Cr{sup 3+} modified LiMn{sub 2}O{sub 4} spinel intercalation cathodes through oxalic acid assisted sol-gel method for lithium rechargeable batteries

Journal Article · Tue Jan 04 00:00:00 EST 2005 · Materials Research Bulletin

DOI:https://doi.org/10.1016/j.materresbull.2004.08.013· OSTI ID:20883100

Thirunakaran, R ^[1]; Kim, Ki-Tae ^[2]; Kang, Yong-Mook ^[2]; Young-Lee, Jai ^[2]

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1. Central Electrochemical Research Institute, Karaikudi 630006 (India)
2. Department of Material Science and Engineering, Korea Advanced Institute of Science and Technology, 373-1, Gusong-Dong, Yusong-Gu, Daejon (Korea, Republic of)

To improve the cycle performance of eco-friendly and cost-effective spinel LiMn{sub 2}O{sub 4} as the cathode of 4 V class Li secondary batteries, the spinel phase LiCr{sub x}Mn{sub 2-x}O{sub 4} (x = 0.01-0.20) was synthesized by soft chemistry method using oxalic acid as chelating agent. The present technique results in better homogeneity, good surface morphology, shorter heat treatment time, sub-micron sized particles, good agglomeration and better crystallinity. Electrochemical studies were monitored in the potential range of 3-4.5 V. The present paper reveals that chromium substituted manganese spinel improves the structural stability of the parent material.

• OSTI ID: 20883100
• Journal Information: Materials Research Bulletin, Vol. 40, Issue 1; Other Information: DOI: 10.1016/j.materresbull.2004.08.013; PII: S0025-5408(04)00287-9; Copyright (c) 2004 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
AGGLOMERATION
CATHODES
CHELATING AGENTS
CHROMIUM
CHROMIUM IONS
ELECTRIC BATTERIES
ELECTROCHEMISTRY
ENERGY STORAGE
HEAT TREATMENTS
LITHIUM
LITHIUM OXIDES
MANGANESE
MANGANESE OXIDES
MORPHOLOGY
OXALIC ACID
SOL-GEL PROCESS
SPINELS
STABILITY
X-RAY DIFFRACTION