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All Journal JKPK (Jurnal Kimia dan Pendidikan Kimia)
Diajeng Putri Suciutami
Postgraduate Chemical Engineering, Faculty of Engineering, Universitas Sebelas Maret, Jl. Ir. Sutami No. 36 A, Surakarta, 57126, Central Java
Chemical Engineering, Chemistry & Bioengineering Chemistry

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Influence Comparison of Precursors on LiFePO4/C Cathode Structure for Lithium Ion Batteries Luthfi Mufidatul Hasanah; Cornelius Satria Yudha; Soraya Ulfa Muzayanha; Diajeng Putri Suciutami; Atika Aulia Novita Sari; Inayati Inayati; Agus Purwanto
JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 5, No 1 (2020): JKPK (Jurnal Kimia dan Pendidikan Kimia)
Publisher : Program Studi Pendidikan Kimia FKIP Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (870.965 KB) | DOI: 10.20961/jkpk.v5i1.29874

Abstract

Electricity is the most energy demanded in this era. Energy storage devices must be able to store long-term and portable. A lithium ion battery is a type of battery that has been occupied in a secondary battery market. Lithium iron phosphate / LiFePO4 is a type of cathode material in ion lithium batteries that is very well known for its environmental friendliness and low prices. LiFePO4/C powder can be obtained from the solid state method. In this study the variables used were the types of precursors : iron sulfate (FeSO4), iron oxalate (FeC2O4) and FeSO4+charcoal. Synthesis of LiFePO4/C powder using Li:Fe:P at 1:1:1 %mol. Based on the XRD results, LiFePO4/C from FeSO4+charcoal shows the LiFePO4/C peaks according to the JCPDS Card with slight impurities when compared to other precursors. XRD results of LiFePO4/C with precursors of FeSO4 or FeC2O4 shows more impurities peaks. This LiFePO4/C cathode is paired with lithium metal anode, activated by a separator, LiPF6 as electrolyte. Then this arrangement is assembled become a coin cell battery. Based on the electrochemical results, Initial discharge capacity of LiFePO4/C from the FeSO4 precursor is 19.72 mAh/g, while LiFePO4/C with the FeC2O4 precursor can obtain initial discharge capacity of 17.99 mAh/g, and LiFePO4/C with FeSO4+charcoal exhibit initial discharge capacity of 21.36 mAh/g. This means that the presence of charcoal helps glucose and nitrogen gas as reducing agents.
Co-Authors Atika Aulia Novita Sari Cornelius Satria Yudha Inayati Inayati Luthfi Mufidatul Hasanah Purwanto, Agus Soraya Ulfa Muzayanha