Preparation, characterization and hydrogen production performance of MoPd deposited carbon felt/Mo electrodes

Demir, Derya Dilek; Salcı, Abdullah; Solmaz, Ramazan

doi:10.1016/j.ijhydene.2018.01.030

Cited by 27 publications

(8 citation statements)

References 57 publications

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“…Palladium is widely used to enhance the HER process , and has been employed in the form of clusters and coatings with graphite, − carbon nanotubes, graphene, , molybdenum nanosystems, ,, and various metal nanoparticle systems − for use in fuel cell applications. In contrast to most metals and alloys, the dissociation of H 2 molecules within Pd structures is facile, occurs with almost no activation barrier, and serves as an ideal catalyst for hydrogen sorption and desorption. , The core approach here, however, is not to utilize the hydrogen being produced but rather to exploit the change in local pH that arises as a consequence of the electrolysis.…”

Section: Resultsmentioning

confidence: 99%

“…Electrochemically Induced Dissolution of CAP. Palladium is widely used to enhance the HER process 20,21 and has been employed in the form of clusters and coatings with graphite, 22−24 carbon nanotubes, 25 graphene, 26,27 molybdenum nanosystems, 22,28,29 and various metal nanoparticle systems 30−32 for use in fuel cell applications. In contrast to most metals and alloys, the dissociation of H 2 molecules within Pd structures is facile, occurs with almost no activation barrier, and serves as an ideal catalyst for hydrogen sorption and desorption.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

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Electrochemically Controlled Dissolution of Nanocarbon–Cellulose Acetate Phthalate Microneedle Arrays

Anderson

Hegarty

Casimero

et al. 2019

ACS Appl. Mater. Interfaces

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Transdermal microneedles have captured the attention of researchers in relation to a variety of applications, and silicone-based molds required to produce these systems are now widely available and can be readily manufactured on the lab bench. The production of nanocomposite microneedle arrays through micromolding techniques is described. The formulation of nanoparticulate carbon along with pH sensitive cellulose acetate phthalate as a polymeric binder is shown to produce conductive microneedles whose swelling/dissolution properties can be controlled electrochemically. Through exploiting hydrogen evolution at the microneedle array, changes in local pH can induce swelling within the needle structure and could lay the foundations for a new approach to the smart device controlled delivery of therapeutic agents. The surface modification of the carbon needles with palladium and cysteine is critically assessed from sensing and drug delivery perspectives.

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Section: Resultsmentioning

confidence: 99%

Section: ■ Results and Discussionmentioning

confidence: 99%

Electrochemically Controlled Dissolution of Nanocarbon–Cellulose Acetate Phthalate Microneedle Arrays

Anderson

Hegarty

Casimero

et al. 2019

ACS Appl. Mater. Interfaces

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“…Therefore, the ongoing projects are still very attractive toward the development of new electrode materials with superior electrochemical behaviours 10‐12 . The carbon‐based electrode materials, including activated carbon, mesoporous carbon, carbon aerogel, carbon nanotubes (CNTs), and carbon foam, are frequently used because of their high surface area and good electrical and chemical properties 13‐16 . However, these types of electrode materials have their own limitations to be used as the energy storage systems.…”

Section: Introductionmentioning

confidence: 99%

Novel synthesis of layeredMoS₂/TiO₂/CNTnanocomposite as a potential electrode for high performance supercapacitor applications

