Pyrite film synthesized for lithium-ion batteries

Electrochemical properties of nickel-precipitated pyrite as cathode active material for lithium/pyrite cell

“…However, among them, the lithium/iron disulfide (FeS 2 ) system is the most attractive; this is because in comparison with LiCoO 2 , FeS 2 has a higher theoretical energy density of 1273 Wh/kg based on 4e − /FeS 2 (assuming complete reaction to form the product Li 2 S and amorphous Fe); this value is two to three times the energy density of lithium ion batteries. In addition, FeS 2 ore (pyrite) is environmentally friendly, abundant, and inexpensive ($∼0.5 kg −1 , compared to $30∼80 kg −1 for lithium metal oxides) [4,5].…”

Perfect reversibility of the lithium insertion in FeS2: The combined effects of all-solid-state and thin film cell configurations

“…Hence, a way to solve this problem consists in using a solid electrolyte, as recently demonstrated by Yersak et al, in bulk solid-state batteries leading to a reversible capacity higher than 700 mA h·g − 1 at 30 °C during 20 cycles [6]. Only few studies were conducted on the electrochemical behavior of iron sulfide thin films [8][9][10]. Siyu et al reported a rather fast capacity loss in liquid electrolyte for sol-gel prepared FeS 2 films [9].…”

“…Only few studies were conducted on the electrochemical behavior of iron sulfide thin films [8][9][10]. Siyu et al reported a rather fast capacity loss in liquid electrolyte for sol-gel prepared FeS 2 films [9]. Strauss et al highlighted the better capacity retention of sputtered thin films (0.9 μm thick) when tested in polymer electrolytes at 125 °C, with a capacity (~1750 mA h·cm − 3 ) remaining far below the theoretical value [10].…”

One-pot hydrothermal synthesis and characterization of FeS2 (pyrite)/graphene nanocomposite

“…Moreover, FeS 2 is composed of abundant, inexpensive and non-toxic elements. Due to these interesting properties, FeS 2 has been investigated for applications in photovoltaic devices [23,24] and lithium-ion batteries [22,25]. FeS 2 has been prepared by a variety of techniques, including hydrothermal, solvothermal, metal organic chemical vapor deposition (MOCVD), and sulfurization of iron or iron oxide film [22,[26][27][28][29][30].…”