Anode Electrocatalyst Research Articles

Metal-organic frameworks-derived Ni2P@C Nanocomposite as a high-performance catalyst for hydrazine electrooxidation

Metal-organic frameworks (MOFs) have recently emerged as one class of intriguing precursors to prepare electrocatalysts that feature high porosity, good conductivity and easy functionalization with other heteroatoms. We herein report a facile synthesis of MOFs-derived Ni2P@C nanocomposite as a promising anode electrocatalyst of direct hydrazine fuel cells (DHFCs). Our study found that Ni-MOFs nanosheets could be readily anchored to the Ni foam (NF) by a solvothermal process. Phosphatization treatment of the Ni-MOFs resulted in the formation of hierarchically nanostructured Ni2P@C, wherein the catalytically active Ni2P nanoparticles was encapsulated by disordered carbon shells. The thus-prepared self-supporting Ni2P@C/NF electrocatalyst was featured by large active surface area, 3D hierarchical porous structure and good electronical conductivity. Consequently, it exhibited impressively high activity, excellent stability as well as a nearly 100% selectivity toward N2H4 electrooxidation, outperforming most reported DHFC anode electrocatalysts.

Porous palladium phosphide nanotubes for formic acid electrooxidation

AbstractThe development of an efficient catalyst for formic acid electrocatalytic oxidation reaction (FAEOR) is of great significance to accelerate the commercial application of direct formic acid fuel cells (DFAFC). Herein, palladium phosphide (PdxPy) porous nanotubes (PNTs) with different phosphide content (i.e., Pd3P and Pd5P2) are prepared by combining the self‐template reduction method of dimethylglyoxime‐Pd(II) complex nanorods and succedent phosphating treatment. During the reduction process, the self‐removal of the template and the continual inside–outside Ostwald ripening phenomenon are responsible for the generation of the one‐dimensional hollow and porous architecture. On the basis of the unique synthetic procedure and structural advantages, Pd3P PNTs with optimized phosphide content show outstanding electroactivity and stability for FAEOR. Importantly, the strong electronic effect between Pd and P promotes the direct pathway of FAEOR and inhibits the occurrence of the formic acid decomposition reaction, which effectively enhances the FAEOR electroactivity of Pd3P PNTs. In view of the facial synthesis, excellent electroactivity, high stability, and unordinary selectivity, Pd3P PNTs have the potential to be an efficient anode electrocatalyst for DFAFC.

Reconstruction-induced NiCu-based catalysts towards paired electrochemical refining

A paired electrochemical refinery for simultaneously producing value-added ammonium and formate is successfully demonstrated using reconstruction-induced NiCu-based nanocomposites as both cathode and anode electrocatalysts.

High-Performance Direct Borohydride-Hydrogen Peroxide Fuel Cell Using Ni Foam-Supported Ni-Co Nanoparticles as a Noble-Metal Free Anode Electrocatalyst

High-Performance Direct Borohydride-Hydrogen Peroxide Fuel Cell Using Ni Foam-Supported Ni-Co Nanoparticles as a Noble-Metal Free Anode Electrocatalyst

In situ electrochemical synthesis of Pd aerogels as highly efficient anodic electrocatalysts for alkaline fuel cells.

Improving the utilization of noble metals is extremely urgent for fuel cell electrocatalysis, while three-dimensional hierarchical noble metal aerogels with abundant sites and channels are proposed to reinforce their electrocatalytic performances and decrease their amounts. Herein, novel Pd aerogels with tunable surface chemical states were prepared through a facile in situ electrochemical activation, starting with PdO x aerogels by the hydrolysis method. The hierarchical porous Pd aerogels showed unprecedented high activity towards the electrocatalytic oxidation of fuels including methanol (2.99 A mgPd -1), ethanol (8.81 A mgPd -1), and others in alkali, outperforming commercial catalysts (7.12- and 13.66-fold, corresponding to methanol and ethanol). Theoretical investigation unveiled the hybrid surface states with metallic and oxidized Pd species in Pd aerogels to regulate the adsorption of intermediates and facilitate the synergistic oxidation of adsorbed *CO, resulting in enhanced activity with the MOR as the model. Therefore, efficient Pd aerogels through the in situ electrochemical activation of PdO x aerogels were proposed and showed great potential for fuel cell anodic electrocatalysis.

Black phosphorous/palladium functionalized carbon aerogel nanocomposite for highly efficient ethanol electrooxidation.

