Preparation and electrochemical characterizations of MnO2-dispersed carbon aerogel as supercapacitor electrode material

Lv, Guifen; Wu, Dehai; Fu, Ruowen

doi:10.1016/j.jnoncrysol.2009.08.035

Cited by 28 publications

(17 citation statements)

References 17 publications

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“…[19] Bulk-MnO x materials may suffer from low conductivity, but were shown to work in form of thin films deposited on conductive substrates [13] or as composites mixed with low amounts of carbon to improve conductivity. [20,21] Supported nanostructured MnO x clusters [22] and MnO x -nanorods [23] have also been applied as OER catalysts in neutral or alkaline solutions.…”

Section: Introductionmentioning

confidence: 99%

Nanostructured Manganese Oxide Supported on Carbon Nanotubes for Electrocatalytic Water Splitting

et al. 2012

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Incipient wetness impregnation and a novel deposition symproportionation precipitation were used for the preparation of MnOx/CNT electrocatalysts for efficient water splitting. Nanostructured manganese oxides have been dispersed on commercial carbon nanotubes as a result of both preparation methods. A strong influence of the preparation history on the electrocatalytic performance was observed. The as-prepared state of a 6.5 wt. % MnOx/CNT sample could be comprehensively characterized by comparison to an unsupported MnOx reference sample. Various characterization techniques revealed distinct differences in the oxidation state of the Mn centers in the as-prepared samples as a result of the two different preparation methods. As expected, the oxidation state is higher and near +4 for the symproportionated MnOx compared to the impregnated sample, where +2 was found. In both cases an easy adjustability of the oxidation state of Mn by post-treatment of the catalysts was observed as a function of oxygen partial pressure and temperature. Similar adjustments of the oxidation state are also expected to happen under water splitting conditions. In particular, the 5 wt. % MnO/CNT sample obtained by conventional impregnation was identified as a promising catalytic anode material for water electrolysis at neutral pH showing high activity and stability. Importantly, this catalytic material is comparable to state-of-art MnOx catalyst operating in strongly alkaline solutions and, therefore, offers advantages for hydrogen production from waste and sea water under neutral, hence, environmentally benign conditions

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Section: Introductionmentioning

confidence: 99%

Nanostructured Manganese Oxide Supported on Carbon Nanotubes for Electrocatalytic Water Splitting

et al. 2012

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“…Based on the above discussions, the specific capacitance of CNT/MC/MnO 2 hybrid network is not only better than the reported carbonaceous electrodes, such as CNTs (180 F g −1 ), graphene nanosheets (175 F g −1 ) [21,22], and CNT/MC networks (210 F g −1 ), but also superior to most of other carbon/MnO 2 composites, such as MnO 2 /carbon aerogel Journal of Nanomaterials (219 F g −1 ) and grapheme/MnO 2 (310 F g −1 ) [23,24]. Pure MnO 2 always exhibits high specific capacitance; however, the poor conductivity of MnO 2 results in low rate capability for high power performance.…”

Section: Resultsmentioning

confidence: 83%

Functional Carbon Nanotube/Mesoporous Carbon/MnO₂ Hybrid Network for High‐Performance Supercapacitors

Tao

Zhang

Jiang

et al. 2014

Journal of Nanomaterials

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A functional carbon nanotube/mesoporous carbon/MnO2hybrid network has been developed successfully through a facile route. The resulting composites exhibited a high specific capacitance of 351 F/g at 1 A g−1, with intriguing charge/discharge rate performance and cycling stability due to a synergistic combination of large surface area and excellent electron-transport capabilities of MnO2with the good conductivity of the carbon nanotube/mesoporous carbon networks. Such composite shows great potential to be used as electrodes for supercapacitors.

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“…The enhanced stability, high conductivity, and improved capacitance of transition metal oxide-based carbon aerogel supercapacitors attracted the attention of various researchers [123]. Using a liquid phase coprecipitation technique, amorphous carbon aerogels loaded with dispersed MnO 2 nanoparticles were synthesized as a supercapacitor electrode material [123].…”

Section: Aerogels As Energy Storage Devicesmentioning

confidence: 99%

Applications of Aerogels and Their Composites in Energy-Related Technologies

Ülker

Şanlı

Erkey

2014

Supercritical Fluid Technology for Energy and Environmental Applications

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Preparation and electrochemical characterizations of MnO2-dispersed carbon aerogel as supercapacitor electrode material

Cited by 28 publications

References 17 publications

Nanostructured Manganese Oxide Supported on Carbon Nanotubes for Electrocatalytic Water Splitting

Nanostructured Manganese Oxide Supported on Carbon Nanotubes for Electrocatalytic Water Splitting

Functional Carbon Nanotube/Mesoporous Carbon/MnO₂ Hybrid Network for High‐Performance Supercapacitors

Applications of Aerogels and Their Composites in Energy-Related Technologies

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Preparation and electrochemical characterizations of MnO2-dispersed carbon aerogel as supercapacitor electrode material

Cited by 28 publications

References 17 publications

Nanostructured Manganese Oxide Supported on Carbon Nanotubes for Electrocatalytic Water Splitting

Nanostructured Manganese Oxide Supported on Carbon Nanotubes for Electrocatalytic Water Splitting

Functional Carbon Nanotube/Mesoporous Carbon/MnO2 Hybrid Network for High‐Performance Supercapacitors

Applications of Aerogels and Their Composites in Energy-Related Technologies

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Product

Resources

About

Functional Carbon Nanotube/Mesoporous Carbon/MnO₂ Hybrid Network for High‐Performance Supercapacitors