Electrochemical impedance studies of electrooxidation of methanol and formic acid on Pt/C catalyst in acid medium

Zhen Bo Wang; Yuan Yuan Chu; Ai Fen Shao; Peng Jian Zuo; Ge Ping Yin

doi:10.1016/j.jpowsour.2009.01.008

Electrochemical impedance studies of electrooxidation of methanol and formic acid on Pt/C catalyst in acid medium

Zhen Bo Wang^*
, Yuan Yuan Chu
, Ai Fen Shao
, Peng Jian Zuo
, Ge Ping Yin

^*Corresponding author for this work

School of Chemistry and Chemical Engineering, Harbin Institute of Technology

Research output: Contribution to journal › Article › peer-review

28 Scopus citations

Abstract

Cyclic voltammetry (CV), amperometric i - t experiments, and electrochemical impedance spectroscopy (EIS) measurements were carried out by using glassy carbon disk electrode covered with the Pt/C catalyst powder in solutions of 0.5 mol L^-1 H₂SO₄ containing 0.5 mol L^-1 CH₃OH and 0.5 mol L^-1 H₂SO₄ containing 0.5 mol L^-1 HCOOH at 25 °C, respectively. Electrochemical measurements show that the activity of Pt/C for formic acid electrooxidation is prominently higher than for methanol electrooxidation. EIS information also discloses that the electrooxidation of methanol and formic acid on the Pt/C catalyst at various polarization potentials show different impedance behaviors. The mechanisms and the rate-determining steps of formic acid electrooxidation are also changed with the increase of the potential. Simultaneously, the effects of the electrode potentials on the impedance patterns were revealed.

Original language	English
Pages (from-to)	336-340
Number of pages	5
Journal	Journal of Power Sources
Volume	190
Issue number	2
DOIs	https://doi.org/10.1016/j.jpowsour.2009.01.008
State	Published - 15 May 2009
Externally published	Yes

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Keywords

Electrochemical impedance
Formic acid electrooxidation
Methanol electrooxidation
Pt/C catalyst

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10.1016/j.jpowsour.2009.01.008

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@article{a0deb0910e604379adff0335845eeb94,

title = "Electrochemical impedance studies of electrooxidation of methanol and formic acid on Pt/C catalyst in acid medium",

abstract = "Cyclic voltammetry (CV), amperometric i - t experiments, and electrochemical impedance spectroscopy (EIS) measurements were carried out by using glassy carbon disk electrode covered with the Pt/C catalyst powder in solutions of 0.5 mol L-1 H2SO4 containing 0.5 mol L-1 CH3OH and 0.5 mol L-1 H2SO4 containing 0.5 mol L-1 HCOOH at 25 °C, respectively. Electrochemical measurements show that the activity of Pt/C for formic acid electrooxidation is prominently higher than for methanol electrooxidation. EIS information also discloses that the electrooxidation of methanol and formic acid on the Pt/C catalyst at various polarization potentials show different impedance behaviors. The mechanisms and the rate-determining steps of formic acid electrooxidation are also changed with the increase of the potential. Simultaneously, the effects of the electrode potentials on the impedance patterns were revealed.",

keywords = "Electrochemical impedance, Formic acid electrooxidation, Methanol electrooxidation, Pt/C catalyst",

author = "Wang, \{Zhen Bo\} and Chu, \{Yuan Yuan\} and Shao, \{Ai Fen\} and Zuo, \{Peng Jian\} and Yin, \{Ge Ping\}",

year = "2009",

month = may,

day = "15",

doi = "10.1016/j.jpowsour.2009.01.008",

language = "英语",

volume = "190",

pages = "336--340",

journal = "Journal of Power Sources",

issn = "0378-7753",

publisher = "Elsevier B.V.",

number = "2",

}

TY - JOUR

T1 - Electrochemical impedance studies of electrooxidation of methanol and formic acid on Pt/C catalyst in acid medium

AU - Wang, Zhen Bo

AU - Chu, Yuan Yuan

AU - Shao, Ai Fen

AU - Zuo, Peng Jian

AU - Yin, Ge Ping

PY - 2009/5/15

Y1 - 2009/5/15

N2 - Cyclic voltammetry (CV), amperometric i - t experiments, and electrochemical impedance spectroscopy (EIS) measurements were carried out by using glassy carbon disk electrode covered with the Pt/C catalyst powder in solutions of 0.5 mol L-1 H2SO4 containing 0.5 mol L-1 CH3OH and 0.5 mol L-1 H2SO4 containing 0.5 mol L-1 HCOOH at 25 °C, respectively. Electrochemical measurements show that the activity of Pt/C for formic acid electrooxidation is prominently higher than for methanol electrooxidation. EIS information also discloses that the electrooxidation of methanol and formic acid on the Pt/C catalyst at various polarization potentials show different impedance behaviors. The mechanisms and the rate-determining steps of formic acid electrooxidation are also changed with the increase of the potential. Simultaneously, the effects of the electrode potentials on the impedance patterns were revealed.

AB - Cyclic voltammetry (CV), amperometric i - t experiments, and electrochemical impedance spectroscopy (EIS) measurements were carried out by using glassy carbon disk electrode covered with the Pt/C catalyst powder in solutions of 0.5 mol L-1 H2SO4 containing 0.5 mol L-1 CH3OH and 0.5 mol L-1 H2SO4 containing 0.5 mol L-1 HCOOH at 25 °C, respectively. Electrochemical measurements show that the activity of Pt/C for formic acid electrooxidation is prominently higher than for methanol electrooxidation. EIS information also discloses that the electrooxidation of methanol and formic acid on the Pt/C catalyst at various polarization potentials show different impedance behaviors. The mechanisms and the rate-determining steps of formic acid electrooxidation are also changed with the increase of the potential. Simultaneously, the effects of the electrode potentials on the impedance patterns were revealed.

KW - Electrochemical impedance

KW - Formic acid electrooxidation

KW - Methanol electrooxidation

KW - Pt/C catalyst

UR - https://www.scopus.com/pages/publications/65049086328

U2 - 10.1016/j.jpowsour.2009.01.008

DO - 10.1016/j.jpowsour.2009.01.008

M3 - 文章

AN - SCOPUS:65049086328

SN - 0378-7753

VL - 190

SP - 336

EP - 340

JO - Journal of Power Sources

JF - Journal of Power Sources

IS - 2

ER -

Electrochemical impedance studies of electrooxidation of methanol and formic acid on Pt/C catalyst in acid medium

Abstract

UN SDGs

Keywords

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