A.C conductivity and dielectric properties of spinel LiMn2O4 nanorods. Issue 10 (December 2015)

• Record Type: Journal Article
• Authors: Nageswara Rao, B.; Padmaraj, O.; Narsimulu, D.; Venkateswarlu, M.; Satyanarayana, N.
• Is Part Of: Ceramics international. Volume 41:Issue 10(2015)Part B
• Page Start: 14070
• Page End: 14077
• Publication Date: 2015-12
• Subjects: A. Microwave processing -- C. Electrical properties -- C. Dielectric properties -- E. Batteries; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2015.07.026
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: Spinel LiMn2 O4 nanorods were prepared by a rapid two steps process. Powder XRD results revealed the formation of cubic crystal structured LiMn2 O4 phase. FE-SEM images clearly showed the formation of well defined one-dimensional (1-D) nanorods. The electrical conductivity of spinel LiMn2 O4 nanorods was evaluated by analyzing the measured impedance data and found to be 1.81×10 −4 S cm −1 at 303 K. Dielectric studies showed that the LiMn2 O4 nanorods exhibit high dielectric constant and it is found to increase with increase in temperature. The electric modulus studies revealed the non-Debye nature of the LiMn2 O4 nanorods. Further, the electrochemical performance of the fabricated Swagelok-type lithium cells using the prepared LiMn2 O4 nanorods was investigated. The charge–discharge studies of the fabricated Swagelok-type cell showed that the spinel LiMn2 O4 nanorods exhibit good cycleability in the voltage range 3.3–4.4 V.