Processing and properties of amorphous manganese dioxide formed by sol-gel procedures

Jun John Xu, Stefano Passerini, Boone B. Owens, William H Smyrl

Research output: Contribution to journalConference articlepeer-review

3 Scopus citations

Abstract

Sol-gel derived amorphous manganese dioxide (a-MnO2) showed extremely high reversible lithium intercalation capacity. The composition and structure of the material were modified by heating at different temperatures. Cycling performance of the modified samples suggests that lowering the water content in the material is beneficial, while introducing crystallinity is detrimental, to its cyclability. A novel double-solvent-exchange process was tried for the processing of the material. Preliminary results indicated significant improvement in the reversibility of the insertion/release cycles.

Original languageEnglish (US)
Pages (from-to)119-124
Number of pages6
JournalMaterials Research Society Symposium - Proceedings
Volume548
StatePublished - Dec 1 1999
EventProceedings of the 1998 MRS Fall Meeting - Symposium 'Solid State Ionics V' - Boston, MA, USA
Duration: Nov 28 1998Dec 3 1998

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