title: Synthesis and electrochemical properties of Li0.33MnO2 nanorods as positive electrode material for 3 V lithium batteries.
abstract: In this study, one-dimensional Li0.33MnO2 nanorods were synthesized by a solid state reaction using gamma-MnO2 as a precursor. Gamma-MnO2 was prepared under different reaction times by a redox process. The HR-TEM results showed that the diameter and length of the Li0.33MnO2 nanorods are 5-20 nm and about 200 nm, respectively. The Li0.33MnO2 nanorods delivered a discharge capacity of 157 mA h g(-1) at 1 C, and retained 97% of their initial capacity over 30 cycles. Good rate performance was also observed, with discharge capacities of 201 and 133 mA h g(-1) at 0.1 C and 2 C, respectively. The morphology of the nanorods could increase their electrochemical properties, resulting in higher capacity and rate performance.
authors.affiliation: Energy Efficient Materials Team, Korea Institute of Ceramic Engineering and Technology, Seoul 153-801, Republic of Korea.
authors.forename: Mok-Hwa
authors.initials: MH
authors.lastname: Kim
authors.forename: Kwang-Bum
authors.initials: KB
authors.lastname: Kim
authors.forename: Sun-Min
authors.initials: SM
authors.lastname: Park
authors.forename: Chul-Tae
authors.initials: CT
authors.lastname: Lee
authors.forename: Kwang Chul
authors.initials: KC
authors.lastname: Roh