Synthesis and electrochemistry of a vanadium-pillared manganese oxide |
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| Institution: | 1. School of Chemistry and ARC Centre of Excellence for Electromaterials Science, Monash University, Clayton, Victoria 3800, Australia;2. Department of Applied Science, Faculty of Science, Kochi University, Kochi 780-8520, Japan;1. Material Science Division, Shriram Institute for Industrial Research, 19 University Road Delhi 110007, India;2. Department of Chemistry, University of Allahabad, Allahabad-211002 (U.P.), India;1. Centro de Investigaciones en Catálisis (CICAT), Universidad Industrial de Santander, Sede UIS Guatiguará, Piedecuesta, Santander, Colombia. C.P. 681011;2. Centro de Investigación Científica y Tecnológica en Materiales y Nanociencias (CMN), Universidad Industrial de Santander, Piedecuesta, Santander, Colombia. C.P. 681011;3. Centro de Investigación, Innovación, y Desarrollo de Materiales (CIDEMAT), Facultad de Ingeniería, Universidad de Antioquia (UdeA), Calle 70 No. 52-21, Medellín, Colombia. C.P. 050010 |
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| Abstract: | A new manganese dioxide pillared by vanadium oxide species has been synthesized hydrothermally from permanganate. It has the electrochemically active MnO2 layer structure, which has been extensively studied as a battery cathode. The vanadium oxide ions, together with the water molecules, reside in between the oxide sheets; dehydration occurs without structural change. The (VOy)0.1MnO2·nH2O has a rhombohedral structure, with hexagonal parameters a=2.843(6) Å, c=22.08(2) Å. It reacts readily with lithium with a capacity around 150 mAh g−1; the pillar ions do not appear to impede reaction. |
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