Direct ethanol fuel cells have great potential for practical power applications due to their easy operation, high energy density, and low toxicity. However, the slow and incomplete ethanol electrooxidation (EEO) reaction is a major drawback that hinders the development of this type of fuel cell. Here, we report a facile approach for the preparation of highly active, low cost and stable electrocatalysts based on palladium (Pd) nanoparticles and black phosphorus/palladium (BP/Pd) nanohybrids supported on a carbon aerogel (CA). The nanocomposites show remarkable catalytic performance and stability as anode electrocatalysts for EEO in an alkaline medium. A mass peak current density of 8376 mA mgPd -1 is attained for EEO on the BP/Pd/CA catalyst, which is 11.4 times higher than that of the commercial Pd/C catalyst. To gain deep insight into the structure-property relationship associated with superior electroactivity, the catalysts are well characterized in terms of morphology, surface chemistry, and catalytic activity. It is found that the BP-doped CA support provides high catalyst dispersibility, protection against leaching, and modification of the electronic and catalytic properties of Pd, while the catalyst modifies CA into a more open and conductive structure. This synergistic interaction between the support and the catalyst improves the transport of active species and electrons at the electrode/electrolyte interface, leading to rapid EEO reaction kinetics.

Core-shell Pd-P@Pt-Ni nanoparticles with enhanced activity and durability as anode electrocatalyst for methanol oxidation reaction.

Pd–P@Pt–Ni core–shell nanoparticles, which consisted of a Pd–P alloy as a core and Pt–Ni thin layer as a shell, were explored as electrocatalysts for methanol oxidation reaction. The crystallographic information and the electronic properties were fully investigated by X-ray diffraction and X-ray photoelectron spectroscopy. In the methanol electrooxidation reaction, the particles showed high catalytic activity and strong resistance to the poisoning carbonaceous species in comparison with those of commercial Pt/C and the as-prepared Pt/C catalysts. The excellent durability was demonstrated by electrochemically active surface area loss and chronoamperometric measurements. These results would be due to the enhanced catalytic properties of Pt by the double synergistic effects from the core part and the nickel species in the shell part.

Rhodium nanodendrites catalyzed alkaline methanol oxidation reaction in direct methanol fuel cells

Rh-based nanostructures are highly efficient Pt-alternative anode electrocatalysts for alkaline direct methanol fuel cells due to their high electroactivity for methanol oxidation reaction (MOR) in strong alkaline electrolyte. In this work, high-quality chlorine-free Rh nanodendrites (Rh-NDs) are easily synthesized by simple one-step chemical-reduction method. Physical characterization show that the appropriate reduction rate plays a pivotal role for the formation of Rh-NDs. Electrochemical results indicate that both methanol concentration and KOH concentration strongly determine the peak current value of MOR at Rh-NDs. Under optimal experiment conditions (3 M KOH concentration and 5 M methanol concentration), Rh-NDs show 3.17-fold electroactivity enhancement and enhanced durability for MOR relative to irregular Rh nanocrystals because the dendritic morphology not only provides the large specific surface area and rich corner/edge atoms with high electroactivity but also efficiently restrains the aggregation of nanoparticle subunits.

Synthesis of Free‐Standing Alloyed PdSn Nanoparticles with Enhanced Catalytic Performance for Ethanol Electrooxidation

AbstractAlloyed Pd‐based nanostructured materials have been demonstrated as highly active fuel cell anode electrocatalysts for the alcohol oxidation reaction. Challenges remain in the controlled synthesis of freestanding PdM alloys catalysts through optimization of their interfacial and surface structures, which can prevent degradation and poor durability. Herein, we present an oil‐bath‐based approach to synthesize PdxSny nanoparticles (NPs) with L‐ascorbic acid (AA) as a reducing agent and cetyltrimethylammonium bromide as a structure‐directing agent. PdxSny NPs (x/y=0.66, 0.83, and 1.11) show a particular freestanding shape. Among the three alloys, Pd20Sn24 (x/y=0.83) NPs have the best electrocatalytic activity (2018 mA mg−1) toward the ethanol oxidation reaction (EOR). The enhanced performance of PdxSny NPs might be attributed to i) a change in the electron structure of Pd, ii) varied interatomic distance within a unit cell, and iii) weak adsorption of in‐situ generated oxygen‐containing (e. g. *OH and Pd−O) or carbon‐containing (e. g. *CH3CHOH, *CH3CHO, and *CH3CO) intermediate species. Experimental data proposed that higher catalytic temperature, higher pH values, and higher ethanol concentration should accelerate each step of electrooxidation of the EOR.

