Details
| Original language | English |
|---|---|
| Pages (from-to) | 582-588 |
| Number of pages | 7 |
| Journal | Electrochimica acta |
| Volume | 260 |
| Early online date | 13 Dec 2017 |
| Publication status | Published - 10 Jan 2018 |
Abstract
Within this contribution an experimental analysis of a 50cm long single-channel polymer electrolyte membrane water electrolysis cell is presented. The current density and the temperature distribution along the channel coordinate is measured with a printed circuit board setup that enables a very fine resolution of 252 independent measurement segments. After first cell testings in a steady state mode, effects of changed amounts of feed water flux on the cell voltage, the distribution of current density and the temperature profile were investigated. Although the water feed did not significantly influence the current density distribution over a wide range of water fluxes, very low water fluxes lead to a massive drop in the current density in the rear part of the active area and a moderate increase at the inlet. This growing heterogeneity influenced the temperature distribution as well as the cell voltage.
Keywords
- Current density distribution, PEM water electrolysis, Scale-up, Single-channel cell, Temperature distribution, Water flux reduction
ASJC Scopus subject areas
- Chemical Engineering(all)
- Chemistry(all)
- Electrochemistry
Cite this
- Standard
- Harvard
- Apa
- Vancouver
- BibTeX
- RIS
In: Electrochimica acta, Vol. 260, 10.01.2018, p. 582-588.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Experimental characterization of inhomogeneity in current density and temperature distribution along a single-channel PEM water electrolysis cell
AU - Immerz, Christoph
AU - Schweins, M.
AU - Trinke, Patrick
AU - Bensmann, Boris
AU - Paidar, M.
AU - Bystroň, T.
AU - Bouzek, K.
AU - Hanke-Rauschenbach, Richard
N1 - © 2017 Elsevier Ltd. All rights reserved.
PY - 2018/1/10
Y1 - 2018/1/10
N2 - Within this contribution an experimental analysis of a 50cm long single-channel polymer electrolyte membrane water electrolysis cell is presented. The current density and the temperature distribution along the channel coordinate is measured with a printed circuit board setup that enables a very fine resolution of 252 independent measurement segments. After first cell testings in a steady state mode, effects of changed amounts of feed water flux on the cell voltage, the distribution of current density and the temperature profile were investigated. Although the water feed did not significantly influence the current density distribution over a wide range of water fluxes, very low water fluxes lead to a massive drop in the current density in the rear part of the active area and a moderate increase at the inlet. This growing heterogeneity influenced the temperature distribution as well as the cell voltage.
AB - Within this contribution an experimental analysis of a 50cm long single-channel polymer electrolyte membrane water electrolysis cell is presented. The current density and the temperature distribution along the channel coordinate is measured with a printed circuit board setup that enables a very fine resolution of 252 independent measurement segments. After first cell testings in a steady state mode, effects of changed amounts of feed water flux on the cell voltage, the distribution of current density and the temperature profile were investigated. Although the water feed did not significantly influence the current density distribution over a wide range of water fluxes, very low water fluxes lead to a massive drop in the current density in the rear part of the active area and a moderate increase at the inlet. This growing heterogeneity influenced the temperature distribution as well as the cell voltage.
KW - Current density distribution
KW - PEM water electrolysis
KW - Scale-up
KW - Single-channel cell
KW - Temperature distribution
KW - Water flux reduction
UR - http://www.scopus.com/inward/record.url?scp=85038818866&partnerID=8YFLogxK
U2 - 10.1016/j.electacta.2017.12.087
DO - 10.1016/j.electacta.2017.12.087
M3 - Article
AN - SCOPUS:85038818866
VL - 260
SP - 582
EP - 588
JO - Electrochimica acta
JF - Electrochimica acta
SN - 0013-4686
ER -