Molded, High Surface Area Polymer Electrolyte Membranes from Cured Liquid Precursors

2006 ◽  
Vol 128 (39) ◽  
pp. 12963-12972 ◽  
Author(s):  
Zhilian Zhou ◽  
Raymond N. Dominey ◽  
Jason P. Rolland ◽  
Benjamin W. Maynor ◽  
Ashish A. Pandya ◽  
...  
Keyword(s):  
Polymer Electrolyte ◽  
Surface Area ◽  
High Surface ◽  
High Surface Area ◽  
Polymer Electrolyte Membranes ◽  
Liquid Precursors ◽  
Electrolyte Membranes

scholarly journals Molded, High Surface Area Polymer Electrolyte Membranes from Cured Liquid Precursors [J. Am.Chem. Soc.2006,128,12963−12972].

2006 ◽  
Vol 128 (48) ◽  
pp. 15547-15547
Author(s):  
Zhilian Zhou ◽  
Raymond N. Dominey ◽  
Jason P. Rolland ◽  
Benjamin W. Maynor ◽  
Ashish A. Pandya ◽  
...  
Keyword(s):  
Polymer Electrolyte ◽  
Surface Area ◽  
High Surface ◽  
High Surface Area ◽  
Polymer Electrolyte Membranes ◽  
Liquid Precursors ◽  
Electrolyte Membranes

Tenacious Mass Transfer Limitations Drive Catalytic Selectivity during Electrochemical Carbon Dioxide Reduction

2019 ◽  
Author(s):  
Kailun Yang ◽  
Recep Kas ◽  
Wilson A. Smith
Keyword(s):  
Surface Area ◽  
High Surface ◽  
High Surface Area ◽  
Catalyst Layer ◽  
Active Surface ◽  
Active Surface Area ◽  
High Concentration ◽  
Copper Electrodes ◽  
Surface Enhanced ◽  
Local Current

<p>This study evaluated the performance of the commonly used strong buffer electrolytes, i.e. phosphate buffers, during CO<sub>2</sub> electroreduction in neutral pH conditions by using in-situ surface enhanced infrared absorption spectroscopy (SEIRAS). Unfortunately, the buffers break down a lot faster than anticipated which has serious implications on many studies in the literature such as selectivity and kinetic analysis of the electrocatalysts. Increasing electrolyte concentration, surprisingly, did not extend the potential window of the phosphate buffers due to dramatic increase in hydrogen evolution reaction. Even high concentration phosphate buffers (1 M) break down within the potentials (-1 V vs RHE) where hydrocarbons are formed on copper electrodes. We have extended the discussion to high surface area electrodes by evaluating electrodes composed of copper nanowires. We would like highlight that it is not possible to cope with high local current densities on these high surface area electrodes by using high buffer capacity solutions and the CO<sub>2</sub> electrocatalysts are needed to be evaluated by casting thin nanoparticle films onto inert substrates as commonly employed in fuel cell reactions and up to now scarcely employed in CO<sub>2</sub> electroreduction. In addition, we underscore that normalization of the electrocatalytic activity to the electrochemical active surface area is not the ultimate solution due to concentration gradient along the catalyst layer.This will “underestimate” the activity of high surface electrocatalyst and the degree of underestimation will depend on the thickness, porosity and morphology of the catalyst layer. </p> <p> </p>

scholarly journals Rugae-like FeP nanocrystal assembly on a carbon cloth: an exceptionally efficient and stable cathode for hydrogen evolution

Nanoscale ◽  
2015 ◽  
Vol 7 (25) ◽  
pp. 10974-10981 ◽  
Author(s):  
Xiulin Yang ◽  
Ang-Yu Lu ◽  
Yihan Zhu ◽  
Shixiong Min ◽  
Mohamed Nejib Hedhili ◽  
...  
Keyword(s):  
Gas Phase ◽  
Surface Area ◽  
Hydrogen Evolution ◽  
Hydrogen Generation ◽  
High Surface ◽  
High Surface Area ◽  
Catalytic Efficiency ◽  
Carbon Cloth ◽  
Nanocrystal Assembly

High surface area FeP nanosheets on a carbon cloth were prepared by gas phase phosphidation of electroplated FeOOH, which exhibit exceptionally high catalytic efficiency and stability for hydrogen generation.

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