Design and synthesis of Cr2O3@C@G composites with yolk-shell structure for Li+ storage

Xiang, Yang; Chen, Zhi; Chen, Changmiao; Wang, Taihong; Zhang, Ming

doi:10.1016/j.jallcom.2017.07.052

Cited by 20 publications

(8 citation statements)

References 39 publications

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“…As a final illustration of the microstructural variety, Figure 12 displays a more unexpected, multi-shelled morphology which has been reported and studied by several groups [101,107,139]. Yolk-shell granules [103,122,136] are a less extreme case of a similar phenomenon.…”

Section: Microstructurementioning

confidence: 59%

Spray-Drying of Electrode Materials for Lithium- and Sodium-Ion Batteries

et al. 2018

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The performance of electrode materials in lithium-ion (Li-ion), sodium-ion (Na-ion) and related batteries depends not only on their chemical composition but also on their microstructure. The choice of a synthesis method is therefore of paramount importance. Amongst the wide variety of synthesis or shaping routes reported for an ever-increasing panel of compositions, spray-drying stands out as a versatile tool offering demonstrated potential for up-scaling to industrial quantities. In this review, we provide an overview of the rapidly increasing literature including both spray-drying of solutions and spray-drying of suspensions. We focus, in particular, on the chemical aspects of the formulation of the solution/suspension to be spray-dried. We also consider the post-processing of the spray-dried precursors and the resulting morphologies of granules. The review references more than 300 publications in tables where entries are listed based on final compound composition, starting materials, sources of carbon etc.

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Section: Microstructurementioning

confidence: 59%

Spray-Drying of Electrode Materials for Lithium- and Sodium-Ion Batteries

et al. 2018

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“…Previous research has reported that the presence of heterocyclic sulfur atoms in carbonaceous materials can increase the number of active sites in the material and facilitate the Na + /Li + insertion/extraction. In addition, they can improve the electrical conductivity and the specific capacity of LIBs/SIBs . S‐doped carbon‐based materials, in fact, contribute in enhancing the capacity of the batteries by exploiting the pseudocapacitance chemisorption mechanism of Na + 17a,19.…”

Section: Introductionmentioning

confidence: 99%

“…density. Researchers have widely investigated the use of new anode materials in LIBs, such as carbon-based materials (carbon nanofibers (CNFs), carbon nanotubes, carbon nanospheres, graphene, and their heteroatom modifications), transition metal oxides (SnO 2 , [3] Cr 2 O 3 , [4] V 2 O 5 , [5] ZnO, [6] and TiO 2 [7] ), and transition metal sulfides (FeS 2 , [8] NiS, [9] CoS, [10] MoS 2 , [11] and SnS 2 [12] ). However, with the economic development and the gradual depletion of lithium resources, lithium has become an expensive element.…”

Section: Introductionmentioning

confidence: 99%

“…In addition, they can improve the electrical conductivity and the specific capacity of LIBs/ SIBs. [4,18] S-doped carbon-based materials, in fact, contribute in enhancing the capacity of the batteries by exploiting the pseudocapacitance chemisorption mechanism of Na + . [17a,19] Bao et al reported that the heteroatom doping of carbon materials improves their electrochemical properties because the heteroatom can react with Na + and this results in the generation of a pseudocapacitance effect.…”

Section: Introductionmentioning

confidence: 99%

“…Although LIB technologies made remarkable progress in the past few years, the capacity of these batteries is limited by the use of graphite as the anode material, leading to a low capacity and energy density. Researchers have widely investigated the use of new anode materials in LIBs, such as carbon‐based materials (carbon nanofibers (CNFs), carbon nanotubes, carbon nanospheres, graphene, and their heteroatom modifications), transition metal oxides (SnO 2 , Cr 2 O 3 , V 2 O 5 , ZnO, and TiO 2 ), and transition metal sulfides (FeS 2 , NiS, CoS, MoS 2 , and SnS 2 ). However, with the economic development and the gradual depletion of lithium resources, lithium has become an expensive element 2a,4.…”

Section: Introductionmentioning

confidence: 99%

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S‐Doped Carbon Fibers Uniformly Embedded with Ultrasmall TiO₂ for Na⁺/Li⁺ Storage with High Capacity and Long‐Time Stability

Chen

Wang

et al. 2019

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Building a rechargeable battery with high capacity, high energy density, and long lifetime contributes to the development of novel energy storage devices in the future. Although carbon materials are very attractive anode materials for lithium‐ion batteries (LIBs), they present several deficiencies when used in sodium‐ion batteries (SIBs). The choice of an appropriate structural design and heteroatom doping are critical steps to improve the capacity and stability. Here, carbon‐based nanofibers are produced by sulfur doping and via the introduction of ultrasmall TiO2 nanoparticles into the carbon fibers (CNF‐S@TiO2). It is discovered that the introduction of TiO2 into carbon nanofibers can significantly improve the specific surface area and microporous volume for carbon materials. The TiO2 content is controlled to obtain CNF‐S@TiO2‐5 to use as the anode material for SIBs/LIBs with enhanced electrochemical performance in Na+/Li+ storage. During the charge/discharge process, the S‐doping and the incorporation of TiO2 nanoparticles into carbon fibers promote the insertion/extraction of the ions and enhance the capacity and cycle life. The capacity of CNF‐S@TiO2‐5 can be maintained at ≈300 mAh g−1 over 600 cycles at 2 A g−1 in SIBs. Moreover, the capacity retention of such devices is 94%, showing high capacity and good stability.

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Cr2O3 nanoparticles: a fascinating electrode material combining both surface-controlled and diffusion-limited redox reactions for aqueous supercapacitors

Liu

Zhu

et al. 2018

J Mater Sci

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Design and synthesis of Cr2O3@C@G composites with yolk-shell structure for Li+ storage

Cited by 20 publications

References 39 publications

Spray-Drying of Electrode Materials for Lithium- and Sodium-Ion Batteries

Spray-Drying of Electrode Materials for Lithium- and Sodium-Ion Batteries

S‐Doped Carbon Fibers Uniformly Embedded with Ultrasmall TiO₂ for Na⁺/Li⁺ Storage with High Capacity and Long‐Time Stability

Cr2O3 nanoparticles: a fascinating electrode material combining both surface-controlled and diffusion-limited redox reactions for aqueous supercapacitors

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Design and synthesis of Cr2O3@C@G composites with yolk-shell structure for Li+ storage

Cited by 20 publications

References 39 publications

Spray-Drying of Electrode Materials for Lithium- and Sodium-Ion Batteries

Spray-Drying of Electrode Materials for Lithium- and Sodium-Ion Batteries

S‐Doped Carbon Fibers Uniformly Embedded with Ultrasmall TiO2 for Na+/Li+ Storage with High Capacity and Long‐Time Stability

Cr2O3 nanoparticles: a fascinating electrode material combining both surface-controlled and diffusion-limited redox reactions for aqueous supercapacitors

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Product

Resources

About

S‐Doped Carbon Fibers Uniformly Embedded with Ultrasmall TiO₂ for Na⁺/Li⁺ Storage with High Capacity and Long‐Time Stability