[1]College of Materials Science and Engineering;
Qingdao University of Science and Technology;
Qingdao 266042;
Shandong;
China;
[2]School of Materials Science and Engineering;
Beihang University;
Beijing 100191;
China;
[2]School of Materials Science and Engineering;
Beihang University;
Beijing 100191;
China;
[2]School of Materials Science and Engineering;
Beihang University;
Beijing 100191;
China;
[2]School of Materials Science and Engineering;
Beihang University;
Beijing 100191;
China;
[1]College of Materials Science and Engineering;
Qingdao University of Science and Technology;
Qingdao 266042;
Shandong;
China;
[1]College of Materials Science and Engineering;
Qingdao University of Science and Technology;
Qingdao 266042;
Shandong;
China;
Cobalt oxide; Free-standing catalyst; Binder/carbon free nanoarrays; Over-potential; Cyclic life;