Electrocatalytic performance impact of various bimetallic Pt-Pd alloy atomic ratio in robust ternary nanocomposite electrocatalyst toward boosting of methanol electrooxidation reaction

The low-loading of precious platinum (Pt) metal electrocatalysts development by alloying with less expensive of earth-abundant transition metals exhibiting high electrocatalytic activity and durability performance towards methanol oxidation reaction (MOR) for new generation sustainability of direct methanol fuel cell (DMFC) application has aroused increasing consideration. In this typical study, the as-prepared ternary nanocomposite electrocatalysts with controllable composition of the bimetallic Pt-Pd alloy nanoparticles (NPs) in acidic media were synthesized through a facile one-step hydrothermal-assisted formic acid reduction reaction. The main study on the critical impact of the bimetallic Ptx-Pdy alloy atomic ratio (x-y = 1:1, 2:3, 3:7, 1:4, 1:9) in the as-prepared ternary RGO/bimetallic Ptx-Pdy alloy/0.90CeO2 nanocomposite electrocatalyst upon its suitability as anode electrocatalyst towards the electrocatalytic performance of MOR was thoroughly evaluated at constant operating conditions. The results clearly demonstrated that the compositions of the bimetallic Pt-Pd alloy NPs can be easily adjusted by varying the Ptx-Pdy alloy atomic ratio that can contribute to the significant impact on the electrocatalytic activity of MOR in DMFC. Upon increase in the composition of Pd from the bimetallic Pt-Pd alloy atomic ratio of 1:1 to 2:3 led to increased electrocatalytic activity, long-term stability, durability cycles and charge transfer resistance with respect to the MOR. However, it was continuously decrease with further increase of the Pd proportion in the Pt-Pd alloy NPs atomic ratio of 3:7 to 1:9. The maximum peak current density of the MOR (39.83 mA cm-2) was obtained in the present research work for the as-synthesized ternary nanocomposite electrocatalyst with the bimetallic Pt-Pd alloy atomic ratio of 2:3. The as-synthesized ternary nanocomposite electrocatalyst with low noble Pt content through the alloying strategy could promotes practically employed as anode electrocatalyst under acidic media in DMFC application.

RuO2 Nanorods as an Electrocatalyst for Proton Exchange Membrane Water Electrolysis.

A custom-built PEM electrolyzer cell was assembled using 6” stainless-steel ConFlat flanges which were fitted with a RuO2 nanorod-decorated, mixed metal oxide (MMO) ribbon mesh anode catalyst. The current density–voltage characteristics were measured for the RuO2 nanorod electrocatalyst while under constant water feed operation. The electrocatalytic behavior was investigated by making a series of physical modifications to the anode catalyst material. These experiments showed an improved activity due to the RuO2 nanorod electrocatalyst, resulting in a corresponding decrease in the electrochemical overpotential. These overpotentials were identified by collecting experimental data from various electrolyzer cell configurations, resulting in an improved understanding of the enhanced catalytic behavior. The micro-to-nano surface structure of the anode electrocatalyst layer is a critical factor determining the overall operation of the PEM electrolyzer. The improvement was determined to be due to the lowering of the potential barrier to electron escape in an electric field generated in the vicinity of a nanorod.

Palladium-Nickel Electrocatalysts on Nitrogen-Doped Reduced Graphene Oxide Nanosheets for Direct Hydrazine/Hydrogen Peroxide Fuel Cells

In the present work, nitrogen-doped reduced graphene oxide-supported (NrGO) bimetallic Pd–Ni nanoparticles (NPs), fabricated by means of the electrochemical reduction method, are investigated as an anode electrocatalyst in direct hydrazine–hydrogen peroxide fuel cells (DHzHPFCs). The surface and structural characterization of the synthesized catalyst affirm the uniform deposition of NPs on the distorted NrGO. The electrochemical studies indicate that the hydrazine oxidation current density on Pd–Ni/NrGO is 1.81 times higher than that of Pd/NrGO. The onset potential of hydrazine oxidation on the bimetallic catalyst is also slightly more negative, i.e., the catalyst activity and stability are improved by Ni incorporation into the Pd network. Moreover, the Pd–Ni/NrGO catalyst has a large electrochemical surface area, a low activation energy value and a low resistance of charge transfer. Finally, a systematic investigation of DHzHPFC with Pd–Ni/NrGO as an anode and Pt/C as a cathode is performed; the open circuit voltage of 1.80 V and a supreme power density of 216.71 mW cm−2 is obtained for the synthesized catalyst at 60 °C. These results show that the Pd–Ni/NrGO nanocatalyst has great potential to serve as an effective and stable catalyst with low Pd content for application in DHzHPFCs.

