Polyethyleneimine Modified Carbon Cloth Anode for Self-Pumping Enzymatic Glucose Biofuel Cell

Figure 7

SEM micrographs of the electrode surface: (a) and (b) unmodified carbon cloth; (c) and (d) PEI modified carbon cloth; (e) and (f) GOx/PEI modified carbon cloth.

(a)

(b)

(c)

(d)

(e)

(f)