DataVXACS Materials LettersPaper
journal article·2024-10-07Open access

High-Performance Titanium Nitride Structural Coatings for Corrosion Protection of Aluminum-Based Proton Exchange Membrane Fuel Cells

Felipe C. Silva, Oscar M. Prada Ramirez, Julio C. Sagás, Luis C. Fontana, Hercilio G. de Melo, Cláudio G. Schön, Matheus A. Tunes

ACS Materials Letters· Volume 6· Issue 10
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Source abstract

Abstract

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.
Source: openalex_inverted_index · Quality: baseline

Research context

Metals & alloysMaterials processing

OpenAlex topics: Fuel Cells and Related Materials · Electrocatalysts for Energy Conversion · MXene and MAX Phase Materials

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Universidade de São Paulo, Escola Politécnica, Departamento de Engenharia Metalúrgica e de Materiais, Av. Prof. Mello Moraes, 2463, 05508-900 São Paulo-SP, Brazil

CEETEPS, State Center of Technological Education Paula Souza, Faculty of Technology, Department of Production Management, Campus Cotia, Rua Nelson Raineri, 700, 06702-155 Cotia-SP, Brazil

CEETEPS, State Center of Technological Education Paula Souza, Faculty of Technology, Department of Mechanical Manufacturing, Campus São Paulo, Av. Tiradentes, 615, 01124-060 São Paulo-SP, Brazil

Laboratory of Plasmas, Films and Surfaces, Universidade do Estado de Santa Catarina, Rua Paulo Malschitzki, 200 − Zona Industrial Norte, 89219-710 Joinville-SC, Brazil

Department of Metallurgy, Chair of Non-Ferrous Metallurgy, Montanuniversität Leoben, Franz-Josef-Straße 18, 8700 Leoben, Austria

Funding

Los Alamos National Laboratory · Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico · Funda??o de Amparo ? Pesquisa e Inova??o do Estado de Santa Catarina · Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior

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