A Novel Approach Towards Carbon–Ru Electrodes with Mesoporosity for Supercapacitors

Cui, Guanglei; Zhi, Linjie; Thomas, Arne; Lieberwirth, Ingo; Kolb, Ute; Müllen, Kläus

doi:10.1002/cphc.200600789

Cited by 15 publications

(9 citation statements)

References 24 publications

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“…Composite electrodes combining hydrous RuO 2 and porous carbon can increase effectively the specific capacitance and improve the rate performance compared to pure porous carbon 214. 215 A Ru/C electrode with mesoporosity has been prepared by a simple one‐step pyrolysis procedure with dichlorobis(μ‐chloro)bis[(1‐3‐η:6‐8‐)‐2,7‐dimethyloctadienediyl] diruthenium(IV) (DDRu) as precursor 216. After electro‐oxidization of the Ru nanoparticles to hydrous RuO 2 in sulfuric acid, a capacitance of 132 F g −1 was obtained.…”

Section: Supercapacitorsmentioning

confidence: 99%

Nanostructured Carbon and Carbon Nanocomposites for Electrochemical Energy Storage Applications

2010

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Introduction An area of research that may produce a viable replacement to fossil fuels is the use of hydrogen. Compared to fossil fuels, hydrogen has a higher energy density (142 MJ kg-1 versus an average 42 MJ kg-1) and, when used in a simple combustion system with lean air mixtures, water is the only byproduct. 1 When hydrogen is used in a fuel cell, the overall efficiency can be upwards of 50% compared to 25% in a simple combustion system. 1 When the hydrogen is produced from a non-hydrocarbon source it has no polluting effects. 1 Systems that utilise, store and produce hydrogen are key to implementing a future hydrogen-based economy. Carbon nanotubes (CNTs) are one of the most versatile materials in current nanotechnological research. In the field of energy generation and storage, which includes research in solar cells, fuel cells and batteries (specifically lithium-ion), CNTs have shown a marked improvement over conventional systems. 2 In addition, there are several reports of CNTs utilised in a variety of disciplines, including biomedicine, 3 polymer science, 2 catalysis, 4 chemical and biological analytical sciences, as well as nano-electronic device applications. 2-4 We synthesised nanostructured materials, elucidated their structure, and studied their properties and applications. This paper summarises our past and ongoing efforts in the use of CNTs in hydrogen-based energy systems.

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Section: Supercapacitorsmentioning

confidence: 99%

Nanostructured Carbon and Carbon Nanocomposites for Electrochemical Energy Storage Applications

2010

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“…17 Previous fabrication methods of RuO x supercapacitors include solutionbased deposition from ruthenium trichloride (RuCl 3 ) [18][19][20][21] and ruthenium nitrosyl nitrate, 22 however these methods oen result in poor uniformity of the RuO x coating. Other fabrication methods include magnetic sputtering, 23 electro-oxidation of Ru nanoparticles, 24 and mixing of RuO 2 -xH 2 O particles with a polymer binding agent. 25 These approaches yield poor electron conductivity, low utilization of RuO x due to non-uniformly dispersed nanoparticles or lms, and low proton conductivity due to poor hydration in the case of non-solution methods.…”

Section: Introductionmentioning

confidence: 99%

Highly active ruthenium oxide coating via ALD and electrochemical activation in supercapacitor applications

et al. 2015

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“…As for pseudocapacitance based supercapacitors, the most commonly investigated classes of pseudocapacitive materials are transition metal oxides (notably, ruthenium oxide250) and conducting polymers (CPs)251–253 (polyaniline, polypyrrole, or derivatives of polythiophene, etc.). However, chemically prepared, nanostructured CPs, including polyaniline nanofibers, are usually powdery and insulating in their de‐doped states 254, 255.…”

Section: Energy‐related Applications Of Graphene‐based Nanomaterialsmentioning

confidence: 99%

Chemical Approaches toward Graphene‐Based Nanomaterials and their Applications in Energy‐Related Areas

Luo

Liu

Zhi

2011

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A 'gold rush' has been triggered all over the world for exploiting the possible applications of graphene-based nanomaterials. For this purpose, two important problems have to be solved; one is the preparation of graphene-based nanomaterials with well-defined structures, and the other is the controllable fabrication of these materials into functional devices. This review gives a brief overview of the recent research concerning chemical and thermal approaches toward the production of well-defined graphene-based nanomaterials and their applications in energy-related areas, including solar cells, lithium ion secondary batteries, supercapacitors, and catalysis.

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A Novel Approach Towards Carbon–Ru Electrodes with Mesoporosity for Supercapacitors

Cited by 15 publications

References 24 publications

Nanostructured Carbon and Carbon Nanocomposites for Electrochemical Energy Storage Applications

Nanostructured Carbon and Carbon Nanocomposites for Electrochemical Energy Storage Applications

Highly active ruthenium oxide coating via ALD and electrochemical activation in supercapacitor applications

Chemical Approaches toward Graphene‐Based Nanomaterials and their Applications in Energy‐Related Areas

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