In situ grown hierarchical NiO nanosheet@nanowire arrays for high-performance electrochromic energy storage applications.

ABSTRACT: Electrodes with hierarchical nanoarchitectures could promote electrochemical properties due to their largely exposed active sites and quick charge transfer. Herein, in situ grown hierarchical NiO nanosheet@nanowire films are reported by a one-step hydrothermal process followed by heat treatment. The unique NiO hierarchical nanostructures, which are composed of NiO nanowires grown on the surface of a nanosheet array, show improved electrochromic properties such as large optical modulation in different light regions (95% at 550 nm and 50.6% at 1000 nm), fast color change (9.8/5.4 s) and better coloring efficiency (91.2 cm² C^-1) with long-term cycling properties (82.2% after 700 cycles). Simultaneously, the hierarchical nanostructures possess optimal areal capacit

SUBMITTER: Yao S 

PROVIDER: S-EPMC9642607 | biostudies-literature | 2022 Nov

REPOSITORIES: biostudies-literature