Catalytic activity of NiO cathode in molten carbonate fuel cells

Kamil Czelej , Karol Ćwieka , Juan Carlos Colmenares , Krzysztof Kurzydłowski

Abstract

Molten carbonate fuel cells (MCFCs) have attracted significant attention because of their potential contribution to the development of a sustainable and clean-energy society. MCFC performance is governed by cathodic transformation of carbon dioxide to carbonate anion in complex: gas – molten carbonate – solid surface system. Based on our recently proposed reaction mechanism together with the density functional theory (DFT) calculated activation barriers we created a simplified microkinetic model to predict the catalytic activity of the NiO cathode. Under the MCFC operation condition the cathode surface in close proximity to the triple phase boundary (TPB) is highly active towards electro-reduction of oxygen and simultaneous formation of carbonate anion. Our results explain why, despite a great effort devoted to modify the chemical composition of the cathode, a substantial increase in the MCFC performance has not been observed, and the in-situ oxidized nickel remains state-of-the-art cathode material.
Author Kamil Czelej (FMSE / DMD)
Kamil Czelej,,
- Division of Materials Design
, Karol Ćwieka (FMSE / DMD)
Karol Ćwieka,,
- Division of Materials Design
, Juan Carlos Colmenares - Institute of Physical Chemistry Polish Academy of Sciences (IChF PAN) [Polska Akademia Nauk (PAN)]
Juan Carlos Colmenares,,
-
, Krzysztof Kurzydłowski (FMSE / DMD)
Krzysztof Kurzydłowski,,
- Division of Materials Design
Journal seriesApplied Catalysis B: Environmental, ISSN 0926-3373, (A 45 pkt)
Issue year2018
Vol222
Pages73-75
Publication size in sheets0.3
Keywords in EnglishNiO; cathode; MCFC; Sabatier analysis
ASJC Classification1508 Process Chemistry and Technology; 2300 General Environmental Science; 1503 Catalysis
DOIDOI:10.1016/j.apcatb.2017.10.003
URL http://www.sciencedirect.com/science/article/pii/S0926337317309153
Languageen angielski
File
15_APB_2018.pdf 326.36 KB
Score (nominal)45
ScoreMinisterial score = 45.0, 23-09-2019, ArticleFromJournal
Publication indicators WoS Citations = 6; Scopus SNIP (Source Normalised Impact per Paper): 2016 = 2.12; WoS Impact Factor: 2017 = 11.698 (2) - 2017=10.212 (5)
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* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.
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