Template‐Free Synthesis of Interconnected Hollow Carbon Nanospheres for High‐Performance Anode Material in Lithium‐Ion Batteries

Han, Fudong; Bai, Yu‐Jun; Li, Rui; Yao, Bin; Qi, Yong‐Xin; Lun, Ning; Zhang, Jianxin

doi:10.1002/aenm.201100340

Cited by 295 publications

(217 citation statements)

References 28 publications

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“…28,29 What is more, the two characteristic Raman peaks at 1348 cm À1 and 1576 cm À1 are observed, which are the D-band for the disordered mode and the G-band for the stretching mode of C-C bonds of graphite. 30,31 Generally, the intensity ratio of D band to G band (I D /I G ) is used to estimate the degree of disorder in graphite. 32 The I D /I G ratio for the Si/SiO x /C-3 sample is 0.855, suggesting that the graphite in the sample has high graphitization degree, which is favor for improving the electrochemical performance of Si/SiO x /C composites.…”

Section: Resultsmentioning

confidence: 99%

Two-step ball-milling synthesis of a Si/SiO_x/C composite electrode for lithium ion batteries with excellent long-term cycling stability

et al. 2017

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a SiO x -based anodes have attracted tremendous attention owing to their low cost, higher theoretical capacity than graphite and lower volume expansion than pure silicon. In this work, a simple and cost-effective two-step ball-milling method was proposed to fabricate Si/SiO x /C composites by using commercial SiO and graphite carbon as raw materials. The two-step ball-milling synthesis of the Si/SiO x /C composites can avoid the generation of an inert SiC phase and realize the uniform dispersion of Si/SiO x in graphite carbon, which offers good electrical conductivity and relieves the volume expansion of the Si/SiO x phase. Owing to the synergistic effect of the Si/SiO x phase and the graphite carbon, the typical Si/SiO x /C electrode exhibits a stable and high capacity of 726 mA h g À1 after 500 cycles at a current density of 0.1 A g À1 with a capacity retention of 82%. The two-step ball-milling preparation of the Si/SiO x /C composite provides a facile approach to fabricate high-performance SiO x -based anode materials.

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Section: Resultsmentioning

confidence: 99%

Two-step ball-milling synthesis of a Si/SiO_x/C composite electrode for lithium ion batteries with excellent long-term cycling stability

et al. 2017

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“…In addition, partially graphitized porous carbon is a class of emerging materials with promising chemical properties for LIBs due to their relatively low cost, high conductivity and porous structure, which make them very attractive materials. For example, Zhang and co-workers 17 reported the template-free synthesis of hollow carbon nanospheres for high-performance anode materials for LIBs (630 mA h g À 1 after 50 cycles). In addition, the chemical and electronic properties of the carbon hosts can be further modified by doping with heteroatoms, such as phosphorus 18 , boron 19 , sulfur 20 and nitrogen 21 .…”

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High lithium anodic performance of highly nitrogen-doped porous carbon prepared from a metal-organic framework

2014

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Theoretical and experimental results have revealed that the lithium-ion storage capacity for nitrogen-doped graphene largely depends on the nitrogen-doping level. However, most nitrogen-doped carbon materials used for lithium-ion batteries are reported to have a nitrogen content of approximately 10 wt% because a higher number of nitrogen atoms in the two-dimensional honeycomb lattice can result in structural instability. Here we report nitrogen-doped graphene particle analogues with a nitrogen content of up to 17.72 wt% that are prepared by the pyrolysis of a nitrogen-containing zeolitic imidazolate framework at 800°C under a nitrogen atmosphere. As an anode material for lithium-ion batteries, these particles retain a capacity of 2,132 mA h g À 1 after 50 cycles at a current density of 100 mA g À 1 , and 785 mAh g À 1 after 1,000 cycles at 5 A g À 1 . The remarkable performance results from the graphene analogous particles doped with nitrogen within the hexagonal lattice and edges.

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“…This kinetic imbalance limits the overall performance, so proper selection of a rapid-response faradaic electrode is particularly important. [11][12][13][14] Various nanostructured carbon materials (NSCMs) have been demonstrated as high-power faradaic electrodes, [15][16][17][18][19][20][21] with potential for applications as counter electrodes in asymmetric supercapacitors. These can be expected to exhibit a high power density due to the short transport path for ions and electrons, delivering relatively high capacity via intercalation of ions into the carbon structure.…”

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confidence: 99%

Ultra‐Thin Hollow Carbon Nanospheres for Pseudocapacitive Sodium‐Ion Storage

et al. 2014

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Ultra‐thin hollow carbon nanospheres (UTH‐CNs) are fabricated for use as anodes of asymmetric sodium ion pseudocapacitors. The ∼3 nm thick amorphous carbon walls obtained from regenerated silk proteins as a template exhibit a well‐defined porous structure suitable for reversible sodium‐ion storage. The UTH‐CNs show remarkable electrochemical activity with sodium via a pseudocapacitive reaction, delivering a large reversible capacity as well as superior rate performance for more than 1000 cycles. The pseudocapacitors based on UTH‐CNs exhibit a capacitance of 186 F g−1, a specific energy of 43 Wh kg−1 and a power density of 10 kW kg−1. This represents the highest value yet reported for asymmetric sodium‐ion storage pseudocapacitors.

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Template‐Free Synthesis of Interconnected Hollow Carbon Nanospheres for High‐Performance Anode Material in Lithium‐Ion Batteries

Cited by 295 publications

References 28 publications

Two-step ball-milling synthesis of a Si/SiO_x/C composite electrode for lithium ion batteries with excellent long-term cycling stability

Two-step ball-milling synthesis of a Si/SiO_x/C composite electrode for lithium ion batteries with excellent long-term cycling stability

High lithium anodic performance of highly nitrogen-doped porous carbon prepared from a metal-organic framework

Ultra‐Thin Hollow Carbon Nanospheres for Pseudocapacitive Sodium‐Ion Storage

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Template‐Free Synthesis of Interconnected Hollow Carbon Nanospheres for High‐Performance Anode Material in Lithium‐Ion Batteries

Cited by 295 publications

References 28 publications

Two-step ball-milling synthesis of a Si/SiOx/C composite electrode for lithium ion batteries with excellent long-term cycling stability

Two-step ball-milling synthesis of a Si/SiOx/C composite electrode for lithium ion batteries with excellent long-term cycling stability

High lithium anodic performance of highly nitrogen-doped porous carbon prepared from a metal-organic framework

Ultra‐Thin Hollow Carbon Nanospheres for Pseudocapacitive Sodium‐Ion Storage

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Two-step ball-milling synthesis of a Si/SiO_x/C composite electrode for lithium ion batteries with excellent long-term cycling stability

Two-step ball-milling synthesis of a Si/SiO_x/C composite electrode for lithium ion batteries with excellent long-term cycling stability