Porous Electrodes with High Pt Utilization Obtained by Ion-Exchange/Electrodeposition

Authors

Si-guo CHEN, The State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Department of Chemistry, College of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, China;
Wei DING, The State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Department of Chemistry, College of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, China;
Xue-qiang QI, The State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Department of Chemistry, College of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, China;
Li LI, The State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Department of Chemistry, College of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, China;
Zi-hua DENG, The State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Department of Chemistry, College of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, China;
Zi-dong WEI, State Key Lab for Physical Chemistry of Solid Surfaces，Department of Chemistry，College of Chemistry and Chemical Engineering, Xiamen University，Xiamen 361005，Fujian, China;Follow

Corresponding Author

Zi-dong WEI(zdwei@cqu.edu.cn)

Abstract

We report a novel method based on ion-exchange/electrodeposition (IEE) for constructing high Pt utilization porous electrodes. The electrode prepared using IEE was assessed by linear sweep voltammetry (LSV), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and single cell test. The preliminary results show that the undesired ion-exchange between Pt anion and surface functional group in carbon black can be eliminated through the electrode preparation process, and every Pt particle prepared by IEE is expected to be deposited on the three-phase reaction zone and thus can be fully utilized in fuel cell reactions. The Pt particle size, shape and distribution obtained by IEE can be controlled by modulating the IEE technique and cycles. The power output of the MEA employing a Pt/C electrode prepared by IEE with a Pt loading of 0.014 mgPt•cm^-2 is equivalent to that employing a conventional Nafion-bonded Pt/C electrode with a Pt loading of 0.3 mgPt•cm^-2.

Graphical Abstract

Keywords

fuel cells, ion-exchange/electrodeposition, Pt utilization

DOI Link

https://doi.org/10.61558/2993-074X.2097

Publication Date

2013-02-28

Online Available Date

2012-07-05

Revised Date

2012-06-30

Received Date

2012-06-04

Recommended Citation

Si-guo CHEN, Wei DING, Xue-qiang QI, Li LI, Zi-hua DENG, Zi-dong WEI. Porous Electrodes with High Pt Utilization Obtained by Ion-Exchange/Electrodeposition[J]. Journal of Electrochemistry, 2013 , 19(1): 53-58.
DOI: 10.61558/2993-074X.2097
Available at: https://jelectrochem.xmu.edu.cn/journal/vol19/iss1/4