Vinodhini

Xavier

2022

Intl J of Energy Research

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Summary This work is aimed to synthesize hybrid nanocomposite electrode materials for supercapacitor applications. The carbon nanotubes (CNTs) are incorporated into MoS2 as well as TiO2 to form different hybrid electrode materials such as MoS2/CNTs, TiO2/CNTs, and MoS2/TiO2/CNTs in an effort to improve the electrochemical performance. The resulting hybrid electrode materials are examined by SEM, TEM, XRD, XPS, and Raman studies. Cyclic voltammetry and galvanostatic charge‐discharge tests are used to evaluate the specific capacitance and charge‐discharge stability of the synthesized MoS2/TiO2/CNTs. Among the hybrid electrode materials investigated, the MoS2/TiO2/CNTs exhibits superior electrochemical performance with specific capacitance of 1252.57 mA h/g at a scan rate 20 mV/s as compared with MoS2/CNTs (810.53 mA h/g), TiO2/CNTs (607.10 mA h/g), and CNTs (204.35 mA h/g). All electrochemical tests were carried out in a solution of 1 M KOH. The Rct and Rf for the MoS2/TiO2/CNTs electrode were found to be 1.7 Ω.cm2 and 2.1 Ω.cm2, respectively, which were significantly lower than the corresponding Rct (40.2 Ω.cm2) and Rf (51.1 Ω.cm2) for the CNTs electrode, indicating that the MoS2/TiO2/CNTs has a significantly lower overall impedance, which could be one of the key factors responsible for the improved electrochemical performance of the MoS2/TiO2/CNTs. Moreover, this MoS2/TiO2/CNTs hybrid electrode displays good cycling stability with the capacitance retention of 98.83% after 10 000 cycles of charge‐discharge at 1 A/g. The energy density and power density of MoS2/TiO2/CNTs composites are found to be 757.80 Wh/kg and 4546.80 W/kg respectively.

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“…The efficiency of hydrogen production could be increased by water electrolysis at high temperatures (Doenitz et al, 1980;Ferrero et al, 2013;Petipas et al, 2013) with high activity electrodes (Demir et al, 2018;Li et al, 2014). Regarded as high activity electrode, stainless steel could be implemented in higher electrolysis temperatures.…”

Section: Discussionmentioning

confidence: 99%

Stainless Steel Cyclic Voltammograms in Dioscorea Opposita Flour Media

Louise

Marwati

Sulistyani

et al. 2021

Indonesian J. Sci. Technol

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Improving the efficiency of hydrogen gas production in the water electrolysis process draws great attention from many scholars. To improve the efficiency of the process and reduction in the cost, stainless steel has been widely implemented in the industrial water electrolysis process. Electrolyte modification is also one of the methods to improve the water electrolysis process. The study used Dioscorea opposita tuber flour as a media addition in an alkaline solution. The efficiency of water electrolysis was evaluated by cyclic voltammetry. The result showed that the activity of the electrode and energy consumption were increased with values of 29 and 23%, respectively, by adding 3 g of the media. However, no media addition showed the lowest energy consumption regarding overpotential value. In general, the Dioscorea opposita tuber flour tends to cover the electrode and reduce the activity. Moreover, the utilization of wastewater from Dioscorea opposita flour industry is still beneficial to produce hydrogen gas instead of using freshwater.

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Preparation, characterization and hydrogen production performance of MoPd deposited carbon felt/Mo electrodes

Cited by 27 publications

References 57 publications

Electrochemically Controlled Dissolution of Nanocarbon–Cellulose Acetate Phthalate Microneedle Arrays

Electrochemically Controlled Dissolution of Nanocarbon–Cellulose Acetate Phthalate Microneedle Arrays

Novel synthesis of layeredMoS₂/TiO₂/CNTnanocomposite as a potential electrode for high performance supercapacitor applications

Stainless Steel Cyclic Voltammograms in Dioscorea Opposita Flour Media

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Preparation, characterization and hydrogen production performance of MoPd deposited carbon felt/Mo electrodes

Cited by 27 publications

References 57 publications

Electrochemically Controlled Dissolution of Nanocarbon–Cellulose Acetate Phthalate Microneedle Arrays

Electrochemically Controlled Dissolution of Nanocarbon–Cellulose Acetate Phthalate Microneedle Arrays

Novel synthesis of layeredMoS2/TiO2/CNTnanocomposite as a potential electrode for high performance supercapacitor applications

Stainless Steel Cyclic Voltammograms in Dioscorea Opposita Flour Media

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Product

Resources

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Novel synthesis of layeredMoS₂/TiO₂/CNTnanocomposite as a potential electrode for high performance supercapacitor applications