A study on the electrochemical properties of an Mg−Ni based thin film electrode for a microbattery

Abstract

In order to investigate the possibility of a microbattery using an Mg 2 Ni type alloy, we have studied the electrochemical properties of the Mg 1-x Ni x (x=0.33, 0.15, 0.10) thin film electrode. The thin films were prepared by DC magnetron co-sputtering using Mg and Ni targets and had an amorphous structure. The discharge capacities of the Mg 1-x Ni x (x=0.33, 0.15, 0.10) films increased as the Mg content increased, that of the Mg 0.9 Ni 0.1 electrode increased with repeated charge-discharge cycles reached the maximum value, 228 mAh/g, after 10 cycles. The surface morphology of the film was changed to a needle-type porous structure by cycling.

Improvement of Charge‐Discharge Characteristics of the Mg‐Ni Powder Electrodes at 55°C

“…Therefore, the Ni powder was mixed with Mg powder to form a compound phase around Mg powder to avoid intense electrochemical reaction. electrode, that of MN11 powder electrodes was low, indicating that Mg activity was restrained by Ni [15]. Previous studies [6,16] Figure 2(b).…”