Recent Progress in the Mechanistic Understanding of Formic Acid Oxidation on Pt Electrode

Authors

Jie XU, Hefei National Laboratory for Physical Science at Microscale and Department of Chemical Physics, University of Science and Technology of China, Hefei, 230026, China;
Dao-chuan JIANG, Hefei National Laboratory for Physical Science at Microscale and Department of Chemical Physics, University of Science and Technology of China, Hefei, 230026, China;
Dong MEI, Hefei National Laboratory for Physical Science at Microscale and Department of Chemical Physics, University of Science and Technology of China, Hefei, 230026, China;
Zheng-da HE, Hefei National Laboratory for Physical Science at Microscale and Department of Chemical Physics, University of Science and Technology of China, Hefei, 230026, China;
Yan-xia CHEN, Hefei National Laboratory for Physical Science at Microscale and Department of Chemical Physics, University of Science and Technology of China, Hefei, 230026, China;Follow

Corresponding Author

Yan-xia CHEN(yachen@ustc.edu.cn)

Abstract

This article reviews the recent progress in understanding of the mechanisms for formic acid oxidation on Pt electrode. There are two pathways for formic acid oxidation on Pt electrode: (1) Indirect Pathway through which HCOOH is oxidized to CO₂ through CO_ad intermediate. This pathway contributes only 1% of the total current; (2) Direct Pathway where HCOOH is oxidized directly to CO₂. The results from IR Spectroscopy, single-crystal electrochemistry and DFT calculation all support that the bridge-bonded formate is neither the intermediate of direct pathway nor the precursor for CO_ad formation in indirect pathway. Possible mechanism in the direct pathway for formic acid oxidation is discussed.

Graphical Abstract

Keywords

formic acid oxidation, platinum electrode, dual-pathway mechanism, indirect pathway, direct pathway, formate pathway

DOI Link

https://doi.org/10.13208/j.electrochem.130891

Publication Date

2014-08-28

Online Available Date

2014-01-30

Revised Date

2014-01-22

Received Date

2013-11-13

Recommended Citation

Jie XU, Dao-chuan JIANG, Dong MEI, Zheng-da HE, Yan-xia CHEN. Recent Progress in the Mechanistic Understanding of Formic Acid Oxidation on Pt Electrode[J]. Journal of Electrochemistry, 2014 , 20(4): 333-342.
DOI: 10.13208/j.electrochem.130891
Available at: https://jelectrochem.xmu.edu.cn/journal/vol20/iss4/6