LiNi{sub x}Cu{sub 0.5{minus}x}Mn{sub 1.5}O{sub 4} spinel electrodes, superior high-potential cathode materials for Li batteries. 1: Electrochemical and structural studies
- Covalent Associates, Inc., Woburn, MA (United States)
- Argonne National Lab., IL (United States)
- Brookhaven National Lab., Upton, NY (United States)
LiNi{sub x}Cu{sub 0.5{minus}x}Mn{sub 1.5}O{sub 4} (0 {le} x {le} 0.5) spinel materials that are of interest as electrodes for lithium-ion batteries have been studied by crystallographic and electrochemical methods. Electrochemical results show that the inclusion of Ni into the Cu-modified spinel increases the overall reversible capacity from 72 mAh/g with LiCu{sub 0.5}Mn{sub 1.5}O{sub 4} (x = 0) at 4.95 V to 120 mAh/g with LiNi{sub 0.5}Mn{sub 1.5}O{sub 4} (x = 0.5) at 4.6 V. The Cu-rich spinels in the LiNi{sub x}Cu{sub 0.5{minus}x}Mn{sub 1.5}O{sub 4} system show enhanced stability upon cycling. These spinel products are difficult to prepare in single-phase form. Neutron diffraction data show that the end members LiNi{sub 0.5}Mn{sub 1.5}O{sub 4} was determined from a combined X-ray and neutron diffraction profile refinement to be Li{sub 0.97}Ni{sub 0.42}Mn{sub 1.61}O{sub 4}.
- Research Organization:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- W-31109-ENG-38
- OSTI ID:
- 345375
- Journal Information:
- Journal of the Electrochemical Society, Vol. 146, Issue 3; Other Information: PBD: Mar 1999
- Country of Publication:
- United States
- Language:
- English
Similar Records
LiMn{sub 2{minus}x}Cu{sub x}O{sub 4} spinels (0.1 {le} x {le} 0.5): A new class of 5 V cathode materials for Li batteries. 1: Electrochemical, structural, and spectroscopic studies
LiMn{sub 2{minus}x}Cu{sub x}O{sub 4} spinels -- 5 V cathode materials