**Electrochemical Passive Properties of AlxCoCrFeNi (x = 0, 0.25, 0.50, 1.00) High-Entropy Alloys in Sulfuric Acids**

Swe-Kai Chen

*Center for Nanotechnology, Materials Science, and Microsystems (CNMM), National Tsing Hua University, Hsinchu, Taiwan* 
