Germanium Nanotubes Prepared by Using the Kirkendall Effect as Anodes for High‐Rate Lithium Batteries

Park, Mi-Hee; Cho, Yong Hyun; Kim, Kitae; Kim, Je Young; Liu, Meilin; Cho, Jaephil

doi:10.1002/anie.201103062

Cited by 303 publications

(213 citation statements)

References 34 publications

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“…Compared with the previous literatures [ 16,18,21,27,[66][67][68][69] (Table S1, Supporting Information), the core-shell Ge@G@TiO 2 NFs displayed excellent electrochemical performance as anode material for LIBs and SIBs due to the unique morphology and structure, which could be attributed to the following reasons ( Figure 6 a).…”

Section: Materials Characterizationmentioning

confidence: 83%

Core–Shell Ge@Graphene@TiO₂ Nanofibers as a High‐Capacity and Cycle‐Stable Anode for Lithium and Sodium Ion Battery

Wang

Fan

Gong

et al. 2015

Adv Funct Materials

270

152

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Germanium is considered as a promising anode material because of its comparable lithium and sodium storage capability, but it usually exhibits poor cycling stability due to the large volume variation during lithium or sodium uptake and release processes. In this paper, germanium@graphene nanofibers are first obtained through electrospinning followed by calcination. Then atomic layer deposition is used to fabricate germanium@graphene@TiO2 core–shell nanofibers (Ge@G@TiO2 NFs) as anode materials for lithium and sodium ion batteries (LIBs and SIBs). Graphene and TiO2 can double protect the germanium nanofibers in charge and discharge processes. The Ge@G@TiO2 NFs composite as an anode material is versatile and exhibits enhanced electrochemical performance for LIBs and SIBs. The capacity of the Ge@G@TiO2 NFs composite can be maintained at 1050 mA h g−1 (100th cycle) and 182 mA h g−1 (250th cycle) for LIBs and SIBs, respectively, at a current density of 100 mA g−1, showing high capacity and good cycling stability (much better than that of Ge nanofibers or Ge@G nanofibers).

show abstract

Section: Materials Characterizationmentioning

confidence: 83%

Core–Shell Ge@Graphene@TiO₂ Nanofibers as a High‐Capacity and Cycle‐Stable Anode for Lithium and Sodium Ion Battery

Wang

Fan

Gong

et al. 2015

Adv Funct Materials

270

152

View full text Add to dashboard Cite

show abstract

“…3,4 Up to now, various methods have been developed for the synthesis of inorganic nanotubes and tube-intubes, such as the template method, 5 galvanic replacement reaction, 6 hydrothermal method, 7 nonequilibrium heat-treatment approach, 8 and multifluidic compound-jet electrospinning techniques. 9 Using these methods, some hollow and tube-in-tube structure nanomaterials have been fabricated successfully.…”

mentioning

confidence: 99%

Controllable Synthesis of Porous α-Fe2O3 Microtube and Tube-in-tube by Non-coaxial Electrospinning

Lang

2013

Chemistry Letters

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We present a facile non-coaxial electrospinning technique to synthesize the porous α-Fe2O3 microtube and tube-in-tube. The possible formation mechanism of different tubular-structure α-Fe2O3 has been proposed. Among the experimental parameters, the heating rate during calcination is a key factor for realizing different α-Fe2O3 structures. The slower heating rate is of benefit to form α-Fe2O3 fiber with tube-in-tube structure. This method is versatile and can be extended to construct other hollow and multitubular metal oxide nanofibers, such as ZrO2, SiO2, SnO2, and In2O3 tube-in-tubes.

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“…Much research has been conducted on using alternative materials such as graphene, 4-7 metals, [8][9][10][11][12][13][14] and metal oxides.…”

mentioning

confidence: 99%

Facile synthesis of graphene–molybdenum dioxide and its lithium storage properties

Seng

et al. 2012

J. Mater. Chem.

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Graphene-molybdenum dioxide composites in several ratios have been prepared through a facile synthesis method. Depending on the ratio, the as synthesized composites have either 2-dimensional graphene sheets with MoO 2 particles anchored to them or a clustered agglomerate morphology. The composites have been characterised using Raman spectroscopy, X-ray diffraction, and electron diffraction to confirm the monoclinic MoO 2 phase that is present. Lithium storage properties of the assynthesised samples were tested in a coin-type half cell assembly to determine the relationship between the ratio and the electrochemical performance. The sample with highest amount of MoO 2 (78 wt%) displayed the most promising lithium storage properties, with stable cycling performance at 0.2 A g À1 that shows negligible capacity loss over 50 cycles, retaining a capacity of 640 mA h g À1. The rate capabilities were also tested, and show a capacity of 380 mA h g À1 at 2.0 A g À1, which is comparable to the theoretical capacity of graphite and previously reported work on similar materials.

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Germanium Nanotubes Prepared by Using the Kirkendall Effect as Anodes for High‐Rate Lithium Batteries

Cited by 303 publications

References 34 publications

Core–Shell Ge@Graphene@TiO₂ Nanofibers as a High‐Capacity and Cycle‐Stable Anode for Lithium and Sodium Ion Battery

Core–Shell Ge@Graphene@TiO₂ Nanofibers as a High‐Capacity and Cycle‐Stable Anode for Lithium and Sodium Ion Battery

Controllable Synthesis of Porous α-Fe2O3 Microtube and Tube-in-tube by Non-coaxial Electrospinning

Facile synthesis of graphene–molybdenum dioxide and its lithium storage properties

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Germanium Nanotubes Prepared by Using the Kirkendall Effect as Anodes for High‐Rate Lithium Batteries

Cited by 303 publications

References 34 publications

Core–Shell Ge@Graphene@TiO2 Nanofibers as a High‐Capacity and Cycle‐Stable Anode for Lithium and Sodium Ion Battery

Core–Shell Ge@Graphene@TiO2 Nanofibers as a High‐Capacity and Cycle‐Stable Anode for Lithium and Sodium Ion Battery

Controllable Synthesis of Porous α-Fe2O3 Microtube and Tube-in-tube by Non-coaxial Electrospinning

Facile synthesis of graphene–molybdenum dioxide and its lithium storage properties

Contact Info

Product

Resources

About

Core–Shell Ge@Graphene@TiO₂ Nanofibers as a High‐Capacity and Cycle‐Stable Anode for Lithium and Sodium Ion Battery

Core–Shell Ge@Graphene@TiO₂ Nanofibers as a High‐Capacity and Cycle‐Stable Anode for Lithium and Sodium Ion Battery