Self-Assembly of 3D Fennel-Like Co₃O₄ with Thirty-Six Surfaces for High Performance Supercapacitor

Table 1

Comparison of the electrochemical performances of Co₃O₄ between literature and this study.

Morphology	Crystal size (Diameter)	Maximum (F·g^−1)	Capacitance retention	Ref.
Crater-like	0.5~1 μm	102	74% (after 500 cycles)	[19]
Particulates	10~50 nm	162	72.2% (after 1000 cycles)	[21]
Nanowires	20~40 nm	163	98% (after 1000 cycles)	[22]
Octahedron	±1.3 μm	182	99%(after 1000 cycles)	[23]
Nanorods	50~100 nm	202.5	99% (after 1000 cycles)	[24]
Nanotube	5~10 nm	273	88% (after 500 cycles)	[25]
Sheets	100–500 nm	357	87% (after 1000 cycles)	[26]
Bundle-like	±7.9 μm	390.4	95% (after 1000 cycles)	[20]
Fennel-like	4-5 μm	384.38	96.54% (after 1000 cycles)	This study