Comparative study of Co, Cr and Al-doped LiMnO2 prepared by ion exchange

Autor:	Run Xiu Li, Ze Qiang He, Xian Ming Wu, Shang Chen, Ming Fei Xu
Rok vydání:	2008
Předmět:	Diffraction Materials science Ion exchange Mechanics of Materials Scanning electron microscope Phase (matter) Doping Analytical chemistry General Materials Science Cycling Electrochemistry
Zdroj:	Bulletin of Materials Science. 31:109-113
ISSN:	0973-7669 0250-4707
DOI:	10.1007/s12034-008-0019-z
Popis:	The Co, Cr and Al-doped LiMnO2 powders were prepared by ion exchange. Phase identification, surface morphology and electrochemical properties were studied by X-ray diffraction, scanning electron microscopy and galvanostatic charge-discharge experiments. The results show that the doped LiMnO2 keeps the structure of LiMnO2. As compared to LiMnO2, Co, Cr and Al-doped LiMnO2 offers higher discharge capacity and better cycling performance. The discharge capacities of Co, Cr and Al-doped LiMnO2 decreases yet the cycling performance improves with the increase of doping concentration. For these doped LiMnO2 at the same doping concentration, Cr-doping shows the highest discharge capacity and best cycling performance, Al-doping offers the lowest discharge capacity and Co-doping shows the worst cycling performance.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::c213eacaf0e24d72812e02bd409579e3 https://doi.org/10.1007/s12034-008-0019-z Zobrazit plný text záznamu Plný text ve formátu PDF