Spent Tea Leaves and Coffee Grounds as Potential Biocathode for Improved Microbial Electrosynthesis Performance

Figure 3

Cyclic voltammogram (CV) profiles recorded at different scan rates (1–200 mV/s) and applied potential (−0.8 to +0.2 V) using (a) control, (b) STL, (c) SCG, and (d) CV at 1 mV/s.

(a)

(b)

(c)

(d)