TY - JOUR
T1 - High-Performance Titanium Nitride Structural Coatings for Corrosion Protection of Aluminum-Based Proton Exchange Membrane Fuel Cells
AU - Silva, Felipe C.
AU - Ramirez, Oscar M. Prada
AU - Sagás, Julio C.
AU - Fontana, Luis Cesar
AU - Melo, Hercilio G. de
AU - Schön, Cláudio Geraldo
AU - Tunes, Matheus Araujo
N1 - Publisher Copyright: © 2024 American Chemical Society
PY - 2024/9/3
Y1 - 2024/9/3
N2 - Electrification of vehicles is the key to reduce greenhouse gas emissions to meet new energy policies. New energy sources such as proton exchange membrane fuel cells (PEMFCs) have arisen as one of the most sustainable solutions. Their performance depends on the choice of materials, such as bipolar plates (BPPs). Reduction in weight, volume, and costs are of paramount importance to enable commercialization and popularization of PEMFCs. In this context, aluminum emerges as a promising candidate for BPPs, although its corrosion resistance is inadequate for the harsh environment of PEMFCs. Recently, titanium nitride (TiN) coatings have shown potential to increase the corrosion resistance of aluminum BPPs. Herein, we discovered that the performance of the aluminum-TiN functional system in a simulated PEMFC environment can be tailored by synthesis parameters. Electrochemical tests in combination with transmission electron microscopy indicate that optimal deposition settings can significantly improve the corrosion resistance by creating denser and defect-free film microstructures.
AB - Electrification of vehicles is the key to reduce greenhouse gas emissions to meet new energy policies. New energy sources such as proton exchange membrane fuel cells (PEMFCs) have arisen as one of the most sustainable solutions. Their performance depends on the choice of materials, such as bipolar plates (BPPs). Reduction in weight, volume, and costs are of paramount importance to enable commercialization and popularization of PEMFCs. In this context, aluminum emerges as a promising candidate for BPPs, although its corrosion resistance is inadequate for the harsh environment of PEMFCs. Recently, titanium nitride (TiN) coatings have shown potential to increase the corrosion resistance of aluminum BPPs. Herein, we discovered that the performance of the aluminum-TiN functional system in a simulated PEMFC environment can be tailored by synthesis parameters. Electrochemical tests in combination with transmission electron microscopy indicate that optimal deposition settings can significantly improve the corrosion resistance by creating denser and defect-free film microstructures.
UR - https://doi.org/10.1021/acsmaterialslett.4c01303
UR - http://www.scopus.com/inward/record.url?scp=85203004881&partnerID=8YFLogxK
U2 - 10.1021/acsmaterialslett.4c01303
DO - 10.1021/acsmaterialslett.4c01303
M3 - Article
SN - 2639-4979
VL - 6.2024
SP - 4564
EP - 4570
JO - ACS materials letters
JF - ACS materials letters
IS - ??? Stand: 30. September 2024
ER -