Characterizations and electrochemical performance of pure and metal-doped Li{sub 4}Ti{sub 5}O{sub 12} for anode materials of lithium-ion batteries

Journal Article · Mon Oct 15 00:00:00 EDT 2012 · Materials Research Bulletin

DOI:https://doi.org/10.1016/J.MATERRESBULL.2012.04.137· OSTI ID:22215509

Jeong, Euh Duck ^[1]; Han, Hyun Ju ^[1]; Jung, Ok Sang ^[2]; Ha, Myoung Gyu ^[1]; Doh, Chil Hoon; Hwang, Min Ji ^[3]; Yang, Ho-Soon ^[4]

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1. Division of High-Technology Materials Research, Korea Basic Science Institute, Pusan 618-230 (Korea, Republic of)
2. Department of Chemistry, Pusan National University, Pusan 609-735 (Korea, Republic of)
3. Korea Electrotechnology Research Institute, Changwon 642-120 (Korea, Republic of)
4. Department of Physics, Pusan National University, Pusan 609-735 (Korea, Republic of)

Pure and metal (Cu, Al, Sn, and V)-doped Li{sub 4}Ti{sub 5}O{sub 12} powders are prepared with solid-state reaction method. The effects of dopants on the physical and electrochemical properties are characterized by using TGA, XRD, and SEM. Compared with pure Li{sub 4}Ti{sub 5}O{sub 12}, metal-doped Li{sub 4}Ti{sub 5}O{sub 12} powders show structural stability and enhanced lithium ion diffusivity brought by doped metal ions. Voltage characteristics and initial charge–discharge characteristics according to the C rates in pure and metal-doped Li{sub 4}Ti{sub 5}O{sub 12} electrode materials are studied. Pure Li{sub 4}Ti{sub 5}O{sub 12} powder shows a relatively good discharge capacity of 164 mAh/g at a rate 0.2C, and some of metal-doped Li{sub 4}Ti{sub 5}O{sub 12} powders show higher discharge capacities. Metal-doped Li{sub 4}Ti{sub 5}O{sub 12} powders are promising candidates as anode materials for lithium-ion batteries.

• OSTI ID: 22215509
• Journal Information: Materials Research Bulletin, Vol. 47, Issue 10; Conference: IFFM2011: 2011 international forum on functional materials, Jeju Island (Korea, Republic of), 28-31 Jul 2011, AFM-2: 2. special symposium on advances in functional materials, Jeju Island (Korea, Republic of), 28-31 Jul 2011; Other Information: Copyright (c) 2012 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
DOPED MATERIALS
ELECTRIC BATTERIES
LITHIUM IONS
LITHIUM TITANATES
POWDERS
SCANNING ELECTRON MICROSCOPY
THERMAL GRAVIMETRIC ANALYSIS
X-RAY DIFFRACTION