Enhanced Electrooxidation of Methanol via Ion Implantation of Co Nanoparticles onto 3D Ni Foam Templates

Guo, Meisong; Yu, Yanan; Hu, Jingbo

doi:10.1149/2.0751704jes

Cited by 4 publications

(3 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Electrodeposition as a facile and efficient method shows great promise in the direct decoration of electrocatalysts on substrates. Nickel foam (NF) with a special porous three-dimensional (3D) structure, mechanical flexibility, and electrical conductivity is always used as the current collector, which increases specific surface areas and accelerates the release of gaseous products. , So far as we know, this is the first report on Pd as an electrocatalyst, porous MnO 2 as a promoter, and NF as a conductive substrate, simultaneously used for methanol oxidation.…”

Section: Introductionsupporting

confidence: 91%

Fabrication of Coral-like Pd based Porous MnO₂ Nanosheet Arrays on Nickel Foam for Methanol Electrooxidation

Cheng

Guo

et al. 2018

Ind. Eng. Chem. Res.

Self Cite

View full text Add to dashboard Cite

Direct methanol fuel cells (DMFCs) have been seen as one of the desirable power sources, and the performance always depends on the ability of electrode materials to oxidize methanol. In this work, we report a novel electrode composed of coral-like Pd and porous MnO 2 nanosheet arrays on nickel foam (Pd−MnO 2 /NF). MnO 2 and Pd are successively electrodeposited on NF with different concentrations of PdCl 2 , which decides the shape of Pd and catalytic properties. Compared with Pd/NF, Pd−MnO 2 /NF exhibits excellent catalytic performance and good stability for methanol oxidation in alkaline solution. The mass activity of Pd−MnO 2 /NF with low Pd loading is 197.7 mA mg −1 , which is 2.3-fold higher than that of Pd/NF. The improvement of performance mainly comes from MnO 2 , which supplies a number of oxygen atoms to reduce intermediates and enhance antipoisoning ability.

show abstract

Section: Introductionsupporting

confidence: 91%

Fabrication of Coral-like Pd based Porous MnO₂ Nanosheet Arrays on Nickel Foam for Methanol Electrooxidation

Cheng

Guo

et al. 2018

Ind. Eng. Chem. Res.

Self Cite

View full text Add to dashboard Cite

show abstract

“…However, several problems restrict its practical commercialization such as materials and technical shortcomings. 57 In the electro-oxidation aspect, Pt is the best known monometallic electrocatalyst for small organic molecules because it has a capability to catalyze C-H bond cleavage and CO oxidation at a comparatively low overpotential. [58][59][60] However, the low utilization, high cost and decaying activity restrain their wide application.…”

Section: Fuel Cellmentioning

confidence: 99%

“…72,73 Meanwhile, alcohols with higher molecule weight, like C2 alcohols (ethylene glycol and ethanol) 61 and C3 alcohols (glycerol, 1,2-propanol, 1,3-propanol, 1-proponal, and 2-proponal) [75][76][77] are less toxic and of higher boiling points and energy densities, making them alternatives for the application for fuel cell. 57,59 showing the components of an expanded MEA. 41 Introduction Chapter 1 6 79 Among C3 saturated alcohols, glycerol is becoming the focus in recent years.…”

Section: Fuel Cellmentioning

confidence: 99%

The electro-oxidation of C1, C2 and C3 saturated alcohols on nickel-cobalt oxides

