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Title: Formation of Protective Nitride Surfaces for PEM Fuel Cell Metallic Bipolar Plates

Abstract

Selective gas nitridation of model Ni-base alloys was used to form dense, electrically-conductive and corrosion-resistant nitride surface layers, including TiN, VN, CrN, Cr2N, as well as a complex NiNbVN phase. Evaluation for use as a protective surface for metallic bipolar plates in proton exchange membrane fuel cells (PEMFC) indicated that CrN/Cr2N base surfaces hold promise to meet Department of Energy (DOE) performance goals for automotive applications. The thermally grown CrN/Cr2N surface formed on model Ni-Cr base alloys exhibited good stability and low electrical resistance in single-cell fuel cell testing under simulated drive-cycle conditions. Recent results indicate that similar protective Cr-nitride surfaces can be formed on less expensive Fe-Cr base alloys potentially capable of meeting DOE cost goals.

Authors:
 [1];  [1];  [2];  [2];  [1];  [3];  [3]
  1. ORNL
  2. National Renewable Energy Laboratory (NREL)
  3. Los Alamos National Laboratory (LANL)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); High Temperature Materials Laboratory; Shared Research Equipment Collaborative Research Center
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
OSTI Identifier:
1003560
DOE Contract Number:
DE-AC05-00OR22725
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of the Minerals Metals & Materials Society (JOM); Journal Volume: 58; Journal Issue: 8
Country of Publication:
United States
Language:
English
Subject:
30 DIRECT ENERGY CONVERSION; ALLOYS; ELECTRIC CONDUCTIVITY; EVALUATION; FUEL CELLS; NITRIDATION; NITRIDES; PERFORMANCE; PLATES; PROTON EXCHANGE MEMBRANE FUEL CELLS; STABILITY; TESTING; fuel cell; coating; bipolar plate; nitride; corrosion

Citation Formats

Brady, Michael P, Yang, Bing, Wang, Heli, Turner, John, More, Karren Leslie, Wilson, Mahlon, and Garzon, Fernando. Formation of Protective Nitride Surfaces for PEM Fuel Cell Metallic Bipolar Plates. United States: N. p., 2006. Web. doi:10.1007/s11837-006-0054-4.
Brady, Michael P, Yang, Bing, Wang, Heli, Turner, John, More, Karren Leslie, Wilson, Mahlon, & Garzon, Fernando. Formation of Protective Nitride Surfaces for PEM Fuel Cell Metallic Bipolar Plates. United States. doi:10.1007/s11837-006-0054-4.
Brady, Michael P, Yang, Bing, Wang, Heli, Turner, John, More, Karren Leslie, Wilson, Mahlon, and Garzon, Fernando. Sun . "Formation of Protective Nitride Surfaces for PEM Fuel Cell Metallic Bipolar Plates". United States. doi:10.1007/s11837-006-0054-4.
@article{osti_1003560,
title = {Formation of Protective Nitride Surfaces for PEM Fuel Cell Metallic Bipolar Plates},
author = {Brady, Michael P and Yang, Bing and Wang, Heli and Turner, John and More, Karren Leslie and Wilson, Mahlon and Garzon, Fernando},
abstractNote = {Selective gas nitridation of model Ni-base alloys was used to form dense, electrically-conductive and corrosion-resistant nitride surface layers, including TiN, VN, CrN, Cr2N, as well as a complex NiNbVN phase. Evaluation for use as a protective surface for metallic bipolar plates in proton exchange membrane fuel cells (PEMFC) indicated that CrN/Cr2N base surfaces hold promise to meet Department of Energy (DOE) performance goals for automotive applications. The thermally grown CrN/Cr2N surface formed on model Ni-Cr base alloys exhibited good stability and low electrical resistance in single-cell fuel cell testing under simulated drive-cycle conditions. Recent results indicate that similar protective Cr-nitride surfaces can be formed on less expensive Fe-Cr base alloys potentially capable of meeting DOE cost goals.},
doi = {10.1007/s11837-006-0054-4},
journal = {Journal of the Minerals Metals & Materials Society (JOM)},
number = 8,
volume = 58,
place = {United States},
year = {Sun Jan 01 00:00:00 EST 2006},
month = {Sun Jan 01 00:00:00 EST 2006}
}