Effect of polymer modified anodes on electrochemical properties and cobalt leaching of PEMFC
GUO Xibin1，WANG Qiao2，CHENG Xiaoqi3
（1. College of Electronic and Electrical Engineering, Zhengzhou University of Science and Technology, Zheng‐
zhou 450064, China; 2. College of Electrical Engineering, Henan University of Technology, Zhengzhou 450000,
Henan, China; 3. School of Instrumentation and Optoelectric Engineering, Beihang University, Beijing 100191,
China）
Abstract：The electrochemical polymerization reaction between aniline and thiophene monomer was carried out
on the electrochemical workstation, and which was deposited on the surface of carbon paper, and the polymer modi‐
fied anode was prepared. The anode was used for extraction and recovery of lithium cobalt oxide in PEMFC, and
the factors effect the electric capacity of PEMFC were analyzed, and the leaching state of lithium cobalt oxide cath‐
ode was tested. The results show that the modified PTh carbon paper forms a folded surface after electrodeposition,
and the specific surface area increases rapidly. PTh modified carbon paper has been prepared by electrochemical
polymerization, and a CV curve with a larger area has been formed after modification. The anode is obtained a larg‐
er specific surface area by using the electrochemical polymerization, which significantly improves the electrical
performance of unit and shows a higher chemical stability and electric storage capacity than the polyaniline. The
PTh modified carbon paper reaches the largest Co2+ growth rate when the operation cycle is 245 h, which is more
likely to achieve the effect of Co (Ⅲ) leaching, and acquires a strong production capacity.
2022, Vol. 32 
