Mass production of two-dimensional oxides by rapid heating of hydrous chlorides

Zhao, Chunsong; Zhang, Haitian; Si, Wenjie; Wu, Hui

doi:10.1038/ncomms12543

Cited by 94 publications

(67 citation statements)

References 45 publications

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“…Moreover, this method is easy to scale up for relatively large-scale production. [85] Copyright 2016, Nature Publishing Group. It has been reported that graphene can be produced on a scale of hundreds of kilograms by using a liquid-exfoliation method, opening a door to the commercialization of this material.…”

Section: "Top-down" Synthesis Of 2d Metal Oxide Nanosheetsmentioning

confidence: 99%

“…The second example is a thermal-exfoliation method designed for the mass production of 2D metal oxides that was developed by Zhao et al [85] In this case, a series of 2D oxide nanosheets, including Cr 2 O 3 , ZrO 2 , Al 2 O 3 , and Y 2 O 3 was obtained by heating the corresponding hydrous-chloride salts. During the rapid heating of the hydrous chloride or oxychloride precursors, water in their crystal lattice was removed and the precursors were hydrolyzed with the release of H 2 O and HCl gases, which caused large pressures to drive the effective exfoliation of the layered solid MCl x (M = metal) and the spontaneous formation of M 2 O x nanosheets.…”

Section: "Top-down" Synthesis Of 2d Metal Oxide Nanosheetsmentioning

confidence: 99%

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Two‐Dimensional Metal Oxide Nanomaterials for Next‐Generation Rechargeable Batteries

et al. 2017

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The exponential increase in research focused on two-dimensional (2D) metal oxides has offered an unprecedented opportunity for their use in energy conversion and storage devices, especially for promising next-generation rechargeable batteries, such as lithium-ion batteries (LIBs) and sodium-ion batteries (NIBs), as well as some post-lithium batteries, including lithium-sulfur batteries, lithium-air batteries, etc. The introduction of well-designed 2D metal oxide nanomaterials into next-generation rechargeable batteries has significantly enhanced the performance of these energy-storage devices by providing higher chemically active interfaces, shortened ion-diffusion lengths, and improved in-plane carrier-/charge-transport kinetics, which have greatly promoted the development of nanotechnology and the practical application of rechargeable batteries. Here, the recent progress in the application of 2D metal oxide nanomaterials in a series of rechargeable LIBs, NIBs, and other post lithium-ion batteries is reviewed relatively comprehensively. Current opportunities and future challenges for the application of 2D nanomaterials in energy-storage devices to achieve high energy density, high power density, stable cyclability, etc. are summarized and outlined. It is believed that the integration of 2D metal oxide nanomaterials in these clean energy devices offers great opportunities to address challenges driven by increasing global energy demands.

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Section: "Top-down" Synthesis Of 2d Metal Oxide Nanosheetsmentioning

confidence: 99%

Section: "Top-down" Synthesis Of 2d Metal Oxide Nanosheetsmentioning

confidence: 99%

Two‐Dimensional Metal Oxide Nanomaterials for Next‐Generation Rechargeable Batteries

et al. 2017

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“…At the same time, hydrous‐chloride compounds would be converted to their corresponding hypochlorites through reaction. Thereafter, hypochlorite 2D crystals can be transformed into corresponding oxide 2D crystals by heating treatment . The heating exfoliation methods mentioned above are solid phase peeling or liquid phase exfoliation.…”

Section: Preparation Of 2d Crystal–based Fibersmentioning

confidence: 99%

2D Crystal–Based Fibers: Status and Challenges

Meng

Kong

et al. 2019

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2D crystals are emerging new materials in multidisciplinary fields including condensed state physics, electronics, energy, environmental engineering, and biomedicine. To employ 2D crystals for practical applications, these nanoscale crystals need to be processed into macroscale materials, such as suspensions, fibers, films, and 3D macrostructures. Among these macromaterials, fibers are flexible, knittable, and easy to use, which can fully reflect the advantages of the structure and properties of 2D crystals. Therefore, the fabrication and application of 2D crystal–based fibers is of great importance for expanding the impact of 2D crystals. In this Review, 2D crystals that are successfully prepared are overviewed based on their composition of elements. Subsequently, methods for preparing 2D crystals, 2D crystals dispersions, and 2D crystal–based fibers are systematically introduced. Then, the applications of 2D crystal–based fibers, such as flexible electronic devices, high‐efficiency catalysis, and adsorption, are also discussed. Finally, the status‐of‐quo, perspectives, and future challenges of 2D crystal–based fibers are summarized. This Review provides directions and guidelines for developing new 2D crystal–based fibers and exploring their potentials in the fields of smart wearable devices.

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“…reported a shear exfoliation method for the scalable production of high-quality 2D materials92122. Wu et al 23. also accomplished the mass production of oxide nanosheets by a rapid thermal annealing treatment of the hydrous-chloride compounds.…”

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confidence: 99%

Rapid mass production of two-dimensional metal oxides and hydroxides via the molten salts method

et al. 2017

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Because of their exotic electronic properties and abundant active sites, two-dimensional (2D) materials have potential in various fields. Pursuing a general synthesis methodology of 2D materials and advancing it from the laboratory to industry is of great importance. This type of method should be low cost, rapid and highly efficient. Here, we report the high-yield synthesis of 2D metal oxides and hydroxides via a molten salts method. We obtained a high-yield of 2D ion-intercalated metal oxides and hydroxides, such as cation-intercalated manganese oxides (Na0.55Mn2O4·1.5H2O and K0.27MnO2·0.54H2O), cation-intercalated tungsten oxides (Li2WO4 and Na2W4O13), and anion-intercalated metal hydroxides (Zn5(OH)8(NO3)2·2H2O and Cu2(OH)3NO3), with a large lateral size and nanometre thickness in a short time. Using 2D Na2W4O13 as an electrode, a high performance electrochemical supercapacitor is achieved. We anticipate that our method will enable new path to the high-yield synthesis of 2D materials for applications in energy-related fields and beyond.

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Mass production of two-dimensional oxides by rapid heating of hydrous chlorides

Cited by 94 publications

References 45 publications

Two‐Dimensional Metal Oxide Nanomaterials for Next‐Generation Rechargeable Batteries

Two‐Dimensional Metal Oxide Nanomaterials for Next‐Generation Rechargeable Batteries

2D Crystal–Based Fibers: Status and Challenges

Rapid mass production of two-dimensional metal oxides and hydroxides via the molten salts method

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