A comparative study of elemental additives (Ni, Co and Ag) on electrocatalytic activity improvement of PdSn-based catalysts for ethanol and formic acid electro-oxidation

2014 ◽  
Vol 148 ◽  
pp. 291-301 ◽  
Author(s):  
Fuchun Zhu ◽  
Mei Wang ◽  
Yongwei He ◽  
Guanshui Ma ◽  
Zhonghua Zhang ◽  
...  
Keyword(s):  
Comparative Study ◽  
Formic Acid ◽  
Electrocatalytic Activity ◽  
Electro Oxidation

Surface Structure of Pt-Modified Au Nanoparticles and Electrocatalytic Activity in Formic Acid Electro-Oxidation

2007 ◽  
Vol 111 (51) ◽  
pp. 19126-19133 ◽  
Author(s):  
In-Su Park ◽  
Kug-Seung Lee ◽  
Jong-Ho Choi ◽  
Hee-Young Park ◽  
Yung-Eun Sung
Keyword(s):  
Formic Acid ◽  
Surface Structure ◽  
Electrocatalytic Activity ◽  
Au Nanoparticles ◽  
Electro Oxidation

Three dimensional palladium nanoflowers with enhanced electrocatalytic activity towards the anodic oxidation of formic acid

2015 ◽  
Vol 3 (3) ◽  
pp. 973-977 ◽  
Author(s):  
Bingqing Zhang ◽  
Hongliang Peng ◽  
Lijun Yang ◽  
Hualing Li ◽  
Haoxiong Nan ◽  
...  
Keyword(s):  
Formic Acid ◽  
Anodic Oxidation ◽  
Electrocatalytic Activity ◽  
Three Dimensional ◽  
Pd Nanoparticles ◽  
Enhanced Activity ◽  
Electro Oxidation

Pd nanoflowers (Pd-NF) composed of ultrathin Pd nanosheets show significantly enhanced activity towards the electro-oxidation of formic acid compared to ordinary Pd nanoparticles.

scholarly journals Fabrication of CuOx-Pd Nanocatalyst Supported on a Glassy Carbon Electrode for Enhanced Formic Acid Electro-Oxidation

2018 ◽  
Vol 2018 ◽  
pp. 1-9 ◽  
Author(s):  
Islam M. Al-Akraa ◽  
Ahmad M. Mohammad ◽  
Mohamed S. El-Deab ◽  
Bahgat E. El-Anadouli
Keyword(s):  
Formic Acid ◽  
Glassy Carbon ◽  
Electrocatalytic Activity ◽  
Active Material ◽  
Direct Oxidation ◽  
X Ray ◽  
Onset Potential ◽  
Composition And Structure ◽  
Electro Oxidation ◽  
Binary Catalyst

Formic acid (FA) electro-oxidation (FAO) was investigated at a binary catalyst composed of palladium nanoparticles (PdNPs) and copper oxide nanowires (CuOxNWs) and assembled onto a glassy carbon (GC) electrode. The deposition sequence of PdNPs and CuOxNWs was properly adjusted in such a way that could improve the electrocatalytic activity and stability of the electrode toward FAO. Several techniques including cyclic voltammetry, chronoamperometry, field-emission scanning electron microscopy, energy dispersive X-ray spectroscopy, and X-ray diffraction were all combined to report the catalyst’s activity and to evaluate its morphology, composition, and structure. The highest catalytic activity and stability were obtained at the CuOx/Pd/GC electrode (with PdNPs directly deposited onto the GC electrode followed by CuOxNWs with a surface coverage, Г, of ca. 49%). Such enhancement was inferred from the increase in the peak current of direct FAO (by ca. 1.5 fold) which associated a favorable negative shift in its onset potential (by ca. 30 mV). The enhanced electrocatalytic activity and stability (decreasing the loss of active material by ca. 1.5-fold) of the CuOx/Pd/GC electrode was believed originating both from facilitating the direct oxidation (decreasing the time needed to oxidize a complete monolayer of FA, increasing turnover frequency, by ca. 2.5-fold) and minimizing the poisoning impact (by ca. 71.5%) at the electrode surface during FAO.

Instant and Persistent Hydrogen Production Using Nano High Entropy Catalyst

2019 ◽  
Author(s):  
Nirmal Kumar ◽  
Subramanian Nellaiappan ◽  
Ritesh Kumar ◽  
Kirtiman Deo Malviya ◽  
K. G. Pradeep ◽  
...  
Keyword(s):  
Formic Acid ◽  
Minimum Energy ◽  
High Entropy Alloy ◽  
Hydrogen Energy ◽  
High Entropy ◽  
Electro Oxidation ◽  
The Individual ◽  
Novel Catalyst ◽  
Cell Anode ◽  
Fuel Cell Anode

<div>Renewable harvesting clean and hydrogen energy using the benefits of novel multicatalytic materials of high entropy alloy (HEA equimolar Cu-Ag-Au-Pt-Pd) from formic acid with minimum energy input has been achieved in the present investigation. The synthesis effect of pristine elements in the HEA drives the electro-oxidation reaction towards non-carbonaceous pathway . The atomistic simulation based on DFT rationalize the distinct lowering of the d-band center for the individual atoms in the HEA as compared to the pristine counterparts. This catalytic activity of the HEA has also been extended to methanol electro-oxidation to show the unique capability of the novel catalyst. The nanostructured HEA, properties using a combination of casting and cry omilling techniques can further be utilized as fuel cell anode in direct formic acid/methanol fuel cells (DFFE).<br></div>

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