Synthesis and characterization of palladium nanoparticles-corannulene nanocomposite: An anode electrocatalyst for direct oxidation of methanol in alkaline medium

• Catalyst based on PdNPs and corannulene has been developed for methanol fuel cells. • Corannulene is used as novel Supporting Material in fuel cell applications. • The catalyst exhibits high current density and long-term stability. • Corannulene support has reduced the loading of PdNPs. Herein a facile route to anchor transition metal nanoparticles on a bowl-shaped carbon material has been described to prepare a novel nanocomposite as an anode electrode for fuel cell applications. To accomplish this, palladium nanoparticles (PdNPs) have been electrochemically decorated on corannulene-based curved carbon material. The proposed catalyst was structurally and morphologically characterized by various techniques. The performance of the catalyst was evaluated by electrochemical techniques such as CV, EIS, LSV, and CA. The PdNPs@Corannulene catalyst shows high MOR activity of 102.1 mA/cm 2 in an alkaline medium and good stability when compared with most of the reported Pd-based catalysts and Pd/C. The developed electrocatalyst exhibited a high surface area, good current density, excellent anti-poisoning ability, and superior catalytic activity towards methanol oxidation. The results presented herein revealed that molecularly curved carbon-corannulene as a novel support material in the design of nanostructured catalysts will open a new avenue for high-performance fuel cell applications.

Enhancing the activity and durability of iridium electrocatalyst supported on boron carbide by tuning the chemical state of iridium for oxygen evolution reaction

The main challenge for the anode electrocatalyst in a polymer electrolyte membrane water electrolyzer (PEMWE) is to maintain activity and stability simultaneously under the corrosive environment. We report a highly active and durable iridium electrocatalyst supported on boron carbide for the oxygen evolution reaction. The physical and electrochemical properties of the catalyst are controlled by changing the synthetic reduction temperature from 30 °C to 100 °C. The prepared Ir/B4C-100 °C catalyst shows two times higher mass activity than Ir/B4C-30 °C, even outperforming two commercial catalysts. The improved activity can be correlated to the high concentration of Ir (III) and OH species on the surface and the well-dispersed iridium nanoparticles on the support. Controlling the reduction temperature is also found to enhance iridium stability by developing the interactions between iridium and B4C. These metal-support interactions inhibit the oxidative dissolution of Ir (III) and the aggregation of iridium species. Ir/B4C-100 °C also shows better single cell performance than those of two commercial catalysts when tested in a PEMWE. The cell with the synthesized catalyst of Ir/B4C-100 °C shows a current density of 1.98 A/cm2 at 1.8 V, whereas those with two commercial catalysts exhibit values of 1.36 and 0.692 A/cm2 at 1.8 V, respectively.

Fabrication of nanocomposite networks using Pd nanoparticles/Polydiphenylamine anchored on the surface of reduced graphene oxide: An efficient anode electrocatalyst for oxidation of methanol

Direct methanol fuel cells (DMFCs) are an essential aspect of electricity and fuel concerns. Herein, we report a new combination of Palladium nanoparticles anchored on polydiphenylamine with reduced graphene oxide network (rGO/PDPA/Pd) nanohybrid synthesized via an in-situ chemical strategy. The rGO/PDPA/Pd electrocatalyst shows excellent electrocatalytic activity, lower oxidation potential (−0.1 V), improved current density (2.85 mA/cm2), excellent cyclic stability (94%), and longevity (1200 s) towards methanol oxidation reaction (MOR) in the alkaline medium, when compared to commercial Pd/C electrocatalyst. Significantly, the forward oxidation peak potential of rGO/PDPA/Pd electrocatalyst was shifted negatively by 110 mV as compared to commercial Pd/C electrocatalyst. These results suggest that rGO/PDPA/Pd electrocatalyst is considered as an effective anode catalyst for DMFCs.

