Orthorhombic LiMnO2 nanorods as cathode materials for lithium-ion batteries: Synthesis and electrochemical properties. Issue 7 (15th May 2016)

• Record Type: Journal Article
• Authors: Zhao, Hongyuan; Liu, Shanshan; Liu, Xingquan; Tan, Ming; Wang, Zhenwei; Cai, Yu; Komarneni, Sridhar
• Is Part Of: Ceramics international. Volume 42:Issue 7(2016)
• Page Start: 9319
• Page End: 9322
• Publication Date: 2016-05-15
• Subjects: Lithium-ion battery -- Cathode material -- LiMnO2 -- Nanorods -- Solid-state synthesis; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2016.01.207
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: A simple solid-state process was developed to prepare the orthorhombic LiMnO2 nanorods by using Mn2 O3 nanorods as a template, the latter was prepared via a thermal decomposition process. The obtained product showed good rod-shaped morphology and could be indexed to the orthorhombic LiMnO2 with a space group of Pmnm. Electrochemical tests showed that the LiMnO2 nanorods exhibited a discharge capacity of 183.2 mA h g −1 with high coulombic efficiency at 0.1 C between 2.0 and 4.3 V. After 35 cycles, the discharge capacity still reached up to 175.6 mA h g −1, which is a high capacity retention. Furthermore, the LiMnO2 nanorods presented excellent rate capability and small charge transfer resistance. Such high performance might be ascribed to the one-dimensional nanostructures with good crystallinity, which could effectively facilitate the charge and electron transport and enhance the electrode-filled ratio.