge-discharge tests of Li/$Li_2Mn_3O_7$ and Li/AC half-cell were carried out. Applying to AC/$Li_2Mn_3O_7$ hybrid capacitor, it had high discharge capacitance of 32.8 F/cc at 100 mA/g.

Keywords: $Li_2Mn_3O_7$, Hybrid capacitor, Decomposition, Discharge capacitance