Metal etching method for preparing porous graphene as high performance anode material for lithium-ion batteries

Cao, Hongliang; Zhou, Xufeng; Zheng, Chao; Liu, Zhaoping

doi:10.1016/j.carbon.2015.03.003

Cited by 77 publications

(30 citation statements)

References 29 publications

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“…Compared with the adsorption and desorption behavior at low relative pressure (P/P 0 ) (0–0.05), the adsorption volume increases sharply in the high pressure zone (0.8–1.0), showing that there is a large number of macropores in the 3DGA, which also conforms to the results of the magnified SEM images (Figure b). Compared with some carbon nanomaterials recently reported, 3DGA exhibits a larger specific surface area of 433.0 m 2 g −1 , which is mainly derived from the contribution of mesopores and micropores, illustrating its very rich pore structure . The macropores in 3DGA cannot be reflected in the specific surface area value, but their existence may facilitate the impregnation of the electrolyte in 3DGA, thus enhancing the electrochemical performance of 3DGA.…”

Section: Resultsmentioning

confidence: 87%

“…Compared with some carbon nanomaterials recently reported, 3DGA exhibits a larger specific surface area of 433.0 m 2 g À 1 , which is mainly derived from the contribution of mesopores and micropores, illustrating its very rich pore structure. [46][47][48][49] The macropores in 3DGA cannot be reflected in the specific surface area value, but their existence may facilitate the impregnation of the electrolyte in 3DGA, thus enhancing the electrochemical performance of 3DGA. In contrast, the comparative GP (Figure 6b) has a much smaller specific surface area of 60.6 m 2 g À 1 .…”

Section: Resultsmentioning

confidence: 99%

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Self‐Assembled Three‐Dimensional Graphene Aerogel with an Interconnected Porous Structure for Lithium‐Ion Batteries

Huang

Guo

et al. 2019

ChemElectroChem

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We report a low‐cost method for the fabrication of three‐dimensional graphene aerogel (3DGA) with an interconnected porous structure by using a simple hydrothermal reaction of graphite oxide (GO) in the presence of treated filter paper and subsequent annealing. In the hydrothermal process, the filter paper prevents GO sheets from intimate layer‐by‐layer stacking and serves as linkers to construct a three‐dimensional structural graphene hydrogel (GH). The pure 3DGA with an interconnected porous structure is achieved through the calcination of the GH with a three‐dimensional network structure. The as‐fabricated 3DGA electrode exhibits an improved lithium storage performance with a capacity of 712.8 mAh g−1 after 200 cycles at a rate of 200 mA g−1. More importantly, the electrode still shows a reversible capacity of 237.1 mAh g−1 even at a high rate of 1600 mA g−1, demonstrating its remarkable rate capability. The excellent electrochemical performance of the 3DGA electrode is ascribed to its distinct interconnected porous nanoarchitecture with exposed defects and edges as well as large specific surface area. The present design concept of 3DGA may provide a novel strategy for the preparation of advanced carbon materials for electrochemical energy storage systems.

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Section: Resultsmentioning

confidence: 87%

Section: Resultsmentioning

confidence: 99%

Self‐Assembled Three‐Dimensional Graphene Aerogel with an Interconnected Porous Structure for Lithium‐Ion Batteries

Huang

Guo

et al. 2019

ChemElectroChem

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“…To date, the fabrications of PG have involved high‐energy physical techniques, bottom‐up synthetic approaches via aryl–aryl coupling reactions, chemical etching by strong alkalis, high‐temperature carbothermic reduction, metal etching by heating, and self‐integrated optical antennae . However, these techniques are time‐consuming and require high energy or expensive equipment; furthermore, it is difficult to achieve precise regulation of pore sizes.…”

Section: Introductionmentioning

confidence: 99%

Combustion Fabrication of Nanoporous Graphene for Ionic Separation Membranes

Zhang

Tan

et al. 2018

Adv Funct Materials

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Porous graphene membranes hold great promise for high-selectivity separation. Moreover, their practical application is limited by the lack of a simple and efficient method for the synthesis of porous graphene. Here, a rapid and scalable method is developed for the synthesis of porous graphene via partial combustion of graphene oxide imperfectly covered by hydrotalcite. This method is not only less energy-and time-intensive than existing ones, but also allows precise control of pore size. Remarkably, the resulting membrane of porous graphene exhibits high selectivity for K + and Na + (α = 3.84) separation. Hence, this facile route for preparing membranes of porous graphene oxide might direct application membranes in environmental, energy, desalination, and biomedical fields.

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“…Recently, carbon materials with various structures have been developed, such as 0D carbon spheres, [17] 1D carbon nanofibers, [18] and 2D graphene. [19] Among these structures, 1D carbon is considered to be interesting because they can easily form the network-like structure with as hortened transport pathway for electron and lithiumi ons during the charge-discharge process. In addition, the introduction of defects, heteroatoms,a nd/or functional groups into the hierarchically porous1 Ds tructure can further increaset he available active sites for lithium storage.…”

Section: Introductionmentioning

confidence: 99%

Hierarchically‐Porous Carbon Derived from a Large‐Scale Iron‐based Organometallic Complex for Versatile Energy Storage

Fan

Wang

et al. 2016

ChemSusChem

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Inspired by the preparation of the hierarchically-porous carbon (HPC) derived from metal organic frameworks (MOFs) for energy storage, in this work, a simple iron-based metal- organic complex (MOC), which was simpler and cheaper compared with the MOF, was selected to achieve versatile energy storage. The intertwined 1 D nanospindles and enriched-oxygen doping of the HPC was obtained after one-step carbonization of the MOC. When employed in lithium-ion batteries, the HPC exhibited reversible capacity of 778 mA h g(-1) after 60 cycles at 50 mA g(-1) . Moreover, the HPC maintained a capacity of 188 mA h g(-1) after 400 cycles at 100 mA g(-1) as the anode material in a sodium-ion battery. In addition, the HPC served as the cathode matrix for evaluation of a lithium-sulfur battery. The general preparation process of the HPC is commercial, which is responsible for the large-scale production for its practical application.

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Metal etching method for preparing porous graphene as high performance anode material for lithium-ion batteries

Cited by 77 publications

References 29 publications

Self‐Assembled Three‐Dimensional Graphene Aerogel with an Interconnected Porous Structure for Lithium‐Ion Batteries

Self‐Assembled Three‐Dimensional Graphene Aerogel with an Interconnected Porous Structure for Lithium‐Ion Batteries

Combustion Fabrication of Nanoporous Graphene for Ionic Separation Membranes

Hierarchically‐Porous Carbon Derived from a Large‐Scale Iron‐based Organometallic Complex for Versatile Energy Storage

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