Sun¹

View full text Add to dashboard Cite

The energy and environment problems are becoming focus in recent decades. The electrooxidation of small molecules is attracting an increasing interest in many fields like water splitting, fuel cell, environmental protection, and fine chemical industry. Hydrogen, water, urea, and alcohols is becoming the major objects due to their simple molecule structure and availability in energy and fine chemistry industry. Water splitting is based on the bond cleavage of hydrogen and the bond formation of oxygen and oxygen by applying external energy to obtain hydrogen as clean energy. In fuel cells, the oxidation of fuels like hydrogen and alcohol plays the key role in obtaining high voltage and high efficiency. In the field of environmental protection, the substance with potential toxicity can be converted into environment-friendly substance by electro-oxidation. In fine chemical industry, converting alcohols to value-added chemicals by electrochemical method has also become the hot topic. This thesis is focused on the electro-oxidation of small molecular (C1, C2, and C3) alcohols on Ni-Co hydroxides and Ni-Co oxides in alkaline. The Ni-Co hydroxides with various Ni contents were prepared by electrodeposition, and Ni-Co oxides were obtained by calcinating the corresponding Ni-Co hydroxides. For C1 alcohol methanol, the investigation was given to the Ni effect in Ni-Co hydroxides and Ni-Co oxides for methanol oxidation reaction. Cyclic voltammetry (CV) and chronoamperometry (CA) methods were used to compare the methanol oxidation activity. The results show that as the Ni content increases, the methanol oxidation activity on Ni-Co hydroxides increases, while the activity on Ni-Co oxides exhibits a volcano-shaped trend. The highest activity on Ni-Co oxides was found at the atomic ratio of Ni / (Ni + Co) = 46%. By conducting electrochemical impedance spectroscopy (EIS), it was found that Ni can promote the adsorption of intermediate products. It suggests that this best ratio of 46% for the methanol electro-oxidation was due to the balance of the adsorption of intermediate products and methanol oxidation onset potential. For C2 alcohols, ethanol and ethylene glycol, the study was performed to reveal the Ni effect of Ni-Co oxides on the oxidation activity and the Abstract iiproduct selectivity. The similar volcano-shaped trend was also obtained, i.e. the ratio of 46% is the optimal one for the two alcohol oxidation reactions. The oxidation products were analyzed by nuclear magnetic resonance (NMR) technique and it was found that the functional groups were converted from -OH to -COOH. The electro-oxidation of C3 saturated alcohols was studied on Co3O4. It shows that C3 saturated alcohols had different reaction rates on Co3O4, which presented the following order: glycerol (GLY) > 1,2propanediol (1,2-P) > 1,3-propanediol (1,3-P) > 1-propanol (1-P) > 2-propanol (2-P).Through NMR analysis, we found that for the adjacent hydroxyl groups, the C-C bond can be readily broken up.In future work, we plan to compare Ni/Co effect in different ...

show abstract

A high-efficiency noble metal-free electrocatalyst of cobalt-iron layer double hydroxides nanorods coupled with graphene oxides grown on a nickel foam towards methanol electrooxidation

Yang

Guo

Yin

et al. 2020

Journal of the Taiwan Institute of Chemical Engineers

View full text Add to dashboard Cite

Enhanced Electrooxidation of Methanol via Ion Implantation of Co Nanoparticles onto 3D Ni Foam Templates

Cited by 4 publications

References 41 publications

Fabrication of Coral-like Pd based Porous MnO₂ Nanosheet Arrays on Nickel Foam for Methanol Electrooxidation

Fabrication of Coral-like Pd based Porous MnO₂ Nanosheet Arrays on Nickel Foam for Methanol Electrooxidation

The electro-oxidation of C1, C2 and C3 saturated alcohols on nickel-cobalt oxides

A high-efficiency noble metal-free electrocatalyst of cobalt-iron layer double hydroxides nanorods coupled with graphene oxides grown on a nickel foam towards methanol electrooxidation

Contact Info

Product

Resources

About

Enhanced Electrooxidation of Methanol via Ion Implantation of Co Nanoparticles onto 3D Ni Foam Templates

Cited by 4 publications

References 41 publications

Fabrication of Coral-like Pd based Porous MnO2 Nanosheet Arrays on Nickel Foam for Methanol Electrooxidation

Fabrication of Coral-like Pd based Porous MnO2 Nanosheet Arrays on Nickel Foam for Methanol Electrooxidation

The electro-oxidation of C1, C2 and C3 saturated alcohols on nickel-cobalt oxides

A high-efficiency noble metal-free electrocatalyst of cobalt-iron layer double hydroxides nanorods coupled with graphene oxides grown on a nickel foam towards methanol electrooxidation

Contact Info

Product

Resources

About

Fabrication of Coral-like Pd based Porous MnO₂ Nanosheet Arrays on Nickel Foam for Methanol Electrooxidation

Fabrication of Coral-like Pd based Porous MnO₂ Nanosheet Arrays on Nickel Foam for Methanol Electrooxidation