Structure and electrochromism of two-dimensional octahedral molecular sieve h'-WO₃.

ABSTRACT: Octahedral molecular sieves (OMS) are built of transition metal-oxygen octahedra that delimit sub-nanoscale cavities. Compared to other microporous solids, OMS exhibit larger versatility in properties, provided by various redox states and magnetic behaviors of transition metals. Hence, OMS offer opportunities in electrochemical energy harnessing devices, including batteries, electrochemical capacitors and electrochromic systems, provided two conditions are met: fast exchange of ions in the micropores and stability upon exchange. Here we unveil a novel OMS hexagonal polymorph of tungsten oxide called h'-WO₃, built of (WO₆)₆ tunnel cavities. h'-WO₃ is prepared by a one-step soft chemistry aqueous route leading to the hydrogen bronze h'-H_0.07</

SUBMITTER: Besnardiere J 

PROVIDER: S-EPMC6338762 | biostudies-literature | 2019 Jan

REPOSITORIES: biostudies-literature