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Lithium-ion Battery (LIB) is one of the best batteries for daily application, but lithium in the world is lack of abundance, so its worried it will be out of stock in the next few years. Another alternative is using the potassium ion based batteries. The most common cathode well used on potassium ion battery is Prussian Blue Like (PBL) compound. The purpose of this research is to synthesize PBL compound of zinc(II) chloride, quinoline, chromium(III) chloride hexahydrate, and potassium thiocyanate with mole ratio of 1:2:1:6 as well as the characterization of complex compound as material for Kalium Ion Battery. Synthesized Complex compounds form a dark greeny purple crystals and has a melting point of 182-185 celcius degree and act as ionic compound. Two peaks in the UV-Vis spectra indicate the presence of transition metal Cr3+ ion. XRD and EDX analysis showed the synthesized compound has empirical formula K[Cr(C9H7N)2(SCN)2][Zn(SCN)4], FT-IR analysis proved the presence of quinoline and thiocyanate ligands in complex compounds. Analysis of cyclic voltammetry showed the complex compounds has a reduction potential of -0.55 volts.