Insights into Proton Recombination in Ceramic Proton Conducting Electrodes
Insights into Proton Recombination in Ceramic Proton Conducting Electrodes
复制标题
陶瓷质子传导电极中质子复合的见解
DOI:
10.1149/1945-7111/abf79e
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发表时间:
2021
影响因子:
3.9
通讯作者:
McIntosh, Steven
中科院分区:
文献类型:
--
作者:
Chang, Jian;Lehman, Colin;Vohs, John M.;Gorte, Raymond J.;Vojvodic, Aleksandra;Yang, Kunli;McIntosh, Steven
The effect of catalyst addition on H 2 evolution from composite electrodes of La 0.7 Sr 0.3 TiO 3 (LST) and BaZr 0.1 Ce 0.7 Y 0.1 Yb 0.1 O 3− δ (BZCYYb) was studied. Starting with symmetric cells (LST∣∣ BZCYYb∣∣ LST), Pt was added to one or both electrodes, after which i–V polarization measurements were performed in humidified H 2 at 723 and 773 K. The base cells showed very high impedances but these decreased dramatically upon addition of Pt to both electrodes. When Pt was added to only one electrode, the cells performed as diodes, showing that Pt was necessary for H 2 dissociation but not for H recombination. The effects of adding Ru, W, Re and Fe were also studied. DFT calculations helped confirm that H recombination on BaZrO 3 is expected to be barrierless. The implications of these results for potential application to electrochemical synthesis of ammonia are discussed.
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DOI:
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发表时间:
1990
期刊:
影响因子:
--
作者:
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通讯作者:
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DOI:
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发表时间:
2010
期刊:
Physical Chemistry, Chemical Physics - PCCP
影响因子:
--
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2000
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DOI:
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发表时间:
2004
期刊:
影响因子:
--
作者:
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通讯作者:
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