Highly durable direct hydrazine hydrate anion exchange membrane fuel cell

Sakamoto, Tsunenori; Serov, Alexey; Masuda, Teruyuki; Kawamura, Masaki; Yoshimoto, Koji; Omata, Takuya; Kishi, Hirofumi; Yamaguchi, Susumu; Hori, Akihiro; Horiuchi, Yousuke; Terada, Tomoaki; Artyushkova, Kateryna; Atanassov, Plamen; Tanaka, Hiroyuki

doi:10.1016/j.jpowsour.2017.05.052

Cited by 29 publications

(19 citation statements)

References 34 publications

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“…Hydrazine is widely employed in the chemical and pharmaceutical industries, [1] and waste water containing hydrazine is carcinogenic and toxic. [2][3] Therefore, hydrazine-assisted water electrolyzers can allow the conversion of hydrazine into molhydrogen and nitrogen, thus offering a potential pathway for hazard removal while at the same time achieving green hydrogen production. Although catalytic hydrazine decomposition has also been studied, [4][5] the hydrazine-assisted water electrolyzer offers the advantage of producing hydrogen in the cathode compartment without the need for nitrogen separation, and has attracted considerable recent interests.…”

Section: Introductionmentioning

confidence: 99%

Bifunctional Ultrathin RhRu_0.5‐Alloy Nanowire Electrocatalysts for Hydrazine‐Assisted Water Splitting

Cheng

Wan

et al. 2023

Advanced Materials

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Hydrazine‐assisted water electrolysis offers a feasible path for low‐voltage green hydrogen production. Herein, the design and synthesis of ultrathin RhRu0.5‐alloy wavy nanowires as bifunctional electrocatalysts for both the anodic hydrazine oxidation reaction (HzOR) and the cathodic hydrogen evolution reaction (HER) is reported. It is shown that the RhRu0.5‐alloy wavy nanowires can achieve complete electrooxidation of hydrazine with a low overpotential and high mass activity, as well as improved performance for the HER. The resulting RhRu0.5 bifunctional electrocatalysts enable, high performance hydrazine‐assisted water electrolysis delivering a current density of 100 mA cm−2 at an ultralow cell voltage of 54 mV and a high current density of 853 mA cm−2 at a cell voltage of 0.6 V. The RhRu0.5 electrocatalysts further demonstrate a stable operation at a high current density of 100 mA cm−2 for 80 hours of testing period with little irreversible degradation. The overall performance greatly exceeds that of the previously reported hydrazine‐assisted water electrolyzers, offering a pathway for efficiently converting hazardous hydrazine into molecular hydrogen.

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Section: Introductionmentioning

confidence: 99%

Bifunctional Ultrathin RhRu_0.5‐Alloy Nanowire Electrocatalysts for Hydrazine‐Assisted Water Splitting

Cheng

Wan

et al. 2023

Advanced Materials

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“…The nonacidic environment of AEMFCs allows the use of nonprecious metal catalysts, which intensely reduces the cost per kilowatt of power of fuel cell devices . In spite of the latest technological progress related to electrocatalysts and to the understanding of carbonation issues, one of the main remaining challenges in the AEMFCs is the availability of good, stable anion conducting membranes that enable the hydroxide anion and water conduction through the polymeric network, both as an anion exchange membrane (AEM) and as anion exchange ionomers (AEIs).…”

