Journal
CHEMISTRY OF MATERIALS
Volume 25, Issue 6, Pages 962-969Publisher
AMER CHEMICAL SOC
DOI: 10.1021/cm304127c
Keywords
fluoride nanoparticles; top-down approach; open framework; ionic liquid; Li/Na batteries
Ask authors/readers for more resources
Open framework materials as battery electrodes are drawing much more attention recently in view of the requirement on further improving energy storage and power densities, as well as use of a nonlithium cation (such as Na+ and Mg2+) transport. In this work, we show a novel top-down approach to prepare fluoride-based open framework (HTB-type FeF3 center dot 0.33H(2)O) as Li-and Na-storage cathode material, characterized by a topotactically solid-solid phase transformation and particle nanosizing with a 100% conversion yield. During this process, the typical Fe-based octahedral chains which are isolated in FeF3 center dot 3H(2)O precursor are well preserved but are connected with each other, triggered by the alleviated release of hydration water in an ionic liquid (IL) ambience. A comprehensive IL-based scenario to synthesize nanostructured open framework fluorides involving dissolution-precipitation, ionothermal and solid-solid breakdown methods is discussed, mainly depending on how the FeF6 octahedra are produced and linked.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available