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Synthesis and electrochemical properties of layered Li[Li(1/3−x/3)CrxMn(2/3−2x/3)]O2 prepared by sol–gel method by I. Ruth Mangani; C.W. Park; J. Kim is a Engineering article available to read on EtoBox.
What is Synthesis and electrochemical properties of layered Li[Li(1/3−x/3)CrxMn(2/3−2x/3)]O2 prepared by sol–gel method about?
The Li[Li (1/3-x/3) Cr x Mn (2/3-2x/3) ]O 2 (0.15 ≤ x ≤ 0.3) cathode materials were synthesized by sol-gel process using aqueous solutions of metal acetates and citric acid as the chelating agent. The precipitate of metal citrate was dried in a vacuum oven for 10 h at 100 • C. After drying, the gel precursor was calcined at 300 • C for about 10 h. The resulted powder was ground and heated at 900 • C. The structural characterization was carried out by fitting the XRD data with Rietveld program. The samples exhibited a well defined layered structure and the unit cell parameters linearly increased with increasing chromium contents in Li[Li (1/3-x/3) Cr x Mn (2/3-2x/3) ]O 2 Surface morphology was determined by SEM and HRTEM and it is found that the cathode material consisted of highly ordered single crystalline particles with layered-hexagonal structure. Test cells were assembled and cycled in the voltage range of 2.0-4.9 V with a current density of 7.947 mA/g. Electrode with (x = 0.2) delivered a high reversible capacity of around 280 mA h/g in cycling.
Who reads Synthesis and electrochemical properties of layered Li[Li(1/3−x/3)CrxMn(2/3−2x/3)]O2 prepared by sol–gel method?
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- Author
- I. Ruth Mangani; C.W. Park; J. Kim
- Publisher
- Elsevier Science; Elsevier ; Elsevier Ltd.; Elsevier BV (ISSN 0013-4686)
- Published
- 2006
- Language
- EN
- Field
- Engineering (Physical Sciences)