Rapid mass production of two-dimensional metal oxides and hydroxides via the molten salts method.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 28555669.
- Also identified by DOI 10.1038/ncomms15630 and PMC identifier 5499201.
- Licence recorded as CC BY.
- The licence permits redistribution, so the abstract is shown in full and the full text is available from the publisher.
Abstract
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 (Na<sub>0.55</sub>Mn<sub>2</sub>O<sub>4</sub>·1.5H<sub>2</sub>O and K<sub>0.27</sub>MnO<sub>2</sub>·0.54H<sub>2</sub>O), cation-intercalated tungsten oxides (Li<sub>2</sub>WO<sub>4</sub> and Na<sub>2</sub>W<sub>4</sub>O<sub>13</sub>), and anion-intercalated metal hydroxides (Zn<sub>5</sub>(OH)<sub>8</sub>(NO<sub>3</sub>)<sub>2</sub>·2H<sub>2</sub>O and Cu<sub>2</sub>(OH)<sub>3</sub>NO<sub>3</sub>), with a large lateral size and nanometre thickness in a short time. Using 2D Na<sub>2</sub>W<sub>4</sub>O<sub>13</sub> 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.