H2 + O2 recombination in non-isothermal, non-adiabatic electrochemical calorimetry of water electrolysis in an undivided cell

V. J. Cunnane; R. A. Scannell; D. J. Schiffrin

doi:10.1016/0022-0728(89)80110-X

H₂ + O₂ recombination in non-isothermal, non-adiabatic electrochemical calorimetry of water electrolysis in an undivided cell

V. J. Cunnane, R. A. Scannell, D. J. Schiffrin

University of Southampton

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

17 Citations (Scopus)

Abstract

The heat effects due to recombination of H ₂ + O₂ in the electrochemical calorimetry of water electrolysis have been studied. It is shown that great care has to be taken in the use of Dewar calorimeters for this application, due to their non-linear response, as Stefans' law is obeyed. It is shown that little recombination can be observed in the electrolysis of water with Pt electrodes at current densities greater than 30 mA cm^-2. It is concluded that the local decrease in the oxygen and hydrogen concentration close to the cathode and anode respectively due to the sparging of the solution adjacent to the electrodes is responsible for the low deviations observed from the thermal effects predicted for a 100% efficiency of electrolytic water decomposition.

Original language	English
Pages (from-to)	163-174
Number of pages	12
Journal	Journal of Electroanalytical Chemistry
Volume	269
Issue number	1
DOIs	https://doi.org/10.1016/0022-0728(89)80110-X
Publication status	Published - 8 Sep 1989

Access to Document

10.1016/0022-0728(89)80110-X

Cite this

@article{a3745788b5644aa3a6408cc261aa650a,

title = "H2 + O2 recombination in non-isothermal, non-adiabatic electrochemical calorimetry of water electrolysis in an undivided cell",

abstract = "The heat effects due to recombination of H 2 + O2 in the electrochemical calorimetry of water electrolysis have been studied. It is shown that great care has to be taken in the use of Dewar calorimeters for this application, due to their non-linear response, as Stefans' law is obeyed. It is shown that little recombination can be observed in the electrolysis of water with Pt electrodes at current densities greater than 30 mA cm-2. It is concluded that the local decrease in the oxygen and hydrogen concentration close to the cathode and anode respectively due to the sparging of the solution adjacent to the electrodes is responsible for the low deviations observed from the thermal effects predicted for a 100% efficiency of electrolytic water decomposition.",

author = "Cunnane, {V. J.} and Scannell, {R. A.} and Schiffrin, {D. J.}",

year = "1989",

month = sep,

day = "8",

doi = "10.1016/0022-0728(89)80110-X",

language = "English",

volume = "269",

pages = "163--174",

journal = "Journal of Electroanalytical Chemistry",

issn = "0022-0728",

publisher = "Elsevier BV",

number = "1",

}

TY - JOUR

T1 - H2 + O2 recombination in non-isothermal, non-adiabatic electrochemical calorimetry of water electrolysis in an undivided cell

AU - Cunnane, V. J.

AU - Scannell, R. A.

AU - Schiffrin, D. J.

PY - 1989/9/8

Y1 - 1989/9/8

N2 - The heat effects due to recombination of H 2 + O2 in the electrochemical calorimetry of water electrolysis have been studied. It is shown that great care has to be taken in the use of Dewar calorimeters for this application, due to their non-linear response, as Stefans' law is obeyed. It is shown that little recombination can be observed in the electrolysis of water with Pt electrodes at current densities greater than 30 mA cm-2. It is concluded that the local decrease in the oxygen and hydrogen concentration close to the cathode and anode respectively due to the sparging of the solution adjacent to the electrodes is responsible for the low deviations observed from the thermal effects predicted for a 100% efficiency of electrolytic water decomposition.

AB - The heat effects due to recombination of H 2 + O2 in the electrochemical calorimetry of water electrolysis have been studied. It is shown that great care has to be taken in the use of Dewar calorimeters for this application, due to their non-linear response, as Stefans' law is obeyed. It is shown that little recombination can be observed in the electrolysis of water with Pt electrodes at current densities greater than 30 mA cm-2. It is concluded that the local decrease in the oxygen and hydrogen concentration close to the cathode and anode respectively due to the sparging of the solution adjacent to the electrodes is responsible for the low deviations observed from the thermal effects predicted for a 100% efficiency of electrolytic water decomposition.

UR - http://www.scopus.com/inward/record.url?scp=36849058303&partnerID=8YFLogxK

U2 - 10.1016/0022-0728(89)80110-X

DO - 10.1016/0022-0728(89)80110-X

M3 - Article

AN - SCOPUS:36849058303

SN - 0022-0728

VL - 269

SP - 163

EP - 174

JO - Journal of Electroanalytical Chemistry

JF - Journal of Electroanalytical Chemistry

IS - 1

ER -

H₂ + O₂ recombination in non-isothermal, non-adiabatic electrochemical calorimetry of water electrolysis in an undivided cell

Abstract

Access to Document

Other files and links

Fingerprint

Cite this