ZHOU Yu, LIU Zhongliang, HOU Junxian, et al. Study of urine-powered microbial fuel cell anode modified by graphene-type novel materials[J]. CIESC Journal, 2018, (6): 2790-2796.
Urine-powered microbial fuel cells (UMFCs) are bioelectrochemical system that can recover energy from urine-a typical wastewater produced in urban and aerospace ships. The anode is the key unit determining the UMFC performance. To improve its performance
black phosphorus (BP)
expanded graphite (EG) and carboxyl graphene (COOH-GN) which are three graphene-type novel materials were used to modify carbon cloth anode and three anodes (BP/CC
EG/CC and COOH-GN/CC) were thus fabricated. The surface of the carbon cloth becomes rougher after modification. The results of electrochemical impedance spectroscopy tests demonstrated that the modified anodes have low resistance and excellent electrochemical properties. Using BP/CC
EG/CC and COOH-GN/CC as the UMFC anodes respectively
the UMFCs yielded maximum voltage output of 587.71
512.46 and 492.49 mV
respectively
power density of 5254.43
3925.44 and 3252.05 mW/m3
respectively
which clearly shows that the BP modification is the best.