High-Performance Electrochromic Devices Based on Size-Controlled 2D WO₃ Nanosheets Prepared Using the Intercalation Method.

ABSTRACT: It is difficult to obtain ultrathin two-dimensional (2D) tungsten trioxide (WO₃) nanosheets through direct exfoliation from bulk WO₃ in solution due to the strong bonding between interlayers. Herein, WO₃ nanosheets with controllable sizes were synthesized via K⁺ intercalation and the exfoliation of WO₃ powder using sonication and temperature. Because of the intercalation and expansion in the interlayer distance, the intercalated WO₃ could be successfully exfoliated to produce a large quantity of individual 2D WO₃ nanosheets in N-methyl-2-pyrrolidone under sonication. The exfoliated ultrathin WO₃ nanosheets exhibited better electrochromic performance in an electrochromic device than WO₃

SUBMITTER: Li CA 

PROVIDER: S-EPMC10780075 | biostudies-literature | 2023 Dec

REPOSITORIES: biostudies-literature