%0 Journal Article %T A novel aqueous Li<sub>4</sub>Fe(CN)<sub>6</sub> cathode and hydrophobic ionic liquid electrolyte combined lithium-ion battery %J Advanced Materials Proceedings %I International Association of Advanced Materials %Z 2002-4428 %A Mandal, Bikash %A Basumallick, Indranarayan %A Ghosh, Susanta %D 2017 %\ 11/01/2017 %V 2 %N 11 %P 745-748 %! A novel aqueous Li<sub>4</sub>Fe(CN)<sub>6</sub> cathode and hydrophobic ionic liquid electrolyte combined lithium-ion battery %K Li4Fe(CN)6 aqueous cathode %K cost effective method %K hydrophobic ionic liquid electrolyte %K charge-discharge %K Lithium-ion battery %R 10.5185/amp.2017/588 %X Present study reports an easy and cost-effective method of synthesis of Li4Fe(CN)6 cathode from K4Fe(CN)6.3H2O and LiClO4 in aqueous medium for its use in lithium-ion battery. The synthesized Li4Fe(CN)6 is characterized by UV-Vis, FTIR and cyclic-voltammetry studies. A special laboratory model lithium-ion battery is designed, where aqueous Li4Fe(CN)6 solution acts as a cathode, metallic lithium&nbsp; as anode and 1 molar solution of LiPF6 dissolved in water immiscible ionic liquid, 1-Butyl-3-methylimidazolium hexafluorophosphate (BMIM-PF6) as electrolyte. The cell exhibits an open circuit potential of 3.12 volt and a good charge-discharge cycling behaviour. The cell delivered a maximum discharge capacity of 86 mAhg-1 (theoretical capacity 112 mAhg-1) at 0.2 C rates with an average discharge potential of 2.1 volts. Although the ionic liquid is a little bit cost intensive, but the easy synthesis methodology with the cheapest raw materials and overall cycling efficiency, makes this technology available as a green economical energy storage device in the current battery industry. &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Copyright &copy; 2017 VBRI Press. %U https://amp.iaamonline.org/article_16284_94a49f3be8a64e16048be00baa6a35a1.pdf