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description Publicationkeyboard_double_arrow_right Article 2022Publisher:Wiley Authors:Vassili P. Glibin;
Vassili P. Glibin
Vassili P. Glibin in OpenAIREJean‐Pol Dodelet;
Jean‐Pol Dodelet
Jean‐Pol Dodelet in OpenAIREGaixia Zhang;
Gaixia Zhang
Gaixia Zhang in OpenAIREdoi: 10.1002/sus2.94
AbstractWe present here a thermodynamic assessment of the stability behavior in acid environment at 298 and 353 K (80°C) of two iron (II) hexa‐aza‐macrocyclic complexes and of an hexa‐aza‐iron‐based site (FeIIN(4+2)/C) that should potentially be active for the oxygen reduction reaction in proton exchange membrane (PEM) fuel cells. The calculations of the equilibrium constant (Kc) for the demetallation reaction indicate that the iron (II)‐hexa‐aza‐macrocyclic complexes and FeIIN(4+2)/C are chemically stable in an acid medium at 298 and 353 K. Compared with two other potential model sites (FeIIN4/C and FeIIN(2+2)/C) that were thought to be present in the same Fe‐based catalysts, Kc of FeIIN(4+2)/C is two to three orders of magnitude smaller at 353 K, and three to four orders of magnitude smaller at 298 K, than Kc for FeIIN4/C or FeIIN(2+2)/C, revealing the great chemical stability of FeIIN(4+2)/C. In this work, we discuss about a novel proposition that the two catalytic sites active in these Fe‐based catalysts are FeIIN4/C and FeIIN(4+2)/C. This proposition is in agreement with the durability behavior of these catalysts in PEM fuel cells and also with their known physico‐chemical characterizations. The origin of the fast and slow decay behaviors of the different sites, which are active at the Fe–N–C‐based cathode of PEM fuel cells, is also discussed.
add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.euAccess Routesgold 9 citations 9 popularity Top 10% influence Average impulse Top 10% Powered by BIP!
more_vert add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Journal 2011 FrancePublisher:Royal Society of Chemistry (RSC) Authors:Jaouen, Frederic;
Proietti, Eric;Jaouen, Frederic
Jaouen, Frederic in OpenAIRELefevre, Michel;
Lefevre, Michel
Lefevre, Michel in OpenAIREChenitz, Régis;
+5 AuthorsChenitz, Régis
Chenitz, Régis in OpenAIREJaouen, Frederic;
Proietti, Eric;Jaouen, Frederic
Jaouen, Frederic in OpenAIRELefevre, Michel;
Lefevre, Michel
Lefevre, Michel in OpenAIREChenitz, Régis;
Chenitz, Régis
Chenitz, Régis in OpenAIREDodelet, Jean-Pol;
Dodelet, Jean-Pol
Dodelet, Jean-Pol in OpenAIREWu, Gang;
Wu, Gang
Wu, Gang in OpenAIREChung Hoon, Taek;
Johnston, Christina Marie; Zelenay, Piotr;Chung Hoon, Taek
Chung Hoon, Taek in OpenAIREdoi: 10.1039/c0ee00011f
Hydrogen produced from water and renewable energy could fuel a large fleet of proton-exchange-fuel-cell vehicles in the future. However, the dependence on expensive Pt-based electrocatalysts in such fuel cells remains a major obstacle for a widespread deployment of this technology. One solution to overcome this predicament is to reduce the Pt content by a factor of ten by replacing the Pt-based catalysts with non-precious metal catalysts at the oxygen-reducing cathode. Fe- and Co-based electrocatalysts for this reaction have been studied for over 50 years, but they were insufficiently active for the high efficiency and power density needed for transportation fuel cells. Recently, several breakthroughs occurred that have increased the activity and durability of non-precious metal catalysts (NPMCs), which can now be regarded as potential competitors to Pt-based catalysts. This review focuses on the new synthesis methods that have led to these breakthroughs. A modeling analysis is also conducted to analyze the improvements required from NPMC-based cathodes to match the performance of Pt-based cathodes, even at high current density. While no further breakthrough in volume-specific activity of NPMCs is required, incremental improvements of the volume-specific activity and effective protonic conductivity within the fuel-cell cathode are necessary. Regarding durability, NPMCs with the best combination of durability and activity result in ca. 3 times lower fuel cell performance than the most active NPMCs at 0.80 V. Thus, major tasks will be to combine durability with higher activity, and also improve durability at cell voltages greater than 0.60 V.
INRIA a CCSD electro... arrow_drop_down INRIA a CCSD electronic archive serverArticle . 2010Data sources: INRIA a CCSD electronic archive serveradd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1039/c0ee00011f&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu1K citations 1,410 popularity Top 0.1% influence Top 0.1% impulse Top 0.1% Powered by BIP!
