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V 2 O 5 Aerogel as a Versatile Cathode Material for Lithium and Sodium Batteries
Author(s) -
Moretti Arianna,
Maroni Fabio,
Osada Irene,
Nobili Francesco,
Passerini Stefano
Publication year - 2015
Publication title -
chemelectrochem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.182
H-Index - 59
ISSN - 2196-0216
DOI - 10.1002/celc.201402394
Subject(s) - intercalation (chemistry) , cathode , materials science , aerogel , electrochemistry , lithium (medication) , polyacrylic acid , anode , vanadium , electrode , chemical engineering , redox , ionic conductivity , ionic bonding , inorganic chemistry , nanotechnology , ion , chemistry , polymer , composite material , organic chemistry , electrolyte , metallurgy , medicine , engineering , endocrinology
Vanadium oxide gels are appealing cathode materials as they offer multiple electron redox processes leading to high cation‐storage capacities. Moreover, they are able to intercalate different ionic and molecular species. Apart from low electronic conductivity, one of the main factors hindering the use of highly porous V 2 O 5 gels is the difficulty in preserving their unique morphology, made up of an entangled network of thin ribbons, during conventional laminated electrode preparation. In this study, we tune the V 2 O 5 synthesis conditions and use an innovative and green binder system (polyacrylic acid and ethanol) to obtain electrodes with a morphology optimized for ion intercalation. The electrochemical performance of such electrodes, tested against lithium and sodium anodes, are shown to be excellent.