JKPK (JURNAL KIMIA DAN PENDIDIKAN KIMIA), Vol. 5, No. 1, 2020 pp. 24-31 Chemistry Education Study Program, Universitas Sebelas Maret ISSN 2503-4146 https://jurnal.uns.ac.id/jkpk ISSN 2503-4154 (online) 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, and Agus Purwanto* Postgraduate Chemical Engineering, Faculty of Engineering, Universitas Sebelas Maret Jl. Ir. Sutami No. 36 A, Surakarta 57126, Central Java, Indonesia * Correspondence: Tel/Fax (0271)-632112, email:
[email protected] Received: May 07, 2019 Accepted: April 04, 2020 Online Published: April 30, 2020 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.