Controlled synthesis of α-Fe2O3 nanostructures and their size-dependent electrochemical properties for lithium-ion batteries

Nuli, Yanna; Zeng, Rong; Zhang, Peng; Guo, Zaiping; Liu, Huan

doi:10.1016/j.jpowsour.2008.03.004

Cited by 119 publications

(64 citation statements)

References 33 publications

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“…In addition, the present work establishes co-precipitation technique with spraying of drops (through piezoelectric process) whose arrangement is successful wet chemical method to synthesize fine and uniform particle size with non-agglomerate particles, easily scale-up, low cost and time saving technique. Moreover, shape of the nanocrystallites (PB family and iron oxide) are spherical with uniform homogeneity as compared to earlier reports [12,26,27]. Here it is worth pointing out that PB suspension can be mixed with the other metal oxide, e.g.…”

Section: Discussionsupporting

confidence: 55%

Synthesis of Fe₄[Fe(CN)₆]₃·14H₂O Nanopowder by Co-Precipitation Technique and Effect of Heat Treatment

et al. 2010

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Nanopowder of iron cyanide hydrate (member of Prussian blue family) was obtained using ferric chloride and potassium cyanide in their dilute solution through co-precipitation method. The effect of thermal annealing on iron cyanide hydrate nanocrystallites have been studied in detail. The formation of Fe4[Fe(CN)6]3·14H2O and iron oxides was revealed by the Fourier transform infrared spectroscopy. The crystal structure, morphology and size of nanocrystallites were investigated by X-ray diffraction and transmission electron microscope. Results suggest that using co-precipitation technique, nanopowder of iron cyanide hydrate, in typically spherical shape, can be obtained and their thermal treatment also yield iron oxide nanocrystallites of spherical with good homogeneity. The size of the prepared nanocrystallites was found in the range 20-36 nm. It was observed that thermal treatment, typically at 800• C (4 h), iron cyanide hydrate (Fe4[Fe(CN)6]3·14H2O) nanocrystallites transformed into iron oxide (α-Fe2O3, hematite) nanocrystallites.

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Section: Discussionsupporting

confidence: 55%

Synthesis of Fe₄[Fe(CN)₆]₃·14H₂O Nanopowder by Co-Precipitation Technique and Effect of Heat Treatment

et al. 2010

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“…), represent a popular class of transition metal oxides and find use in numerous applications such as diagnostic imaging and other biomedical applications [163]. Large particles (~0.5 µm) of the most stable iron oxide, α-Fe2O3 (hematite), have previously demonstrated a large size-dependent effect on reaction with Li + [164], where a structural transformation occurs from the cubic to hexagonal system after insertion of an equivalent of just 0.05 mol. Li + [165].…”

Section: Iron Oxidesmentioning

confidence: 99%

Evaluating the performance of nanostructured materials as lithium-ion battery electrodes

et al. 2013

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Access to the full text of the published version may require a subscription. Rights © Tsinghua University Press and Springer-Verlag Berlin ABSTRACTThe performance of the lithium-ion cell is heavily dependent on the ability of the host electrodes to accommodate and release Li + ions from the local structure. While the choice of electrode materials may define parameters such as cell potential and capacity, the process of intercalation may be physically limited by the rate of solid-state Li + diffusion. Increased diffusion rates in lithium-ion electrodes may be achieved through a reduction in the diffusion path, accomplished by a scaling of the respective electrode dimensions.In addition, some electrodes may undergo large volume changes associated with charging and discharging, the strain of which, may be better accommodated through nanostructuring. Failure of the host to accommodate such volume changes may lead to pulverisation of the local structure and a rapid loss of capacity. In this review article, we seek to highlight a number of significant gains in the development of nanostructured lithium-ion battery architectures (both anode and cathode), as drivers of potential next-generation electrochemical energy storage devices.

