Electrochemical Performance of Cu_2SO_3·CuSO_3·2H_2O Synthesized by Hydrothermal Method

摘要

The mixed valence copper Cu_2SO_3·CuSO_3·2H_2O with durian-like was synthesized by a simple hydrothermal method at 80～. The double sulfites obtained were identified by X-ray powder diffraction (XRD) and scanning electron microscopy (SEM). The electrochemical performance of the salt was evaluated by cyclic voltammetry (CV) and charge-discharge test as the lithium ion battery electrode material. The electrode exhibited high initial discharge capacity but extremely low charge capacity, which illustrates that Cu_2SO_3·CuSO_3·2H_2O is not suitable for lithium ion battery electrode negative material.