Effect of lithium powder size on the performance of lithium-powder/lithium trivanadate secondary batteries shown via impedance analysis
作者: Jae Ha LeeChoong Woon LimJun Kyu LeeSung Man ChoBok Ki KimWoo Young Yoon
作者单位: 1Department of Materials Science and Engineering, Korea University, 1, 5 Ga Anam-dong, Sungbuk-Gu, Seoul 136-701, Republic of Korea
2Department of Electronic Engineering, Kwangwoon University, 447-1, Wolgye-dong, Nowon-Gu, Seoul 139-701, Republic of Korea
刊名: Electrochimica Acta, 2014, Vol.131 , pp.202-206
来源数据库: Elsevier Journal
DOI: 10.1016/j.electacta.2014.01.114
关键词: Li powderSize effectlithium trivanadate
原始语种摘要: Abstract(#br)Effect of powder size on the performance of Li-powder/LiV 3 O 8 secondary cell has been studied. Li powder, synthesized via droplet emulsion technique, was used as the anode material in a coin cell (CR 2032) assembled in an Ar-filled glove box. Discharge-charge cycling was galvanostatically performed at 0.2 C-rate with cut-off voltages of 1.5–4.0V. Li powder with smaller particle size shows better cycling performance. The electrochemical properties (capacity versus cycle number, impedance) of the fabricated coin cells were evaluated. Based on the linear sweep voltammetry data, it was concluded that electrode with 15-μm powder size has larger surface area than electrodes with 35- and 55- μm powder size. Moreover, these electrodes produced larger current than...
全文获取路径: Elsevier  (合作)
影响因子:3.777 (2012)