Three-dimensional carbon foam surrounded by carbon nanotubes and Co-Co3O4 nanoparticles for stable lithium-ion batteries

Liu, Wenbin; Fu, Yuanyuan; Li, Yanfei; Shou-hui, Chen; Song, Yonghai; Wang, Linyu

doi:10.1016/j.compositesb.2019.01.038

Cited by 54 publications

(17 citation statements)

References 41 publications

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“…Thirdly, the encapsulation and confinement effect of GA effectively prevents the aggregation and shedding of metal oxides during the cycles, which is beneficial to the sufficient interaction between redox active sites and electrolyte and improves the lithium‐storage ability. The lithium‐storage properties of Co 3 O 4 ‐based electrodes reported previously are listed in Table . Overall, the specific capacity of 624 mAh g −1 (100 mA g −1 , 100 cycles) for our prepared Co 3 O 4 @GA is higher than those of Co 3 O4‐based materials at the same current density, including Co 3 O 4 /N−C, Co 3 O 4 /carbon, carbon fiber@Co 3 O 4 , CoO@Co 3 O 4 @C, and CF@Co–Co 3 O 4 /CNT.…”

Section: Resultsmentioning

confidence: 65%

Cobalt Oxide Nanocubes Encapsulated in Graphene Aerogel as Integrated Anodes for Lithium‐Ion Batteries

et al. 2020

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The development of metal oxides as anodes of lithium‐ion batteries is severely limited because of their poor conductivity and serious volume expansion during the cycles. This work focuses on the improvement of electronic conductivity and cycle stability of metal oxides. The nanocubes of Prussian blue analogues are firstly encapsulated in the network of graphene aerogel (GA), and then the Co3O4@GA composites are synthesized after the subsequent calcination treatment. The resulting products are used as free‐standing and high‐performance anodes of LIBs, and the optimal electrode delivers a specific capacity of 624 mAh g−1 at 100 mA g−1 after 100 cycles together with a good cycle stability. The extraordinary lithium‐storage performances can be ascribed to the synergistic interaction between metal oxides and GA substrate. The incorporation of GA improves the electrode conductivity and alleviates the aggregation and volume expansion of metal oxide particles upon cycling, whereas cobalt oxides contribute a high specific capacity.

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Section: Resultsmentioning

confidence: 65%

Cobalt Oxide Nanocubes Encapsulated in Graphene Aerogel as Integrated Anodes for Lithium‐Ion Batteries

et al. 2020

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“…01‐079‐1744). There is some impurity assigned to the metallic Co in the PS‐CFO/CNTs/rGO composite (marked with *), and it is reported that the existence of Co metal is beneficial to the improvement of electrical conductivity . And the weak peak around 26.2° can be assigned to the CNTs and rGO.…”

Section: Resultsmentioning

confidence: 99%

Template‐Assisted Synthesis of Honeycomb‐Like CoFe₂O₄/CNTs/rGO Composite as Anode Material for Li/Na‐Ion Batteries

et al. 2019

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CoFe2O4 is a fascinating anode material due to its high theoretical capacity. However, the low electronic conductivity, limited electrochemical kinetics and huge volume expansion lead to poor electrochemical performance. Here, the CoFe2O4/CNTs/rGO ternary composite with a honeycomb‐like structure (PS‐CFO/CNTs/rGO) has been synthesized via a spray drying method assisted by polystyrene (PS) soft template. The rational 3D porous structure design not only enhances the transport capacity of Li/Na ions, but also provides buffer spaces for alleviating volume expansion, resulting in rapid electrochemical kinetics and improved electrode integrity during cycling. In particular, to improve the electrochemical performance, a facile pre‐treatment process combining heat‐treatment and pre‐sodiation treatment is first developed for the anode materials of sodium‐ion batteries (SIBs). As a result, at 1 A g−1 after 365 cycles, the pronounced capacity of PS‐CFO/CNTs/rGO composite can be maintained at 750 mAh g−1 for lithium‐ion batteries (LIBs), and after 5000 cycles, maintained at 195 mAh g−1 for the SIBs.

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“…A reversible capacity of 505 mAh g À 1 was reached even after 100 cycles, which result compared favorably with that for pure CF (207 mAh g À 1 ). [77] Clearly, these values further highlight the superior cycling stability of the (0-1-3) hybrid electrode in LIB applications. Zhang's group found that a network of germanium (Ge), CNTs and copper foam offered plenty of considerable advantages for both ions/electron migration and energy density (Figure 5b).…”

Section: (0-1-3)-dimensional Hybrid Nanomaterialsmentioning

confidence: 88%

Hybrid Electrode Innovations in Triple and Quadruple Dimensions for Lithium‐Ion Batteries

et al. 2019

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Hybrid electrodes for lithium‐ion batteries (LIBs) based on the dimensional combination of various nanomaterials have been widely investigated in recent years. This is an inevitable development trend that seeks to inherit and promote the remarkable achievements of the double designs for an ideal electrode in both performance and stability. However, a clear and in‐depth understanding of the origin of the common progress trends, as well as the opportunities and challenges of such designs, are somewhat elusive due to the lack of detailed reviews of the field. Herein, we present a review of the hybrid electrodes arising from triple and quadruple combinational dimensions in LIB applications. The critical challenges of normal electrode operation are discussed in a detailed way to better understand how interactions and synergistic effects in hybrid design affect the mechanical aspects, electrochemical properties, performance and cycle life of batteries. Finally, the developments and innovations in future electrodes based on these higher‐dimensional hybrid designs are presented.

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Three-dimensional carbon foam surrounded by carbon nanotubes and Co-Co3O4 nanoparticles for stable lithium-ion batteries

Cited by 54 publications

References 41 publications

Cobalt Oxide Nanocubes Encapsulated in Graphene Aerogel as Integrated Anodes for Lithium‐Ion Batteries

Cobalt Oxide Nanocubes Encapsulated in Graphene Aerogel as Integrated Anodes for Lithium‐Ion Batteries

Template‐Assisted Synthesis of Honeycomb‐Like CoFe₂O₄/CNTs/rGO Composite as Anode Material for Li/Na‐Ion Batteries

Hybrid Electrode Innovations in Triple and Quadruple Dimensions for Lithium‐Ion Batteries

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Three-dimensional carbon foam surrounded by carbon nanotubes and Co-Co3O4 nanoparticles for stable lithium-ion batteries

Cited by 54 publications

References 41 publications

Cobalt Oxide Nanocubes Encapsulated in Graphene Aerogel as Integrated Anodes for Lithium‐Ion Batteries

Cobalt Oxide Nanocubes Encapsulated in Graphene Aerogel as Integrated Anodes for Lithium‐Ion Batteries

Template‐Assisted Synthesis of Honeycomb‐Like CoFe2O4/CNTs/rGO Composite as Anode Material for Li/Na‐Ion Batteries

Hybrid Electrode Innovations in Triple and Quadruple Dimensions for Lithium‐Ion Batteries

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Template‐Assisted Synthesis of Honeycomb‐Like CoFe₂O₄/CNTs/rGO Composite as Anode Material for Li/Na‐Ion Batteries