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Title: Polybenzimidazole (PBI) functionalized nanographene as highly stable catalyst support for polymer Electrolyte membrane fuel cells (PEMFCs)

Abstract

Nanoscale graphenes were used as cathode catalyst supports in proton exchange membrane fuel cells (PEMFCs). Surface-initiated polymerization that covalently bonds polybenzimidazole (PBI) polymer on the surface of graphene supports enables the uniform distribution of the Pt nanoparticles, as well as allows the sealing of the unterminated carbon bonds usually present on the edge of graphene from the chemical reduction of graphene oxide. The nanographene effectively shortens the length of channels and pores for O2 diffusion/water dissipation and significantly increases the primary pore volume. Further addition of p-phenyl sulfonic functional graphitic carbon particles as spacers, increases the specific volume of the secondary pores and greatly improves O2 mass transport within the catalyst layers. The developed composite cathode catalyst of Pt/PBI-nanographene (50 wt%) + SO3H-graphitic carbon black demonstrates a higher beginning of life (BOL) PEMFC performance as compared to both Pt/PBI-nanographene (50 wt%) and Pt/PBI-graphene (50 wt%) + SO3H-graphitic carbon black (GCB). Accelerated stress tests show excellent support durability compared to that of traditional Pt/Vulcan XC72 catalysts, when subjected to 10,000 cycles from 1.0 V to 1.5 V. As a result, this study suggests the promise of using PBI-nanographene + SO3H-GCB hybrid supports in fuel cells to achieve the 2020 DOE targetsmore » for transportation applications.« less

Authors:
 [1];  [2];  [3];  [4];  [5];  [5];  [4];  [3];  [1]
  1. Indiana Univ.-Purdue Univ. Indianapolis, Indianapolis, IN (United States)
  2. Indiana Univ.-Purdue Univ. Indianapolis, Indianapolis, IN (United States); Purdue Univ., West Lafayette, IN (United States)
  3. Iowa State Univ., Ames, IA (United States)
  4. Purdue Univ., West Lafayette, IN (United States)
  5. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Transportation Office. Fuel Cell Technologies Office
OSTI Identifier:
1344363
Report Number(s):
LA-UR-16-24680
Journal ID: ISSN 0013-4651
Grant/Contract Number:  
AC52-06NA25396
Resource Type:
Accepted Manuscript
Journal Name:
Journal of the Electrochemical Society
Additional Journal Information:
Journal Volume: 163; Journal Issue: 10; Journal ID: ISSN 0013-4651
Publisher:
The Electrochemical Society
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 30 DIRECT ENERGY CONVERSION; energy Sciences; fuel cell; nanographene; graphene supports; mercury porosimetry; PEMFCs; polybenzimidazole polymer; support durability; surface functionalization

Citation Formats

Xin, Le, Yang, Fan, Qiu, Yang, Uzunoglu, Aytekin, Rockward, Tommy, Borup, Rodney L., Stanciu, Lia A., Li, Wenzhen, and Xie, Jian. Polybenzimidazole (PBI) functionalized nanographene as highly stable catalyst support for polymer Electrolyte membrane fuel cells (PEMFCs). United States: N. p., 2016. Web. https://doi.org/10.1149/2.0921610jes.
Xin, Le, Yang, Fan, Qiu, Yang, Uzunoglu, Aytekin, Rockward, Tommy, Borup, Rodney L., Stanciu, Lia A., Li, Wenzhen, & Xie, Jian. Polybenzimidazole (PBI) functionalized nanographene as highly stable catalyst support for polymer Electrolyte membrane fuel cells (PEMFCs). United States. https://doi.org/10.1149/2.0921610jes
Xin, Le, Yang, Fan, Qiu, Yang, Uzunoglu, Aytekin, Rockward, Tommy, Borup, Rodney L., Stanciu, Lia A., Li, Wenzhen, and Xie, Jian. Thu . "Polybenzimidazole (PBI) functionalized nanographene as highly stable catalyst support for polymer Electrolyte membrane fuel cells (PEMFCs)". United States. https://doi.org/10.1149/2.0921610jes. https://www.osti.gov/servlets/purl/1344363.
@article{osti_1344363,
title = {Polybenzimidazole (PBI) functionalized nanographene as highly stable catalyst support for polymer Electrolyte membrane fuel cells (PEMFCs)},
author = {Xin, Le and Yang, Fan and Qiu, Yang and Uzunoglu, Aytekin and Rockward, Tommy and Borup, Rodney L. and Stanciu, Lia A. and Li, Wenzhen and Xie, Jian},
abstractNote = {Nanoscale graphenes were used as cathode catalyst supports in proton exchange membrane fuel cells (PEMFCs). Surface-initiated polymerization that covalently bonds polybenzimidazole (PBI) polymer on the surface of graphene supports enables the uniform distribution of the Pt nanoparticles, as well as allows the sealing of the unterminated carbon bonds usually present on the edge of graphene from the chemical reduction of graphene oxide. The nanographene effectively shortens the length of channels and pores for O2 diffusion/water dissipation and significantly increases the primary pore volume. Further addition of p-phenyl sulfonic functional graphitic carbon particles as spacers, increases the specific volume of the secondary pores and greatly improves O2 mass transport within the catalyst layers. The developed composite cathode catalyst of Pt/PBI-nanographene (50 wt%) + SO3H-graphitic carbon black demonstrates a higher beginning of life (BOL) PEMFC performance as compared to both Pt/PBI-nanographene (50 wt%) and Pt/PBI-graphene (50 wt%) + SO3H-graphitic carbon black (GCB). Accelerated stress tests show excellent support durability compared to that of traditional Pt/Vulcan XC72 catalysts, when subjected to 10,000 cycles from 1.0 V to 1.5 V. As a result, this study suggests the promise of using PBI-nanographene + SO3H-GCB hybrid supports in fuel cells to achieve the 2020 DOE targets for transportation applications.},
doi = {10.1149/2.0921610jes},
journal = {Journal of the Electrochemical Society},
number = 10,
volume = 163,
place = {United States},
year = {2016},
month = {8}
}

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