Section: Introductionmentioning

confidence: 99%

Electrospun Ionomeric Fibers with Anion Conducting Properties

Mann‐Lahav

Halabi

Shter

et al. 2019

Adv Funct Materials

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Anion conductive nanofiber mats from FAA-3 ionomers are obtained by electrospinning. Depending on the solvent used in the precursor solution, nanofibers with either nonhollow cylindrical or flat ribbon-like cross-sections are prepared. The anion conductivity and water uptake of the ionomeric nanofiber mats are measured as a function of the relative humidity in the 10-90% range and compared to that of a solid membrane cast from the same ionomer. In addition, the anion conductivity of an isolated single fiber of the ionomer is measured for the first time. The anion conductivity of the electrospun single fiber is found to be higher than that of the mats, which is, in turn, one order of magnitude higher than that of the solid ionomer membrane. The higher conductivity of the mats relative to the solid membrane (in both inplane and through-plane directions) is found to be related to the variation in water uptake, which stems from the morphological distinctions. These results increase the understanding of the electrospinning process of ionomers, toward the development and design of new anion conductive ionomer fibers, useful for high performance electrochemical devices.

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“…However, there are critical issues associated with the proton exchange membrane configuration owing to high cost of membranes and Pt catalysts as well as difficulties in hydrogen storage. [1,233] Moreover, the utilization of hydrogen requires high-pressure vessels and thus advanced infrastructures. All these factors increase the overall cost of the resulting vehicle and reduce the driving range.…”

Section: Performance Of Ni-based Anode Catalysts In Dhzfcsmentioning

confidence: 99%

Development Trends on Nickel‐Based Electrocatalysts for Direct Hydrazine Fuel Cells

2020

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Low temperature hydrazine fuel cells have been advocated as potential energy carriers by virtue of their exceptional power densities and carbon free containing byproducts. However, the large‐scale application of these renewable energy systems has been extremely inhibited by the insufficient performance and high cost of the state‐of‐art platinum (Pt) catalysts. To pursue better activity, electrocatalysts must demonstrate low operating overpotentials and high tolerances to poisoning species, which are critical factors for increasing the energy conversion efficiency. Despite the tremendous progress of Pt‐based catalysts, controlling sluggish kinetics on microscopic surfaces is still a serious issue because the accumulation of reaction product slugs onto surface may impede the liquid fuel transport to catalytic sites, resulting in a low activity. Thus, the development of earth abundant electrocatalysts with an improved activity is unambiguously a principal requirement. In this review, recent trends in the rational design and synthesis of Ni‐based electrocatalysts with various compositions for hydrazine oxidation reaction (HzOR) are summarized. In particular, development of multicomponent compounds and employment of Ni‐based materials for HzOR are demonstrated to be effective approaches from tuning the electrochemical performance of Ni‐based catalyst materials. Moreover, some potential challenges and prospects are deliberated to further advance the improvement of Ni‐based materials for effective HzOR.

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Highly durable direct hydrazine hydrate anion exchange membrane fuel cell

Cited by 29 publications

References 34 publications

Bifunctional Ultrathin RhRu_0.5‐Alloy Nanowire Electrocatalysts for Hydrazine‐Assisted Water Splitting

Bifunctional Ultrathin RhRu_0.5‐Alloy Nanowire Electrocatalysts for Hydrazine‐Assisted Water Splitting

Electrospun Ionomeric Fibers with Anion Conducting Properties

Development Trends on Nickel‐Based Electrocatalysts for Direct Hydrazine Fuel Cells

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Highly durable direct hydrazine hydrate anion exchange membrane fuel cell

Cited by 29 publications

References 34 publications

Bifunctional Ultrathin RhRu0.5‐Alloy Nanowire Electrocatalysts for Hydrazine‐Assisted Water Splitting

Bifunctional Ultrathin RhRu0.5‐Alloy Nanowire Electrocatalysts for Hydrazine‐Assisted Water Splitting

Electrospun Ionomeric Fibers with Anion Conducting Properties

Development Trends on Nickel‐Based Electrocatalysts for Direct Hydrazine Fuel Cells

Contact Info

Product

Resources

About

Bifunctional Ultrathin RhRu_0.5‐Alloy Nanowire Electrocatalysts for Hydrazine‐Assisted Water Splitting

Bifunctional Ultrathin RhRu_0.5‐Alloy Nanowire Electrocatalysts for Hydrazine‐Assisted Water Splitting