Evaluation of Anode Porous Transport Layer Using Polarization Separation Method on PEM Water Electrolysis

Introduction Recently, proton exchange membrane water electrolysis (PEMWE) has been expected as the hydrogen production technologies to convert the renewable energy with regional and temporal unevenness into hydrogen, which can be stored and transported. PEMWE has a high energy conversion efficiency at the high current density, however it is required to reduce the high material cost due to the utilization of noble metals. Currently, the development of new components and the reduction the amount of noble metals have been conducted. The porous transport layer (PTL) is one of the most important elements to improve the efficiency of PEMWE. PTLs have the roles such as the transporting electrons between the catalyst layer (CL) and the end plate, the discharging the generated gas, and supplying water to CL. Therefore, the accurate separation and determination of the polarization in the electrolyzer are essential technologies. In that case, the potential measurement using reference electrodes can be useful. In this study, we measured the anode and cathode polarizations by the elimination of membrane resistance, and evaluated the polarization of anode PTLs with a small size electrolyzer using double references. Experimental Figure 1 shows the schematic drawing of 1 cm2 electrolyzer with double references. Hydrogen storage Pd reference (PdH) were placed on the membrane by the contact with 0.5 M H2SO4. Anode and cathode electrocatalysts were IrOx (TKK) and Pt/C (TKK), respectively. The 1.0 mgIr/cm2 of anode catalyst was decaled on PEM (Nafion®115, DuPont) with Nafion ionomer, and the 1.0 mgPt/cm2 of cathode catalyst was assembled on the membrane as a catalyst coated electrode supported a carbon paper (39BC, SIGRACET®). Pt plated Ti (MMC) and the carbon paper were used as the anode and cathode PTL, respectively. These electrodes were fixed straight (x = 0 mm) or shift (x = 0.3, 0.5, 0.7, 1.0 mm) stacking as shown in Fig. 1. Operation temperature of the electrolyzer conducted at 80℃. DI water was pumped and induced at flow rates of 10 ml/min and 2 ml/min to the anode and cathode, respectively. The performance was evaluated by the chronoamperometry (CA) and the electrochemical impedance spectroscopy (EIS). Results and discussion Figure 2 shows the relationship between the inner resistance R ac obtained from high frequency resistance of EIS and the direct current resistance R dc between references. The slopes of line, which passed through the origin, became larger as the increase of shift amount. As the slope represented θ, they can be written by equation (1). Next, using the α, the relationship between R dc and R membrane is defined by equation (2). Here, assuming that the contact resistance between PTL and CL is sufficiently small, R ac is equal to membrane resistance R membrane. Hence, R membrane can be calculated as α is equal to θ.Figure 3 shows the Tafel plots of anode and cathode polarization curves using reference electrodes of anode or cathode sides, and the membrane iR removed polarization curves E corrected , assuming the reference potential was equivalent to 8 % (= (100-84)/2) from the electrode/electrolyte interface (x = 1.0 mm). E corrected on cathode side was approximately identical to the extrapolated Tafel slope, and there was no mass transfer effect, which is the difference between the two curves. The reason is that the cathode side was only hydrogen generation by supplying electrons. On the other hand, E corrected on anode side showed the overpotential for the extrapolation of Tafel slope above anode potential of 1.4 V vs. PdH, and especially in the high current density area, it was affected by larger mass transfer resistance than cathode side. This overpotential was considered the water/oxygen transfer resistance or/and the transfer resistance related to the electrons in CL around PTL.Figure 4 shows the comparison of overpotential for anode PTLs. In this current density range, these plots showed the linear relationship between the overpotential and the current density. To compare the anode PTLs, PTL A indicated smaller overpotential than PTL B with smaller pore size and bigger porosity.In conclusion, the double references potential measurement with shift arrangement of electrodes enabled to separate the polarization into anode and cathode, and remove the membrane iR. Based on this method, this measurement method using the developed electrolyzer indicated to be able to evaluate the difference of PTL overpotential for the several type PTLs. Acknowledgment This study was supported by the development of fundamental technology for advancement of water electrolysis hydrogen production in advancement of hydrogen technologies and utilization project (JPNP14021) commissioned by the New Energy and Industrial Technology Development Organization (NEDO) in Japan. Figure 1

Controlling Electrocatalytic Oxygen-Atom Transfer Reactions

Oxygen-atom functionalization of chemical intermediates to generate epoxides and lactones is critical for the production of diverse textiles, plastics, and pharmaceuticals. The wet chemical and thermochemical routes used today suffer from large carbon dioxide footprints, stoichiometric waste products, and hazardous reagents. In this presentation, we will discuss methods by which water can be used as the oxygen source in functionalization reactions, including epoxidation and lactonization, with tailored metal and metal oxide anodic electrocatalysts. At the cathode, hydrogen is selectively generated, reflecting that this reaction can be thought of as a derivative of water splitting, in which the oxidizing equivalents go towards generating a valuable product rather than generating molecular oxygen. Direct oxygen-atom transfer reactions for epoxidation can be extended through use of a mediator, increasing the scope of olefins which can be epoxidized to include substrates such as ethylene. We have developed mechanistic understanding of how water is oxidized, providing means by which the selectivity for oxygen-atom functionalization can be rationally improved.

