β-FeOOH thin film as positive electrode for lithium-ion cells

β-FeOOH nanorods enriched with bulk chloride as lithium-ion battery cathodes

“…4a displays the cycle performance of the products at 0.05 C between 1.5 and 4.2 V. Sample A can maintain 92.8 % of the highest discharge capacity (248 mAh g -1 ) after 40 cycles, with an average capacity fading of 0.5 mAh g -1 per cycle. This result surpasses most previously reports on β-FeOOH cathodes[12,14,16,17]. The discharge capacity of sample B, on the other hand, has merely 66 % retention (168 mAh g -1 )…”

Peculiarities of heating-induced transformations in Fe(III) β-oxyhydroxides

“…coordination indicated, shows that new Fe 3+ position of annealed b-FeOOH,0.01F, similarly to b-FeOOH,Cl [3], was formed by dehydration of surface octahedrons. Because of some mutual influence of parameters when using three-four doublets to fit Mö ssbauer spectra (Table 5), the understanding of the differences in spectra of the calcined and as-formed samples is rather complicated.…”

“…have attracted much attention recently [1][2][3][4][5][6]. It has been shown that iron b-oxyhydroxides are quite stable up to 150-180 8C temperature [7,8] since only water release has been determined up to these temperatures, although the first endothermic minimum approximated 100 8C in the differential thermal analysis (DTA) plots [9,10].…”

Bunched akaganeite nanorod arrays: Preparation and high-performance for flexible lithium-ion batteries

“…In the discharge curve of the first cycle, there are four plateaus and sloping regions located at~1.75,~1.25,~0.8 and~0.45 V, indicating a multiple-step process of lithiation between lithium and CC/ b-FeOOH NRAs [18,20,56]. The first plateau at~1.75 V is associated with the transition from the FeOOH to Li x FeOOH (x < 1).…”

“…Besides iron oxides, akaganeite (b-FeOOH) is also regarded as a potential anode material for LIBs. b-FeOOH differs from all other iron oxides and hydroxides in that the anions are arranged in a body-centered cubic (bcc) array [16,17]. For this reason, the structure of b-FeOOH is less dense than a-and g-FeOOH, which is favorable for Li þ diffusion.…”