Nanoporous Metal (Cu, Ag, Au) Films with High Surface Area:  General Fabrication and Preliminary Electrochemical Performance

2007 ◽  
Vol 111 (24) ◽  
pp. 8424-8431 ◽  
Author(s):  
Falong Jia ◽  
Chuanfang Yu ◽  
Kejian Deng ◽  
Lizhi Zhang
Keyword(s):  
Electrochemical Performance ◽  
Surface Area ◽  
High Surface ◽  
High Surface Area ◽  
Nanoporous Metal

Electrochemical performance of high surface area activated carbons derived from coal tar pitch

Carbon ◽  
2019 ◽  
Vol 145 ◽  
pp. 773 ◽  
Author(s):  
Kai Wang ◽  
Chao Gao ◽  
Song-en Li ◽  
Jin-yu Wang ◽  
Xiao-dong Tian ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Surface Area ◽  
Activated Carbons ◽  
High Surface ◽  
Coal Tar ◽  
High Surface Area ◽  
Coal Tar Pitch

scholarly journals Preparation and Electrochemical Performance of Polyimide-based Activated Carbons with High Surface Area

2017 ◽  
Vol 32 (11) ◽  
pp. 1181 ◽  
Author(s):  
WANG Hao ◽  
LI Lin ◽  
WANG Chun-Lei ◽  
WANG Qian ◽  
LIANG Chang-Hai ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Surface Area ◽  
Activated Carbons ◽  
High Surface ◽  
High Surface Area

scholarly journals Facile Synthesis of Bio-Template Tubular MCo2O4 (M = Cr, Mn, Ni) Microstructure and Its Electrochemical Performance in Aqueous Electrolyte

Processes ◽  
2020 ◽  
Vol 8 (3) ◽  
pp. 343 ◽  
Author(s):  
Deepa Guragain ◽  
Camila Zequine ◽  
Ram K Gupta ◽  
Sanjay R Mishra
Keyword(s):  
Electrochemical Performance ◽  
Surface Area ◽  
Gas Adsorption ◽  
Fourier Transforms ◽  
Coulombic Efficiency ◽  
High Surface ◽  
High Surface Area ◽  
Carbon Matrix ◽  
Superior Performance ◽  
Volume Distribution

In this project, we present a comparative study of the electrochemical performance for tubular MCo2O4 (M = Cr, Mn, Ni) microstructures prepared using cotton fiber as a bio-template. Crystal structure, surface properties, morphology, and electrochemical properties of MCo2O4 are characterized using X-ray diffraction (XRD), gas adsorption, scanning electron microscopy (SEM), Fourier transforms infrared spectroscopy (FTIR), cyclic voltammetry (CV), and galvanostatic charge-discharge cycling (GCD). The electrochemical performance of the electrode made up of tubular MCo2O4 structures was evaluated in aqueous 3M KOH electrolytes. The as-obtained templated MCo2O4 microstructures inherit the tubular morphology. The large-surface-area of tubular microstructures leads to a noticeable pseudocapacitive property with the excellent electrochemical performance of NiCo2O4 with specific capacitance value exceeding 407.2 F/g at 2 mV/s scan rate. In addition, a Coulombic efficiency ~100%, and excellent cycling stability with 100% capacitance retention for MCo2O4 was noted even after 5000 cycles. These tubular MCo2O4 microstructure display peak power density is exceeding 7000 W/Kg. The superior performance of the tubular MCo2O4 microstructure electrode is attributed to their high surface area, adequate pore volume distribution, and active carbon matrix, which allows effective redox reaction and diffusion of hydrated ions.

Promising electrochemical performance of high-surface-area boron-doped diamond/carbon nanotube electroanalytical sensors

2016 ◽  
Vol 20 (9) ◽  
pp. 2403-2409 ◽  
Author(s):  
Bruna C. Lourencao ◽  
Tiago A. Silva ◽  
Hudson Zanin ◽  
Paul W. May ◽  
Evaldo J. Corat ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Electrochemical Performance ◽  
Surface Area ◽  
High Surface ◽  
High Surface Area ◽  
Boron Doped Diamond ◽  
Boron Doped

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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