Direct hydrazine fuel cells: A review

Serov, Alexey; Kwak, Chan

doi:10.1016/j.apcatb.2010.05.005

Cited by 376 publications

(219 citation statements)

References 71 publications

Supporting

Mentioning

218

Contrasting

Unclassified

Order By: Relevance

“…Liquid hydrazine is easily transferred and its oxidation offers relatively high power density with carbon-free products, making it a promising fuel for low temperature fuel cells. [14][15][16] Hydrazine is also important in the pharmaceutical industry, as a common starting material in the synthesis of many pharmaceutical compounds. 17,18 However, it is often a key impurity in pharmaceutical products, and its high toxicity has led to the development of (electrochemical) hydrazine sensors.…”

Section: Introductionmentioning

confidence: 99%

Voltammetric Scanning Electrochemical Cell Microscopy: Dynamic Imaging of Hydrazine Electro-oxidation on Platinum Electrodes

et al. 2015

View full text Add to dashboard Cite

(2015) Voltammetric scanning electrochemical cell microscopy : dynamic imaging of hydrazine electro-oxidation on platinum electrodes. Analytical Chemistry Permanent WRAP url: http://wrap.warwick.ac.uk/67791 Copyright and reuse:The Warwick Research Archive Portal (WRAP) makes this work of researchers of the University of Warwick available open access under the following conditions. Copyright © and all moral rights to the version of the paper presented here belong to the individual author(s) and/or other copyright owners. To the extent reasonable and practicable the material made available in WRAP has been checked for eligibility before being made available.Copies of full items can be used for personal research or study, educational, or not-forprofit purposes without prior permission or charge. Provided that the authors, title and full bibliographic details are credited, a hyperlink and/or URL is given for the original metadata page and the content is not changed in any way. Publisher's statement:This document is the Accepted Manuscript version of a Published Work that appeared in final form in Analytical Chemistry copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see link to Published Work, http://pubs.acs.org/page/policy/articlesonrequest/index.html]The version presented here may differ from the published version or, version of record, if you wish to cite this item you are advised to consult the publisher's version. Please see the 'permanent WRAP url' above for details on accessing the published version and note that access may require a subscription. Abstract:Voltammetric scanning electrochemical cell microscopy (SECCM) incorporates cyclic voltammetry measurements in the SECCM imaging protocol, by recording electrochemical currents in a wide potential window at each pixel in a map. This provides much more information compared to traditional fixed potential imaging. Data can be represented as movies (hundreds of frames) of current (over a surface region) at a series of potentials and are highly revealing of subtle variations in electrode activity. Furthermore, by combining SECCM data with other forms of microscopy, e.g. scanning electron microscopy and electron backscatter diffraction data, it is possible to directly relate the current-voltage characteristics to spatial position and surface structure. In this work we use a 'hopping mode', where the SECCM pipet probe is translated towards the surface at a series of positions until meniscus contact. Small amounts of residue left on the surface, upon probe retraction, demark the precise area of each measurement. We use these techniques to study hydrazine oxidation on a polycrystalline platinum substrate in air and in a deaerated environment. In both cases, the detected faradaic current shows a structural dependence on the surface crystallographic orientation. Significantly, in the presence of oxygen (aerated solution) the electrochemical current decreases strongly for alm...

show abstract

Section: Introductionmentioning

confidence: 99%

Voltammetric Scanning Electrochemical Cell Microscopy: Dynamic Imaging of Hydrazine Electro-oxidation on Platinum Electrodes

et al. 2015

View full text Add to dashboard Cite

show abstract

“…Thus, the need for a low-cost but efficient electrocatalyst for hydrazine oxidation is essential for the further development of hydrazine-based direct liquid fuel cells. 3 In response, various earth-abundant low-cost metallic catalysts have been extensively explored by various research groups around the globe, but these catalysts suffer from poor stability due to the formation of inactive oxide layers on their surfaces during or before the oxidation step of hydrazine. 4 On the other hand, carbon-based nanomaterials (graphene, carbon nanotubes and mesoporous carbon) present a solution to these issues partially because of their stability in strongly alkaline and acidic conditions.…”

Section: Introductionmentioning

confidence: 99%

Superaerophobic graphene nano-hills for direct hydrazine fuel cells

et al. 2017

View full text Add to dashboard Cite

Hydrazine fuel-cell technology holds great promise for clean energy, not only because of the greater energy density of hydrazine compared to hydrogen but also due to its safer handling owing to its liquid state. However, current technologies involve the use of precious metals (such as platinum) for hydrazine oxidation, which hinders the further application of hydrazine fuel-cell technologies. In addition, little attention has been devoted to the management of gas, which tends to become stuck on the surface of the electrode, producing overall poor electrode efficiencies. In this study, we utilized a nano-hill morphology of vertical graphene, which efficiently resolves the issue of the accumulation of gas bubbles on the electrode surface by providing a nano-rough-edged surface that acts as a superaerophobic electrode. The growth of the vertical graphene nano-hills was achieved and optimized by a scalable plasma-enhanced chemical vapor deposition method. The resulting metal-free graphene-based electrode showed the lowest onset potential (−0.42 V vs saturated calomel electrode) and the highest current density of all the carbon-based materials reported previously for hydrazine oxidation.

show abstract

“…Therefore perfect zero emission equal to a pure hydrogen fuel can be realized [10]. The absence of carbon atom in hydrazine leads to zero production of species that may poison the electrocatalysts [11]. Compared with ethanol, methanol, hydrogen and V 2+ , hydrazine has a higher overall theoretical open circuit potential and maximum efficiency as indicated in Table1.…”

Section: Introductionmentioning

confidence: 97%

Electrochemical Oxidation of Hydrazine in Membraneless Fuel Cells

Durga

Ponmani

Kiruthika

et al. 2014

Journal of Electrochemical Science and Technology

View full text Add to dashboard Cite

This paper describes the continuous flow operation of membraneless sodium perborate fuel cell using acid/alkaline bipolar electrolyte. Here, hydrazine is used as a fuel and sodium perborate is used as an oxidant under Alkaline-acid media configuration. Sodium perborate affords hydrogen peroxide in aqueous medium. In our operation, the laminar flow based microfluidic membranleless fuel cell achieved a maximum power density of 27.2 mW cm −2 when using alkaline hydrazine as the anolyte and acidic perborate as the catholyte at room temperature with a fuel mixture flow rate of 0.3 mL min -1. The simple planar structured membraneless sodium perborate fuel cell enables high design flexibility and easy integration of the microscale fuel cell into actual microfluidic systems and portable power applications.

show abstract

Direct hydrazine fuel cells: A review

Cited by 376 publications

References 71 publications

Voltammetric Scanning Electrochemical Cell Microscopy: Dynamic Imaging of Hydrazine Electro-oxidation on Platinum Electrodes

Voltammetric Scanning Electrochemical Cell Microscopy: Dynamic Imaging of Hydrazine Electro-oxidation on Platinum Electrodes

Superaerophobic graphene nano-hills for direct hydrazine fuel cells

Electrochemical Oxidation of Hydrazine in Membraneless Fuel Cells

Contact Info

Product

Resources

About