scholarly journals Evaluation on Thermo-Electrical Characteristics of Sio2 Nanofluids for Fuel Cell Cooling Application in Automobiles

2018 ◽  
Vol 7 (3.17) ◽  
pp. 137
Author(s):  
Suleiman Akilu ◽  
Aklilu Tesfamichael Baheta ◽  
K V. Sharma
Keyword(s):  
Fuel Cell ◽  
Ethylene Glycol ◽  
Proton Exchange Membrane ◽  
Membrane System ◽  
Proton Exchange ◽  
Electrical Performance ◽  
Particle Volume ◽  
System A ◽  
Critical Requirement ◽  
Exchange Membrane

Effective thermal management is critical requirement in fuel cell technologies to avoid the performance degradation during operation. Nanofluids offer the potential to address this cooling challenge in fuel cells better than pure fluids. However, due to the electrochemical changes associated with the proton exchange membrane system, a strict limit on thermal and electrical properties of coolant needs to comply. In this study, the thermal and electrical conductivities of silicon dioxide (SiO2) dispersion of ethylene glycol (EG), glycerol (G), and 40:60 by mass ethylene glycol-glycerol (EG/G) was investigated experimentally. Measurements were carried for particle volume concentrations of 0.25–2.0% at a temperature of 30 °C. The thermal and electrical conductivity of the nanofluids significantly increases with SiO2 loading. Maximum enhancements of ∼4.0% and ∼198% at a volume concentration of 2.0% were obtained with SiO2-EG/G, respectively. Further, analysis of the results reveals that SiO2/G exhibited the greatest thermo-electrical performance, followed by SiO2-EG/G and EG. Therefore, SiO2-EG/G nanofluid is best-suited coolant for PEM fuel cell thermal applications.  

Platinum degradation mechanisms in proton exchange membrane fuel cell (PEMFC) system: A review

2021 ◽  
Author(s):  
Paul C. Okonkwo ◽  
Oladeji O. Ige ◽  
El Manaa Barhoumi ◽  
Paul C. Uzoma ◽  
Wilfred Emori ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Proton Exchange Membrane ◽  
Proton Exchange ◽  
Degradation Mechanisms ◽  
System A ◽  
Exchange Membrane

A novel cogeneration system: A proton exchange membrane fuel cell coupled to a heat transformer

2013 ◽  
Vol 50 (2) ◽  
pp. 1530-1535 ◽  
Author(s):  
A. Huicochea ◽  
R.J. Romero ◽  
W. Rivera ◽  
G. Gutierrez-Urueta ◽  
J. Siqueiros ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Proton Exchange Membrane ◽  
Proton Exchange ◽  
System A ◽  
Cogeneration System ◽  
Exchange Membrane ◽  
Heat Transformer

Novel-SiO2-Doped Proton Exchange Membrane for Self-Humidifying Fuel Cell

2007 ◽  
Vol 336-338 ◽  
pp. 537-540
Author(s):  
Cheng Wang ◽  
Nian Fang Wan ◽  
Zong Qiang Mao ◽  
Jing Ming Xu
Keyword(s):  
Fuel Cell ◽  
Composite Membrane ◽  
Proton Exchange Membrane ◽  
Sol Gel ◽  
Chemical Properties ◽  
Proton Exchange ◽  
Nano Sio2 ◽  
System A ◽  
Physico Chemical ◽  
Exchange Membrane

To retain the optimum hydration level of the proton exchange membrane fuel cell (PEMFC) without humidification sub-system, a novel self-humidifying composite membrane was fabricated by the technology of Si[OCH2CH3]4 in situ sol-gel reaction in a commercial Nafion 112 membrane. The physico-chemical properties of the membrane were studied by means of AFM, SEM and AC impedance. These results showed that the nano-SiO2 reactant was uniformly distributed in the composite membrane. It was found that the proton conductivity increased observably by dispersing 3 wt % nano-SiO2 in the composite membrane at low water content, and the SiO2/Nafion composite membrane improved the self-humidifying performance of PEMFC.

Performance of Proton Exchange Membrane in the Presence of Mg2+

2014 ◽  
Vol 11 (4) ◽  
Author(s):  
Guo Li ◽  
Jinzhu Tan ◽  
Jianming Gong ◽  
Xiaowei Zhang ◽  
Yanchao Xin ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Carbon Dioxide Emissions ◽  
Proton Exchange Membrane ◽  
Pem Fuel Cell ◽  
Proton Exchange ◽  
Cell Performance ◽  
Electrical Performance ◽  
Fuel Cell Performance ◽  
Exchange Membrane

Proton exchange membrane (PEM) fuel cell is regarded as one of the potential renewable energy which may provide a possible long-term solution to reduce carbon dioxide emissions, reduce fossil fuel dependency and increase energy efficiency. Even though great progress has been made, long-term stability and durability is still an issue. The contamination ion plays an important role on the electrical performance of PEM fuel cell. This paper investigates the effect of Mg2+ contamination on PEM fuel cell performance as a function of Mg2+ concentration. Two levels of Mg2+ concentration was chose. From the experimental results, it can be obtained that a significant drop in fuel cell performance occurred when Mg2+ was injected into the anode fuel stream. The voltage and power density of fuel cell decreased larger and larger with increase of Mg2+ concentration over time. The Mg2+ mainly caused the concentration polarization loss from the anode catalyst to the membrane in fuel cell.

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