Details
| Original language | English |
|---|---|
| Pages (from-to) | 7790-7794 |
| Number of pages | 5 |
| Journal | Angewandte Chemie - International Edition |
| Volume | 54 |
| Issue number | 27 |
| Publication status | Published - 24 Jun 2015 |
Abstract
A short-circuited PEM fuel cell with a Nafion membrane has been evaluated in the roomerature separation of hydrogen from exhaust gas streams. The separated hydrogen can be recovered or consumed in an in situ olefin hydrogenation when the fuel cell is operated as catalytic membrane reactor. Without applying an outer electrical voltage, there is a continuous hydrogen flux from the higher to the lower hydrogen partial pressure side through the Nafion membrane. On the feed side of the Nafion membrane, hydrogen is catalytically split into protons and electrons by the Pt/C electrocatalyst. The protons diffuse through the Nafion membrane, the electrons follow the short-circuit between the two brass current collectors. On the cathode side, protons and electrons recombine, and hydrogen is released. Fuel cell turned on its head: A short-circuited PEM fuel cell with a Nafion membrane can separate hydrogen from exhaust gases of different compositions at room temperature. The permeated hydrogen can either be obtained using an inert flushing gas or used directly in catalytic hydrogenations or combustion processes with reactive flushing gases.
Keywords
- electrocatalysis, fuel cells, hydrogen, membrane, separation
ASJC Scopus subject areas
- Chemical Engineering(all)
- Catalysis
- Chemistry(all)
- General Chemistry
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In: Angewandte Chemie - International Edition, Vol. 54, No. 27, 24.06.2015, p. 7790-7794.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Inverted Fuel Cell
T2 - Room-Temperature Hydrogen Separation from an Exhaust Gas by Using a Commercial Short-Circuited PEM Fuel Cell without Applying any Electrical Voltage
AU - Friebe, Sebastian
AU - Geppert, Benjamin
AU - Caro, Jürgen
PY - 2015/6/24
Y1 - 2015/6/24
N2 - A short-circuited PEM fuel cell with a Nafion membrane has been evaluated in the roomerature separation of hydrogen from exhaust gas streams. The separated hydrogen can be recovered or consumed in an in situ olefin hydrogenation when the fuel cell is operated as catalytic membrane reactor. Without applying an outer electrical voltage, there is a continuous hydrogen flux from the higher to the lower hydrogen partial pressure side through the Nafion membrane. On the feed side of the Nafion membrane, hydrogen is catalytically split into protons and electrons by the Pt/C electrocatalyst. The protons diffuse through the Nafion membrane, the electrons follow the short-circuit between the two brass current collectors. On the cathode side, protons and electrons recombine, and hydrogen is released. Fuel cell turned on its head: A short-circuited PEM fuel cell with a Nafion membrane can separate hydrogen from exhaust gases of different compositions at room temperature. The permeated hydrogen can either be obtained using an inert flushing gas or used directly in catalytic hydrogenations or combustion processes with reactive flushing gases.
AB - A short-circuited PEM fuel cell with a Nafion membrane has been evaluated in the roomerature separation of hydrogen from exhaust gas streams. The separated hydrogen can be recovered or consumed in an in situ olefin hydrogenation when the fuel cell is operated as catalytic membrane reactor. Without applying an outer electrical voltage, there is a continuous hydrogen flux from the higher to the lower hydrogen partial pressure side through the Nafion membrane. On the feed side of the Nafion membrane, hydrogen is catalytically split into protons and electrons by the Pt/C electrocatalyst. The protons diffuse through the Nafion membrane, the electrons follow the short-circuit between the two brass current collectors. On the cathode side, protons and electrons recombine, and hydrogen is released. Fuel cell turned on its head: A short-circuited PEM fuel cell with a Nafion membrane can separate hydrogen from exhaust gases of different compositions at room temperature. The permeated hydrogen can either be obtained using an inert flushing gas or used directly in catalytic hydrogenations or combustion processes with reactive flushing gases.
KW - electrocatalysis
KW - fuel cells
KW - hydrogen
KW - membrane
KW - separation
UR - http://www.scopus.com/inward/record.url?scp=85027945082&partnerID=8YFLogxK
U2 - 10.1002/anie.201500751
DO - 10.1002/anie.201500751
M3 - Article
AN - SCOPUS:85027945082
VL - 54
SP - 7790
EP - 7794
JO - Angewandte Chemie - International Edition
JF - Angewandte Chemie - International Edition
SN - 1433-7851
IS - 27
ER -