Processing and performance of V2O5 xerogel, aerogel, and aerogel-like materials as lithium intercalation hosts

Leland H. Manhart, Jun John Xu, Fabrice Colistier, Stefano Passerini, Boone B. Owens, William H Smyrl

Research output: Contribution to journalConference articlepeer-review

1 Scopus citations

Abstract

Various forms of vanadium pentoxide, including xerogel, aerogel, and aerogel-like forms, were prepared by sol-gel synthesis and processed by novel procedures following synthesis. It was demonstrated that the intrinsic thermodynamics of lithium intercalation of the ARG and ARG-like materials prepared by solvent exchange processes involving methyl formate (MF/ARG and MF/ARG-like) are identical, while they are drastically different from those of the parent XRG, which gives rise to significantly increased specific energies for the MF/ARG or MF/ARG-like as lithium intercalation hosts. All three forms are capable of reversibly intercalating up to four moles of Li+ ions per mole of V2O5 electrochemically and can be cathode candidates for rechargeable lithium batteries. Various processing methods for fabricating composite electrodes with the XRG led to specific capacity in the range of 300 to 350 mAh/g at C4Li/20 rate, and good cyclability.

Original languageEnglish (US)
Pages (from-to)113-118
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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