Top-Down Synthesis of Open Framework Fluoride for Lithium and Sodium Batteries
作者： Chilin Li , Congling Yin , Xiaoke Mu , Joachim Maier
DOI: 10.1021/CM304127C
关键词:
摘要: 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, well use a nonlithium cation (such Na+ Mg2+) transport. In this work, we show novel top-down approach to prepare fluoride-based open (HTB-type FeF3·0.33H2O) Li- Na-storage cathode material, characterized by topotactically solid–solid phase transformation particle nanosizing with 100% conversion yield. During process, typical Fe-based octahedral chains which isolated FeF3·3H2O precursor preserved but connected each other, triggered alleviated release hydration water an ionic liquid (IL) ambience. A comprehensive IL-based scenario synthesize nanostructured fluorides involving dissolution–precipitation, ionothermal breakdown methods is discussed, mainly depending how FeF6 octahedra produced linked.
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