more_vert INRIA a CCSD electro... arrow_drop_down INRIA a CCSD electronic archive serverArticle . 2010Data sources: INRIA a CCSD electronic archive serveradd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1039/c0ee00011f&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Journal 2019 FrancePublisher:Royal Society of Chemistry (RSC) Funded by:NSERCNSERCAuthors:Gaixia Zhang;
Xiaohua Yang;Gaixia Zhang
Gaixia Zhang in OpenAIREMarc Dubois;
Michael Herraiz; +7 AuthorsMarc Dubois
Marc Dubois in OpenAIREGaixia Zhang;
Xiaohua Yang;Gaixia Zhang
Gaixia Zhang in OpenAIREMarc Dubois;
Michael Herraiz;Marc Dubois
Marc Dubois in OpenAIRERégis Chenitz;
Régis Chenitz
Régis Chenitz in OpenAIREMichel Lefèvre;
Michel Lefèvre
Michel Lefèvre in OpenAIREMohamed Cherif;
Mohamed Cherif
Mohamed Cherif in OpenAIREFrançois Vidal;
François Vidal
François Vidal in OpenAIREVassili P. Glibin;
Vassili P. Glibin
Vassili P. Glibin in OpenAIREShuhui Sun;
Shuhui Sun
Shuhui Sun in OpenAIREJean-Pol Dodelet;
Jean-Pol Dodelet
Jean-Pol Dodelet in OpenAIREdoi: 10.1039/c9ee00867e
F2-Fluorination of Fe/N/C catalysts poisons FeN4, but not CNx sites. Main causes of instability in PEMFCs are either FeN4 demetalation for Fe/N/C or H2O2 when FeN4 sites are poisoned by fluorination or absent as in MOF_CNx_Ar + NH3.
Hyper Article en Lig... arrow_drop_down Energy & Environmental ScienceArticle . 2019 . Peer-reviewedLicense: Royal Society of Chemistry Licence to PublishData sources: Crossrefadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1039/c9ee00867e&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu71 citations 71 popularity Top 1% influence Top 10% impulse Top 1% Powered by BIP!
more_vert Hyper Article en Lig... arrow_drop_down Energy & Environmental ScienceArticle . 2019 . Peer-reviewedLicense: Royal Society of Chemistry Licence to PublishData sources: Crossrefadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1039/c9ee00867e&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Journal 2021Publisher:Royal Society of Chemistry (RSC) Funded by:NSERCNSERCAuthors:Jean-Pol Dodelet;
Jean-Pol Dodelet
Jean-Pol Dodelet in OpenAIREVassili Glibin;
Vassili Glibin
Vassili Glibin in OpenAIREGaixia Zhang;
Gaixia Zhang
Gaixia Zhang in OpenAIREUlrike I. Kramm;
+4 AuthorsUlrike I. Kramm
Ulrike I. Kramm in OpenAIREJean-Pol Dodelet;
Jean-Pol Dodelet
Jean-Pol Dodelet in OpenAIREVassili Glibin;
Vassili Glibin
Vassili Glibin in OpenAIREGaixia Zhang;
Gaixia Zhang
Gaixia Zhang in OpenAIREUlrike I. Kramm;
Ulrike I. Kramm
Ulrike I. Kramm in OpenAIRERégis Chenitz;
Régis Chenitz
Régis Chenitz in OpenAIREFrançois Vidal;
François Vidal
François Vidal in OpenAIREShuhui Sun;
Shuhui Sun
Shuhui Sun in OpenAIREMarc Dubois;
Marc Dubois
Marc Dubois in OpenAIREdoi: 10.1039/d0ee03431b
The fast decay in PEM fuel cells of a highly active, high performance, but unstable Fe/N/C catalyst like our NC_Ar + NH3 follows a chemical, not an electrochemical, demetallation mechanism for its ORR active FeN4 sites in the catalyst micropores.
Energy & Environment... arrow_drop_down Energy & Environmental ScienceArticle . 2021 . Peer-reviewedLicense: Royal Society of Chemistry Licence to PublishData sources: Crossrefadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1039/d0ee03431b&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu9 citations 9 popularity Top 10% influence Average impulse Top 10% Powered by BIP!
more_vert Energy & Environment... arrow_drop_down Energy & Environmental ScienceArticle . 2021 . Peer-reviewedLicense: Royal Society of Chemistry Licence to PublishData sources: Crossrefadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1039/d0ee03431b&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Journal 2018 CanadaPublisher:Royal Society of Chemistry (RSC) Funded by:DFGDFGAuthors:Régis Chenitz;
Régis Chenitz
Régis Chenitz in OpenAIREUlrike I. Kramm;
Michel Lefèvre;Ulrike I. Kramm
Ulrike I. Kramm in OpenAIREVassili Glibin;
+3 AuthorsVassili Glibin
Vassili Glibin in OpenAIRERégis Chenitz;
Régis Chenitz
Régis Chenitz in OpenAIREUlrike I. Kramm;
Michel Lefèvre;Ulrike I. Kramm
Ulrike I. Kramm in OpenAIREVassili Glibin;
Vassili Glibin
Vassili Glibin in OpenAIREGaixia Zhang;
Gaixia Zhang
Gaixia Zhang in OpenAIREShuhui Sun;
Shuhui Sun
Shuhui Sun in OpenAIREJean-Pol Dodelet;
Jean-Pol Dodelet
Jean-Pol Dodelet in OpenAIREdoi: 10.1039/c7ee02302b
Micropores are largely responsible for Fe/N/C catalytic activity, but are also intrinsically responsible for the rapid initial performance loss in PEMFC.
Energy & Environment... arrow_drop_down Energy & Environmental ScienceArticle . 2018 . Peer-reviewedLicense: Royal Society of Chemistry Licence to PublishData sources: Crossrefadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1039/c7ee02302b&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu220 citations 220 popularity Top 1% influence Top 10% impulse Top 0.1% Powered by BIP!
more_vert Energy & Environment... arrow_drop_down Energy & Environmental ScienceArticle . 2018 . Peer-reviewedLicense: Royal Society of Chemistry Licence to PublishData sources: Crossrefadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1039/c7ee02302b&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu