A Conductive Additive for Zn Electrodes in Secondary Ni/Zn Batteries: The Magneli Phase Titanium Sub-Oxides Conductive Ceramic Ti_nO_(2n-1)

摘要

The Magneli phase titanium sub-oxides conductive ceramic particles were added to Zn electrodes for use in Ni/Zn batteries. X-ray diffraction analysis indicated that the basis of the conductive ceramic was Ti_4O_7 and transmission electron microscopy showed that the particles were uniform in shape and size. The electrochemical performance of a Zn electrode with the conductive ceramic as the conductive additive was investigated by charge/discharge cycling test, cyclic voltammetry, and Tafel plot. Compared with a Zn electrode with acetylene black and without conductive additive, the electrode with conductive ceramic showed better cycling stability, higher discharge capacity, and corrosion resistance.