scholarly journals Triple phase boundary and power density enhancement in PEMFCs of a Pt/C electrode with double catalyst layers

RSC Advances ◽  
2019 ◽  
Vol 9 (27) ◽  
pp. 15635-15641 ◽  
Author(s):  
Dung Van Dao ◽  
Ganpurev Adilbish ◽  
Thanh Duc Le ◽  
In-Hwan Lee ◽  
Yeon-Tae Yu
Keyword(s):  
Phase Boundary ◽  
Power Density ◽  
Triple Phase Boundary ◽  
Catalyst Layers ◽  
Density Enhancement ◽  
First Time

Pt/C double catalyst layers (DCL), serving as an anodic electrode, have been utilized in a PEMFC application for the first time.

Micro Galvanic Cell To Generate PtO and Extend the Triple-Phase Boundary during Self-Assembly of Pt/C and Nafion for Catalyst Layers of PEMFC

2017 ◽  
Vol 9 (44) ◽  
pp. 38165-38169 ◽  
Author(s):  
Zhi Long ◽  
Liqin Gao ◽  
Yankai Li ◽  
Baotao Kang ◽  
Jin Yong Lee ◽  
...  
Keyword(s):  
Phase Boundary ◽  
Self Assembly ◽  
Galvanic Cell ◽  
Triple Phase Boundary ◽  
Catalyst Layers

scholarly journals Electrochemically Driven C-N Bond Formation from CO2 and Ammonia at the Triple-Phase Boundary

2021 ◽  
Author(s):  
Junnan Li ◽  
Nikolay Kornienko
Keyword(s):  
Phase Boundary ◽  
Water Electrolysis ◽  
Copper Catalysts ◽  
Electrochemical Analysis ◽  
Reaction Pathways ◽  
Triple Phase Boundary ◽  
Sustainable Technologies ◽  
Mechanistic Analysis ◽  
Energy Science ◽  
First Time

<p>Electrosynthetic techniques are gaining prominence across the fields of chemistry, engineering and energy science. However, most works within the direction of synthetic heterogeneous electrocatalysis focus on water electrolysis and CO<sub>2</sub> reduction. In this work, we moved to expand the scope of this technology by developing a synthetic scheme which couples CO<sub>2</sub> and NH<sub>3</sub> at a gas-liquid-solid triple-phase boundary to produce species with C-N bonds. Specifically, by bringing in CO<sub>2</sub> from the gas phase and NH<sub>3</sub> from the liquid phase together over solid copper catalysts, we have succeeded in forming formamide and acetamide products for the first time. In a subsequent complementary step, we have combined electrochemical analysis and a newly developed <i>operando </i>spectroelectrochemical method, capable of probing the aforementioned triple phase boundary, to extract an initial level of mechanistic analysis regarding the reaction pathways of these reactions and the current system’s limitations. We believe that the development and understanding of this set of reaction pathways will play an exceptionally significant role in expanding the community’s understanding of on-surface electrosynthetic reactions as well as push this set of inherently sustainable technologies towards widespread applicability. </p>

scholarly journals Electrochemically Driven C-N Bond Formation from CO2 and Ammonia at the Triple-Phase Boundary

2021 ◽  
Author(s):  
Junnan Li ◽  
Nikolay Kornienko
Keyword(s):  
Phase Boundary ◽  
Water Electrolysis ◽  
Copper Catalysts ◽  
Electrochemical Analysis ◽  
Reaction Pathways ◽  
Triple Phase Boundary ◽  
Sustainable Technologies ◽  
Mechanistic Analysis ◽  
Energy Science ◽  
First Time

<p>Electrosynthetic techniques are gaining prominence across the fields of chemistry, engineering and energy science. However, most works within the direction of synthetic heterogeneous electrocatalysis focus on water electrolysis and CO<sub>2</sub> reduction. In this work, we moved to expand the scope of this technology by developing a synthetic scheme which couples CO<sub>2</sub> and NH<sub>3</sub> at a gas-liquid-solid triple-phase boundary to produce species with C-N bonds. Specifically, by bringing in CO<sub>2</sub> from the gas phase and NH<sub>3</sub> from the liquid phase together over solid copper catalysts, we have succeeded in forming formamide and acetamide products for the first time. In a subsequent complementary step, we have combined electrochemical analysis and a newly developed <i>operando </i>spectroelectrochemical method, capable of probing the aforementioned triple phase boundary, to extract an initial level of mechanistic analysis regarding the reaction pathways of these reactions and the current system’s limitations. We believe that the development and understanding of this set of reaction pathways will play an exceptionally significant role in expanding the community’s understanding of on-surface electrosynthetic reactions as well as push this set of inherently sustainable technologies towards widespread applicability. </p>

scholarly journals Electrochemically Driven C-N Bond Formation from CO2 and Ammonia at the Triple-Phase Boundary

2021 ◽  
Author(s):  
Junnan Li ◽  
Nikolay Kornienko
Keyword(s):  
Phase Boundary ◽  
Water Electrolysis ◽  
Copper Catalysts ◽  
Electrochemical Analysis ◽  
Reaction Pathways ◽  
Triple Phase Boundary ◽  
Sustainable Technologies ◽  
Mechanistic Analysis ◽  
Energy Science ◽  
First Time

<p>Electrosynthetic techniques are gaining prominence across the fields of chemistry, engineering and energy science. However, most works within the direction of synthetic heterogeneous electrocatalysis focus on water electrolysis and CO<sub>2</sub> reduction. In this work, we moved to expand the scope of this technology by developing a synthetic scheme which couples CO<sub>2</sub> and NH<sub>3</sub> at a gas-liquid-solid triple-phase boundary to produce species with C-N bonds. Specifically, by bringing in CO<sub>2</sub> from the gas phase and NH<sub>3</sub> from the liquid phase together over solid copper catalysts, we have succeeded in forming formamide and acetamide products for the first time. In a subsequent complementary step, we have combined electrochemical analysis and a newly developed <i>operando </i>spectroelectrochemical method, capable of probing the aforementioned triple phase boundary, to extract an initial level of mechanistic analysis regarding the reaction pathways of these reactions and the current system’s limitations. We believe that the development and understanding of this set of reaction pathways will play an exceptionally significant role in expanding the community’s understanding of on-surface electrosynthetic reactions as well as push this set of inherently sustainable technologies towards widespread applicability. </p>

EIS Analysis of the Triple Phase Boundary Model

2019 ◽  
Vol 19 (32) ◽  
pp. 23-31
Author(s):  
Abhishek Dhanda ◽  
Ryan O'Hayre ◽  
Heinz Pitsch
Keyword(s):  
Phase Boundary ◽  
Triple Phase Boundary ◽  
Boundary Model ◽  
Eis Analysis
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