Electrochemical Performance of Amorphous GeO x Powder Synthesized by Oxidation of NaGe Serving as an Anode for Lithium Ion Batteries

Abstract

© The Author(s) 2016. A highly amorphous GeO x powder has been synthesized by a soft chemical method. The method involves sodium germanium NaGe of Zintl phase was simply oxidized by isopropyl alcohol at room temperature and placed into distilled water. Amorphous GeO x powder serving as an anode for a Li-ion battery exhibited a high reversible capacity of 1268 mAh g -1 , high rate ability of 1035 mAh g -1 (current rate of 6A g -1 ) and good cycle performance of 930 mAh g -1 after 30 cycles. Thereby, our amorphous GeO x is to be potential anode material for Li-ion batteries.