α-Fe2O3 nanotubes with superior lithium storage capability

Abstract

Polycrystalline α-Fe(2)O(3) nanotubes with thin walls have been synthesized by one-step template-engaged precipitation of Fe(OH)(x) followed by thermal annealing. In virtue of the unique structural features, these α-Fe(2)O(3) nanotubes exhibit superior lithium storage capabilities with exceptional high-rate capacity retention as a potential anode material for lithium-ion batteries.

Porous Flower-like α-Fe2O3 Nanostructure: A High Performance Anode Material for Lithium-ion Batteries

“…Among the transition metal oxides, hematite (α-Fe 2 O 3 ) has attracted great interest due to its favorable properties, such as low cost, good stability, nontoxicity, and environmental friendly properties. It has been studied for applications in Li-ion batteries [7][8][9][10], supercapacitors [11][12][13], magnetic materials [14,15], catalytic agents [16], gas sensors and so on [17,18].…”

Fullerol modification ferrihydrite for the degradation of acid red 18 under simulated sunlight irradiation

“…The first one might originate from the excited state PHF, which can efficiently sensitize the ground state triplet oxygen to generate 1 O 2 [4][5][6][7]. Another one might be attributed to the synergetic effect between PHF and Fh, and the excited state PHF could reduce and transfer electrons to the Fe 3+ on Fh due to E 0 (C 60 + / 1 C 60 *) = 0.1 V vs. NHE < E 0 (Fe 3+ /Fe 2+ ) = 0.77 V vs. NHE [9,31]. Subsequently, the reduction of Fe 3+ into Fe 2+ can be accelerated, which then can further promote the decomposition of H 2 O 2 into highly oxidative • OH radical.…”

“…This phenomenon further implied that the presence of PHF could enhance the photo-Fenton catalytic activity of Fh. The excited state PHF could not only generate 1 O 2 [4][5][6][7], but also could transfer electrons to the Fe 3+ on Fh [9,31], which can then further promote the decomposition of H 2 O 2 into highly oxidative • OH. Hence, the high removal efficiency of AR18 by PHF/Fh might be attributed to the reaction of AR18 with small amounts of 1 O 2 photosensitized by PHF, or to the increased amounts of • OH produced by the synergetic effect of PHF and Fh.…”

“…Moreover, they may form surface composites through the formation of covalent bonds between the surface hydroxyl group on Fh and PHF. Theoretically, the excited state PHF could inject electrons to Fe 3+ under sunlight irradiation due to E 0 (C 60 + / 1 C 60 *) = 0.1 V vs. NHE < E 0 (Fe 3+ /Fe 2+ ) = 0.77 V vs. NHE [9,31]. Thus, the combination of Fh and PHF might be an ideal approach to achieve enhanced electron transition mediation for the purpose of enhancing the photo-Fenton catalytic activity by accelerating electron transfer from PHF to Fh (i.e., improving the reduction rate of Fe 3+ to Fe 2+ ).…”

Microwave and UV Assisted Methods for Obtaining Novel Composites Based on Fe2O3 with Embedded Gold Nanoparticles

“…Hematite (a-Fe 2 O 3 ) is a low expensive, stable and environment friendly compound which us widely used in catalysis [10], pigments industry [11], lithium ions batteries [12] and gas sensors [13]. Iron oxide may be prepared in the course of vacuum pyrolysis or sol-gel [14] and hydrothermal methods [15].…”