Synthesis of electrode materials by reduction of KMnO4 with NiCl2·6H2O in aqueous solutions
| Autor: | Soo-Yung Kim, J.H. Kim, Sun-Pil Kim |
|---|---|
| Rok vydání: | 2006 |
| Předmět: |
Aqueous solution
Renewable Energy Sustainability and the Environment Chemistry Inorganic chemistry Energy Engineering and Power Technology Redox Lithium battery Potassium permanganate chemistry.chemical_compound Phase (matter) Electrode Oxidizing agent Electrical and Electronic Engineering Physical and Theoretical Chemistry Monoclinic crystal system |
| Zdroj: | Journal of Power Sources. 163:294-299 |
| ISSN: | 0378-7753 |
| DOI: | 10.1016/j.jpowsour.2006.06.080 |
| Popis: | The nickel–manganese compounds were synthesized by redox reactions in aqueous solutions using potassium permanganate as an oxidizing agent at ambient temperature. Also, a layered Li–Ni–Mn–O system was synthesized by using a nickel–manganese compound as precursor for electrode materials. X-ray diffraction patterns of the lithiated Li 1.296 Ni 0.056 Mn 0.648 O 2 sample were indexed to a layered structure based on hexagonal α-NaFeO 2 (space group: R -3 m , 166) with signs of monoclinic-related peaks indicating the existence of monoclinic Li 2 MnO 3 phase. The lithiated Li 1.296 Ni 0.056 Mn 0.648 O 2 electrode provides the initial discharge capacity of 108 mAh g −1 and the maximum discharge capacity of 192 mAh g −1 between 2.0 and 4.8 V versus Li/Li + at 0.2 mA cm −2 . |
| Databáze: | OpenAIRE |
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