Novel Fe 2 O 3 microspheres composed of triangular star-shaped nanorods as an electrode for supercapacitors.

Fe 2 O 3 microspheres with a unique structure were reported for the first time in this article and showed excellent cycling stability as a negative electrode for supercapacitors. A high areal specific capacitance of 1465.26 mF cm -2 was also achieved in sulfur-doped Fe 2 O 3 . An asymmetric supercapacitor was assembled demonstrating its potential for practical use.