Analysis of Influence of Cathode Current Collector Wettability on Current Loss By Crossover Evaluation Both at Cathode and Anode Side

The electrochemical performance of La0.65Sr0.3MnO3-type (LSM) anode-supported single cells, produced by alternative production processes, has been investigated at intermediate temperatures. In particular, three different variations of the production route were investigated in more detail: (1) the use of nonground LSM powder for the cathode current collector layer, (2) the use of noncalcined and nonground YSZ powder for the cathode functional layer, and (3) the use of tape casting versus warm pressing as the production process for anode substrates. Results from electrochemical measurements performed between 700 and 900°C with H2 (3vol%H2O) as fuel gas and air as the oxidant showed that performance increased with increasing grain size of the outer cathode current collector layer: the highest performance was achieved with nonground LSM powder. Furthermore, performance was not adversely influenced by the use of noncalcined and nonground YSZ for the cathode functional layer. Also the use of anode substrates with a thickness of about 0.7mm and produced by tape casting, instead of those with a thickness of about 1.5mm and applied by warm pressing, did not detrimentally affect the electrochemical performance of this type of SOFC.

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Characteristics of New Nickel Porous Alloy for Cathode Current Collector in Solid Oxide Fuel Cells

ECS Transactions ◽

10.1149/07801.1681ecst ◽

2017 ◽

Vol 78 (1) ◽

pp. 1681-1688

Author(s):

Chihiro Hiraiwa ◽

Hiromasa Tawarayama ◽

Takahiro Higashino ◽

Kazuki Okuno ◽

Masatoshi Majima

Keyword(s):

Fuel Cells ◽

Solid Oxide Fuel Cells ◽

Current Collector ◽

Solid Oxide ◽

Oxide Fuel ◽

Cathode Current

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Effect of Anode and Cathode Current-Collector Structure on Performance of a Passive Direct Methanol Fuel Cell

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.347-353.3275 ◽

2011 ◽

Vol 347-353 ◽

pp. 3275-3280 ◽

Cited By ~ 1

Author(s):

Xian Qi Cao ◽

Ji Tian Han ◽

Ze Ting Yu ◽

Pei Pei Chen

Keyword(s):

Fuel Cell ◽

Direct Methanol Fuel Cell ◽

Current Collector ◽

Cell Voltage ◽

Methanol Concentration ◽

Membrane Area ◽

Fuel Cell Performance ◽

Direct Methanol ◽

Cathode Current ◽

Methanol Fuel Cell

In this work, the effect of the current-collector structure on the performance of a passive direct methanol fuel cell (DMFC) was investigated. Parallel current-collector (PACC) and other two kinds of perforated current collectors (PECC) were designed, fabricated and tested. The studies were conducted in a passive DMFC with active membrane area of 9 cm2, working at ambient temperature and pressure. Two kinds of methanol solution of 2 M and 4 M were used. Results showed that the PACC as anode current-collector has a positive effect on cell voltage and power. For the cathode current-collector structure, the methanol concentration of 2 M for PECC-2 (higher open ratio 50.27 %) increased performance of DMFC. But the methanol concentration of 4 M led to an enhancement of fuel cell performance that used PACC or PECC-2 as cathode current-collector.

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Long-term stability of Ni–Sn porous metals for cathode current collector in solid oxide fuel cells

International Journal of Hydrogen Energy ◽

10.1016/j.ijhydene.2017.04.007 ◽

2017 ◽

Vol 42 (17) ◽

pp. 12567-12573 ◽

Cited By ~ 2

Author(s):

Chihiro Hiraiwa ◽

Hiromasa Tawarayama ◽

Hajime Ota ◽

Takahiro Higashino ◽

Kazuki Okuno ◽

...

Keyword(s):

Fuel Cells ◽

Solid Oxide Fuel Cells ◽

Current Collector ◽

Solid Oxide ◽

Oxide Fuel ◽

Porous Metals ◽

Term Stability ◽

Long Term Stability ◽

Cathode Current

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Experimental Analysis of PEM Fuel Cells With Biomimetical Mixed Flows as Gas Distributors

ASME 2010 10th Biennial Conference on Engineering Systems Design and Analysis, Volume 1 ◽

10.1115/esda2010-25418 ◽

2010 ◽

Author(s):

C. E. Damian-Ascencio ◽

A. Herna´ndez-Guerrero ◽

A. Alatorre-Ordaz ◽

A. Cuauhtemoc-Rubio ◽

F. Elizalde-Blancas

Keyword(s):

Fuel Cells ◽

Fuel Cell ◽

Current Collector ◽

Natural World ◽

Pem Fuel Cells ◽

Proton Exchange ◽

Cathode Side ◽

Anode Side ◽

Collector Plate ◽

Mixed Flows

A proton exchange membrane fuel cell (PEMFC) is an electrochemical device that converts the chemical energy from the gases into electrical energy. The PEMFCs consist of many parts, and the current collector plate is one of the key components among them. Channels in the bipolar plate distribute air on the cathode side and hydrogen on the anode side. Theoretically a fuel cell produces more current as more fuel is supplied. However the way in which the gases are supplied affects dramatically the performance of the cell. The present paper shows how the mixed flows improve the current density produced by fuel cells. Polarization and power density curves are presented. The results suggest that a flow with two levels of bifurcations is preferred for the anode side. This behavior is expected due to the similitude with the performance of the natural world in which geometries with this type of bifurcations transport the nutrients inside the tree leaves and plants.

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Ni–Al–Cr superalloy as high temperature cathode current collector for advanced thin film Li batteries

RSC Advances ◽

10.1039/c8ra02461h ◽

2018 ◽

Vol 8 (36) ◽

pp. 20304-20313 ◽

Cited By ~ 5

Author(s):

Alejandro N. Filippin ◽

Tzu-Ying Lin ◽

Michael Rawlence ◽

Tanja Zünd ◽

Kostiantyn Kravchyk ◽

...

Keyword(s):

Thin Film ◽

High Temperature ◽

High Voltage ◽

Current Collector ◽

Cathode Current ◽

Li Batteries ◽

Thin Film Li Batteries

A novel cathode current collector based on a Ni–Al–Cr superalloy is presented here. The suitability of this superalloy as a high voltage current collector was verified by crystallizing and cycling of LiCoO2 directly onto it.

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