Pyrite FeS₂ microspheres wrapped by reduced graphene oxide as high-performance lithium-ion battery anodes

Abstract

A composite of pyrite FeS2 microspheres wrapped by reduced graphene oxide (FeS2/rGO) has been synthesized by a facile one-step solvothermal method and applied as an anode in lithium ion batteries (LIBs).

Sulfur‐Doped Graphene with Iron Pyrite (FeS2) as an Efficient and Stable Electrocatalyst for the Iodine Reduction Reaction in Dye‐Sensitized Solar Cells

“…In addition to XPS (see SI Figure S2e and f for detail), X‐ray diffraction (XRD) analysis was used to evaluate the composition of the prepared FeS 2 sample. The majority of the XRD diffraction peaks in Figure a can be readily indexed to a cubic lattice of pyrite FeS 2 and are in good agreement with the previously published literature . Based on the XRD pattern, we note that some other components such as oxidized Fe (Fe 3 O 4 ) and sulfur were present in the sample.…”

Effective iron-molybdenum-disulfide counter electrodes for use in platinum-free dye-sensitized solar cells

“…Fig. 3a shows the TEM image of the FeS 2 particle, in which the lattice fringes are clearly visible with a distance of 0.27 nm, which is in good agreement with the spacing of the (200) plane of FeS 2 [31]. In Fig.…”

Critical Insight into the Relentless Progression Toward Graphene and Graphene‐Containing Materials for Lithium‐Ion Battery Anodes

“…Following the trend begun in 2014, this year was mainly characterized by a large number of works focused on long-term cyclability tests (e.g., ≥1000 cycles), generally performed at medium/high currents (e.g., ≥1 A g −1 ). Indeed, graphene-containing insertion (e.g., Li 3 VO 4 , [351][352][353] TiO 2 [ 354,355 ] and LTO [ 356 ] ), conversion (e.g., CoFe 2 O 4 , [ 357 ] Co 3 O 4 , [ 358 ] FeS 2 , [ 359 ] ) and alloying (e.g., Si [360][361][362] and SnO 2 [ 363 ] ) binary hybrids, as well as ternary analogues, [364][365][366][367] showed remarkable results in terms of specifi c gravimetric capacity retained after long cycling. Moreover, other intermetallic compounds (e.g., SnSb [ 368,369 ] ) and metal oxides (e.g., Fe 3 O 4 [ 370,371 ] and MnO [ 372 ] ), when combined with graphene, showed improved cycling stability with respect to their bare analogues.…”