Oxygen reduction on high-area carbon cloth-supported oxide nanoparticles/polypyrrole composite electrodes

Shao, Yong; Cong, Hongbo

doi:10.1016/j.ssi.2007.08.004

Cited by 8 publications

(7 citation statements)

References 24 publications

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“…Conductive polymers such as polypyrrole (PPy), polyaniline (PANI), polythiophen (PTh), poly(3-methyl)thiophen (PMeT), as well as poly(3,4-ethylenedioxythiophene) (PEDOT) characteristically display mixed metal and polymer like properties and are considered ideal for many applications due to their low cost, high electronic conductivity and distinct redox properties. [180][181][182] Recently, conductive polymers have been also investigated for application towards non-precious ORR electrocatalysis in three different ways: (i) utilizing conductive polymers as ORR electrocatalysts on their own, 180,[182][183][184] (ii) incorporating nonprecious metal complexes into the conductive polymer matrix, 180,182,[184][185][186][187][188][189][190][191][192][193] and (iii) employing conductive polymers as a nitrogen/carbon precursor material for pyrolyzed M-N x /C catalysts. 66,68,128,[194][195][196]…”

Section: Conductive Polymersmentioning

confidence: 99%

“…Similar experiments were carried out with carbon cloth supported transition metal oxides encapsulated coated in PPy. 191 It was found that copper manganese oxide particles could display some ORR activity with significant stability, with PPy considered a protective electron conducting shell rather than the catalytically active material.…”

Section: Incorporation Of Transition Metals Into Conductive Polymers ...mentioning

confidence: 99%

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A review on non-precious metal electrocatalysts for PEM fuel cells

Chen

Higgins

et al. 2011

Energy Environ. Sci.

1,726

1,140

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Section: Conductive Polymersmentioning

confidence: 99%

Section: Incorporation Of Transition Metals Into Conductive Polymers ...mentioning

confidence: 99%

A review on non-precious metal electrocatalysts for PEM fuel cells

Chen

Higgins

et al. 2011

Energy Environ. Sci.

1,726

1,140

View full text Add to dashboard Cite

“…Spinel hybrids have also been obtained with precipitation methods. ,− Introducing the templates will generate pores after removing the templates . NiCo 2 O 4 nanosheets on CNTs were acquired by dissolving Ni(NO 3 ) 2 ·6H 2 O and Co(NO 3 ) 2 ·6H 2 O in water with PVP.…”

Section: Preparationmentioning

confidence: 99%

Spinels: Controlled Preparation, Oxygen Reduction/Evolution Reaction Application, and Beyond

et al. 2017

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Spinels with the formula of ABO (where A and B are metal ions) and the properties of magnetism, optics, electricity, and catalysis have taken significant roles in applications of data storage, biotechnology, electronics, laser, sensor, conversion reaction, and energy storage/conversion, which largely depend on their precise structures and compositions. In this review, various spinels with controlled preparations and their applications in oxygen reduction/evolution reaction (ORR/OER) and beyond are summarized. First, the composition and structure of spinels are introduced. Then, recent advances in the preparation of spinels with solid-, solution-, and vapor-phase methods are summarized, and new methods are particularly highlighted. The physicochemical characteristics of spinels such as their compositions, structures, morphologies, defects, and substrates have been rationally regulated through various approaches. This regulation can yield spinels with improved ORR/OER catalytic activities, which can further accelerate the speed, prolong the life, and narrow the polarization of fuel cells, metal-air batteries, and water splitting devices. Finally, the magnetic, optical, electrical, and catalytic applications beyond the OER/ORR are also discussed. The future applications of spinels are considered to be closely related to environmental and energy issues, which will be aided by the development of new species with precise preparations and advanced characterizations.

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“…Discovery of intrinsically conducting polymers leads to enormous investigation of their physical, optical, and electrical properties to explore new paradigm of organic‐based electronic applications 1–3. Conducting polymers‐based few devices such as organic light‐emitting diode, radiofrequency identification tag, and field effect transistor have been commercialized, whereas its numerous prosperities such as p‐n junctions, Schottky devices, gas sensors, photovoltaic devices, supercapacitors, air electrodes, and actuators have been widely reported in literature 4–7. Properties of conducting polymers such as polypyrrole (PPY), polythiophenes, polyaniline, polyparaphenylene vinylene, polyfuran, polyvinylcarbazole, and polyindole are governed by the type of anions used, concentration of monomers, temperature of synthesis, nature of solvent, and so forth 8, 9.…”

Section: Introductionmentioning

confidence: 99%

DC electrical conduction and morphological behavior of counter anion‐governed genesis of electrochemically synthesized polypyrrole films

Singh

Kumar

Agarwal

et al. 2011

J Polym Sci B Polym Phys

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Highly conducting polypyrrole (PPY) films, doped with various anions [pTS À , ClO 4 À , and NO 3 À and mixed electrolyte system (pTS À þ ClO 4 À )], have been electrochemically synthesized in aqueous solution at $275 K in an inert atmosphere. PPY exhibits metallic order dc conductivity at room temperature and shows variation of conductivity with respect to time of polymerization. Effect of dopant anion on growth mechanism of PPY is evident from its surface morphology. X-ray photoelectron spectroscopy (XPS), used to examine the surface composition and doping level of various PPY films, confirms the anionic doping into the polymer backbone. Both XPS and ultraviolet-visible spectroscopy give evidence of formation of polarons and bipolarons. The temperature (4.2-320 K)-dependent dc conductivity data of these PPY films have been explained by Mott's 3D variable-range hopping conduction model. Mott's parameters have been estimated, and structural disorder with doping is correlated for all the samples. Mott's criterion for distant hopping sites prevails in case of moderately doped samples (PPY3, PPY4, and PPY5), whereas the hopping to nearest neighbor sites is found more suitable in case of highly doped samples (PPY1 and PPY2). The origin of these changes is due to the modification in the molecular structure of PPY, which is governed by different growth mechanisms for organic (pTS À ) and inorganic (ClO 4 À and NO 3 À ) counter anions. V C 2011 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 50: 347-360, 2012

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Oxygen reduction on high-area carbon cloth-supported oxide nanoparticles/polypyrrole composite electrodes

Cited by 8 publications

References 24 publications

A review on non-precious metal electrocatalysts for PEM fuel cells

A review on non-precious metal electrocatalysts for PEM fuel cells

Spinels: Controlled Preparation, Oxygen Reduction/Evolution Reaction Application, and Beyond

DC electrical conduction and morphological behavior of counter anion‐governed genesis of electrochemically synthesized polypyrrole films

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