Experimental Investigation of a Direct Methanol Fuel Cell with Hilbert Fractal Current Collectors

Table 1

Geometric information on current collectors.

Factors	Geometry
	SRCC	HFCC1	HFCC2	HFCC3
Total length of the Hilbert curve path (mm)	None	131.25	275.62	557.81
Width of the Hilbert curve path (mm)	None	2.20	2.20	1.10
Total perimeter opening length (mm)	614.12	266.90	555.65	1117.82
Total free open area (mm^2)	612.50	288.75	606.37	613.59
Total active MEA area (mm)	1225	1225	1225	1225
Free open ratio (%)	50.00%	23.50%	49.40%	50.00%