Abstract
Spinel LiMn1.95M0.05O4 (M: Al, Co, Fe, Ni, or Y) is prepared by a combustion synthesis, which is a simple, rapid and cost-effective process for obtaining oxide powders. The spinel is obtained by combustion of lithium hydroxide, manganese nitrate, M-nitrates, and urea at about 280°C for 1 min. Well-defined spinel LiMn1.95M0.05O4 was obtained by further heat-treatment at 800°C for 10 h. The synthesized LiMn1.95M0.05O4 shows lower initial capacities, viz. 90-132 mAh/g than undoped LiMn2O4. The latter has an initial capacity of 146 mAh/g which fades to 100 mAh/g with cycling. On the other hand, LiMn1.95Co0.05O4, LiMn1.95Ni0.05O4, and LiMn1.95Y0.05O4 display better cycleability than LiMn2O4.
Original language | English |
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Pages (from-to) | 154-159 |
Number of pages | 6 |
Journal | Journal of Power Sources |
Volume | 103 |
Issue number | 1 |
DOIs | |
Publication status | Published - 2001 Dec 30 |
All Science Journal Classification (ASJC) codes
- Renewable Energy, Sustainability and the Environment
- Energy Engineering and Power Technology
- Physical and Theoretical Chemistry
- Electrical and Electronic Engineering