Synthesis of PtRu alloy nanofireworks as effective catalysts toward glycerol electro-oxidation in alkaline media

Electro-oxidation of glycerol is a key anodic reaction in direct alcohol fuel cell (DAFCs). Exploring the cost-effective nanocatalysts for glycerol oxidation reaction (GOR) is very important for the development of DAFC, but it is still challenging. In this paper, nanofirework-like PtRu alloy catalyst was successfully synthesized and used for GOR in alkaline medium. Thanks to the unique nanofirework-like structure and synergetic effects, the activity and stability of the as-prepared PtRu alloy nanofireworks (NFs) toward GOR were significantly improved relative to Pt NFs. In particular, the peak current density of GOR catalyzed by the optimized Pt1Ru3 NFs catalyst reached 2412.0 mA mg−1, surpassing that of commercial Pt/C catalyst. This work has important guidance for the design of advanced anode electrocatalysts for fuel cells.

Investigation of palladium-mesostructured silica nanoparticles (Pd-MSN) as anode electrocatalyst for alkaline direct methanol fuel cell

The commercialization of fuel cells is hindered by the high cost of noble metal electrocatalysts, such as platinum. Mesostructured silica nanoparticles (MSNs), as a novel catalyst support, are added to active palladium nanoparticles to create a Pd-MSN electrocatalyst with low Pd content to improve catalytic efficacy and decrease costs. Wet impregnation method was used to prepare catalysts that comprise palladium nanoparticles supported on MSNs (i.e. 5 wt% Pd-MSN, 10 wt% Pd-MSN, 15 wt% Pd-MSN, 20 wt% Pd-MSN and 20 wt% Pd-C) to enhance electrocatalytic activity for methanol oxidation. The structures of the catalysts were characterized by X-ray diffraction (XRD), Fourier transform infrared spectrometry (FTIR), field-emission scanning electron microscopy (FESEM), energy-dispersive X-ray (EDX) and Brunauer–Emmet–Teller (BET) surface area analysis, and their electrocatalytic performance towards methanol oxidation was investigated by cyclic voltammetry (CV) and chronoamperometry (CA). Amongst the catalysts, 20 wt% Pd-MSN has the highest electrocatalytic activity (14.3 mA cm−2) and stability (3600 s) for methanol oxidation in alkaline medium at the constant potential of −0.2 V. This result indicates that 20 wt% Pd-MSN may be a promising anode material for direct methanol fuel cells. The improved electrocatalytic activity and stability of the electrocatalyst are attributed to the high specific surface area of MSN and the effective surface structure of Pd nanoparticles. Furthermore, MSN increases catalyst dispersion by producing new active sites, which results in the promotion of Pd utilization.

Two-Step Dry Synthesis of Binderless 3D Low Pt-Loading Electrocatalysts for Direct Alkaline Methanol Fuel Cell Anodes

Three-dimensional (3D) porous electrocatalysts of low platinum loading were synthesized by gas-phase pulsed laser ablation (PLA) and deposited on multiwalled carbon nanotubes (MWCNTs) directly grown on a stainless steel mesh current collector by catalyst-free chemical vapor deposition (Pt/MWCNT/SS). The performance of the developed electrocatalysts was evaluated for the methanol oxidation reaction (MOR). The PLA chamber pressure and ablation time were optimized to achieve the highest methanol oxidation current per Pt loading and electrochemically active surface area while maintaining structural stability. The most robust electrocatalyst, obtained with PLA at 10–5 Torr for 5 min, exhibited a 50% higher methanol oxidation current compared to the commercial Pt/C with similar Pt loading. In addition, it showed the lowest loss of active sites after stability tests while maintaining its structural integrity. Increasing the electrolyte temperature from 0 to 80 °C significantly improved the methanol oxidation current on Pt/MWCNT/SS by 13 times compared to 5.8 times for Pt/C. Electrochemical impedance spectroscopy confirmed the faster kinetics of MOR and accelerated oxidation of adsorbed CO on the surface of the Pt/MWCNT/SS relative to the Pt/C.