Ag/C nanoparticles as an cathode catalyst for a zinc-air battery with a flowing alkaline electrolyte

Han, Jia-Jun; Li, Ning; Zhang, Tian-Yun

doi:10.1016/j.jpowsour.2009.02.082

Cited by 120 publications

(88 citation statements)

References 18 publications

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“…LSV contrast curves of three catalysts are shown in Fig. 4d, NCN-Co-0.1 displays the same onset potential (E 0 ) and higher current density than NCN and Pt/C, and the half-wave potential (E 1/2 ) of NCN-Co-0.1 is much more positive (35 mV) than that of Pt/C, further demonstrating the excellent electrocatalytic activity of NCN-Co-0.1 for ORR in alkaline electrolyte, promising its great potential as a cheap but efficient electrocatalyst for practical applications in alkaline fuel cells or Li/Zn air batteries [46,47]. The ORR mechanisms of NCN-Co-0.1 were probed by means of diffusion-corrected Tafel plots derived from the LSV data (Fig.…”

Section: Resultsmentioning

confidence: 99%

Facile synthesis of N-doped carbon nanosheet-encased cobalt nanoparticles as efficient oxygen reduction catalysts in alkaline and acidic media

Zhao

Pan

et al. 2016

Ionics

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In this work, a low-cost, high-performance, and environmentally friendly non-precious-metal catalyst was fabricated via a simple pyrolysis of the corn starch, dicyandiamide, and cobalt acetate for the oxygen reduction reaction (ORR). Scanning electron microscope (SEM) and transmission electron microscopy (TEM) images show that the catalyst has porous and graphene-like carbon nanosheetencased metal nanoparticles structure. Electrochemical measurements show that, compared to the commercial Pt/C catalysts, the catalyst has a low overpotential, larger current density, and better methanol tolerance ability for ORR in both alkaline and acidic media, which may be attributed to the incorporation of Co-Nx moieties and Co nanoparticles. The transferred number of electrons during the ORR with the catalyst was calculated to be ∼3.9 in alkaline media (∼3.7 in acidic media), indicating that the product would be a promising non-noble cathode catalyst in alkaline and acidic fuel cells or Li/Zn air batteries.

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Section: Resultsmentioning

confidence: 99%

Facile synthesis of N-doped carbon nanosheet-encased cobalt nanoparticles as efficient oxygen reduction catalysts in alkaline and acidic media

Zhao

Pan

et al. 2016

Ionics

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“…Using cyclic voltammetry and a rotating disk electrode (RDE), they found that the direct four electron pathways were preferred by larger Ag particles (174 nm), and that simultaneous four electron and peroxide two-electron pathways were preferred by fi ner Ag particles (4.1 nm). [ 186 ] Recently, graphene has been used as an ORR catalyst without metal. Qu et al showed that nitrogen-doped graphene (N-graphene) has much better activity than platinum for ORR via the four electron pathway in alkaline solution; it also has long-term operation stability.…”

Section: Catalystsmentioning

confidence: 99%

Metal–Air Batteries with High Energy Density: Li–Air versus Zn–Air

Lee

Kim

Cao

et al. 2010

Advanced Energy Materials

1,963

1,216

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In the past decade, there have been exciting developments in the fi eld of lithium ion batteries as energy storage devices, resulting in the application of lithium ion batteries in areas ranging from small portable electric devices to large power systems such as hybrid electric vehicles. However, the maximum energy density of current lithium ion batteries having topatactic chemistry is not suffi cient to meet the demands of new markets in such areas as electric vehicles. Therefore, new electrochemical systems with higher energy densities are being sought, and metal-air batteries with conversion chemistry are considered a promising candidate. More recently, promising electrochemical performance has driven much research interest in Li-air and Zn-air batteries. This review provides an overview of the fundamentals and recent progress in the area of Li-air and Zn-air batteries, with the aim of providing a better understanding of the new electrochemical systems.

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“…Han et al reported that 20% Ag/C with an average particle size of 174 and 4.1 nm show four-and two-electron transfer, respectively, for oxygen reduction reaction [14]. Guo et al investigated the effect of metal loading of carbon-supported Ag in half-cell mode and showed that 60% Ag/C has better kinetic activity than 10%, 20%, and 40% [15].…”

Section: Introductionmentioning

confidence: 99%

Carbon-Supported Silver as Cathode Electrocatalyst for Alkaline Polymer Electrolyte Membrane Fuel Cells

2011

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Carbon-supported silver in varying percentage viz. 40%, 60%, and 80% (Ag/C) is prepared by sodium citrate protecting method. The structure, dispersion, electrochemical characterization, and surface area and oxygen reduction reaction pathway of Ag/C are determined by XRD, TEM, CV, and LSV, respectively. The catalyst is evaluated for its electrocatalytic activity towards oxygen reduction reaction (ORR) in alkaline polymer electrolyte membrane fuel cells (APEMFCs); 60% Ag/C gives higher performance than 40%, and 80% Ag/C. Metal loading on cathode is optimized through the cell polarization studies using 60% Ag/C. A peak power density of 10 mW/cm 2 is obtained for APEMFC single cell comprising 60% Ag/C and 38% Pt/C as cathode and anode catalysts, respectively.

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Ag/C nanoparticles as an cathode catalyst for a zinc-air battery with a flowing alkaline electrolyte

Cited by 120 publications

References 18 publications

Facile synthesis of N-doped carbon nanosheet-encased cobalt nanoparticles as efficient oxygen reduction catalysts in alkaline and acidic media

Facile synthesis of N-doped carbon nanosheet-encased cobalt nanoparticles as efficient oxygen reduction catalysts in alkaline and acidic media

Metal–Air Batteries with High Energy Density: Li–Air versus Zn–Air

Carbon-Supported Silver as Cathode Electrocatalyst for Alkaline Polymer Electrolyte Membrane Fuel Cells

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