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“…The loss of electronic conduction pathways can also impede the lithiation/ delithiation reaction by enlarging both the contact and chargetransfer resistances. To solve or at least mitigate these problems, nanostructured Fe 2 O 3 materials, such as nanoparticles, 9 nanorods, 10 nanotubes, 11 nanoflakes, 12 and nanoarchitectured electrodes, 13,14 have been prepared, with which a partial improvement has been achieved with respect to cyclability and rate capability. This work deals with the Fe 2 O 3 electrode with two major goals in mind.…”

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confidence: 99%

The Role of Metallic Fe and Carbon Matrix in Fe[sub 2]O[sub 3]/Fe/Carbon Nanocomposite for Lithium-Ion Batteries

Kim

Chung

et al. 2010

J. Electrochem. Soc.

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A comparative study is made on the cycle and rate performance of three Fe 2 O 3 -containing electrodes. The first electrode is made from a commercial nanosized ͑Ͻ100 nm͒ Fe 2 O 3 powder, whereas the second is made from a carbon-supported nanosized Fe 2 O 3 ͑Fe 2 O 3 /carbon composite͒. The third electrode is prepared by modifying the second, incorporating the metallic Fe into the Fe 2 O 3 particles ͑Fe 2 O 3 /Fe/carbon composite͒. Three electrodes show the following performance order in the cycle retention and rate capability: nanosized Fe 2 O 3 Ͻ Fe 2 O 3 /carbon composite Ͻ Fe 2 O 3 /Fe/carbon composite. The reverse order is, however, found on both the electrode volume change and the evolution of internal resistance. Thus, the best performance observed with the Fe 2 O 3 /Fe/carbon composite electrode has been ascribed to the presence of a carbon support and metallic Fe, both of which seem to play two important roles: the buffering action against the massive volume change in Fe 2 O 3 particles and providing an electronically conductive network within the swollen electrode layer. © 2010 The Electrochemical Society. ͓DOI: 10.1149/1.3298891͔ All rights reserved. One of the recent issues in lithium-ion batteries ͑LIBs͒ concerns a high energy density, particularly for the rapidly increasing market of sophisticated electronic devices. Transition-metal oxides ͑M x O y , where M is Co, Ni, Fe, etc.͒ have emerged as a potential negative electrode material for high energy density LIBs because they deliver a specific capacity 2-3 times larger than that of the currently used graphite ͑372 mAh g −1 ͒. 1-6 Such a high capacity results from a reduction of metal ions to their elemental state according to the general reaction MO + 2Li + + 2e = Li 2 O + M 0 . As a result of the reduction reaction, nanosized metal particles that are dispersed in the Li 2 O matrix are formed ͑this is called conversion reaction͒, but are restored back to the original oxides by delithiation. The number of electrons involved in this charge-discharge process ͑that is, capacity͒ is thus determined by the oxidation state of metallic components; for instance, six electrons for Fe 2 O 3 . Among the transitionmetal oxides, iron oxide ͑Fe 2 O 3

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Controlled synthesis of α-Fe2O3 nanostructures and their size-dependent electrochemical properties for lithium-ion batteries

Cited by 119 publications

References 33 publications

Synthesis of Fe₄[Fe(CN)₆]₃·14H₂O Nanopowder by Co-Precipitation Technique and Effect of Heat Treatment

Synthesis of Fe₄[Fe(CN)₆]₃·14H₂O Nanopowder by Co-Precipitation Technique and Effect of Heat Treatment

Evaluating the performance of nanostructured materials as lithium-ion battery electrodes

The Role of Metallic Fe and Carbon Matrix in Fe[sub 2]O[sub 3]/Fe/Carbon Nanocomposite for Lithium-Ion Batteries

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Controlled synthesis of α-Fe2O3 nanostructures and their size-dependent electrochemical properties for lithium-ion batteries

Cited by 119 publications

References 33 publications

Synthesis of Fe4[Fe(CN)6]3·14H2O Nanopowder by Co-Precipitation Technique and Effect of Heat Treatment

Synthesis of Fe4[Fe(CN)6]3·14H2O Nanopowder by Co-Precipitation Technique and Effect of Heat Treatment

Evaluating the performance of nanostructured materials as lithium-ion battery electrodes

The Role of Metallic Fe and Carbon Matrix in Fe[sub 2]O[sub 3]/Fe/Carbon Nanocomposite for Lithium-Ion Batteries

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Synthesis of Fe₄[Fe(CN)₆]₃·14H₂O Nanopowder by Co-Precipitation Technique and Effect of Heat Treatment

Synthesis of Fe₄[Fe(CN)₆]₃·14H₂O Nanopowder by Co-Precipitation Technique and Effect of Heat Treatment