Preparation and Properties of Manganese Oxide/Carbon Composites by Reduction of Potassium Permanganate with Acetylene Black

Huang, Xingkang; Yue, Hongjun; Attia, Adel; Yang, Yong

doi:10.1149/1.2388741

Cited by 68 publications

(56 citation statements)

References 29 publications

(31 reference statements)

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“…This in-situ redox deposition process is simple and scalable for preparation of MnO 2 /carbon composites, thus immediately attracts research attentions [76,233e243]. However, the earlier studies are mostly focused on synthesis of powder composite materials via the reduction of MnO À 4 ions in aqueous dispersions of carbon nanomaterials, such as acetylene black [235,236,240], templated mesoporous carbon [233,234,241,243], CNTs [237e240,242], and graphene [76].…”

Section: In-situ Redox Depositionmentioning

confidence: 99%

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Materials and fabrication of electrode scaffolds for deposition of MnO2 and their true performance in supercapacitors

Cao

Wang

et al. 2015

Journal of Power Sources

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Section: In-situ Redox Depositionmentioning

confidence: 99%

“…In a neutral pH solution, the in-situ redox reaction between MnO À 4 precursor and carbon substrate occurs as [236]:…”

Section: In-situ Redox Depositionmentioning

confidence: 99%

Materials and fabrication of electrode scaffolds for deposition of MnO2 and their true performance in supercapacitors

Cao

Wang

et al. 2015

Journal of Power Sources

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“…In this case, carbon is a sacrificial reductant, and undergoes a self-limiting reaction with aqueous KMnO 4 to form a decoration of MnO x on the surface (i.e., 4KMnO 4 + 3C + 2H 2 O → 4MnO 2 + 3CO 2 + 4KOH) [208]. We then loaded gold onto the MnO x /C support via deposition-precipitation [80].…”

Section: Pre-modification Of Carbon Supportsmentioning

confidence: 99%

Development of novel supported gold catalysts: A materials perspective

2010

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Since Haruta et al. discovered that small gold nanoparticles finely dispersed on certain metal oxide supports can exhibit surprisingly high activity in CO oxidation below room temperature, heterogeneous catalysis by supported gold nanoparticles has attracted tremendous attention. The majority of publications deal with the preparation and characterization of conventional gold catalysts (e.g., Au/TiO 2 ), the use of gold catalysts in various catalytic reactions, as well as elucidation of the nature of the active sites and reaction mechanisms. In this overview, we highlight the development of novel supported gold catalysts from a materials perspective. Examples, mostly from those reported by our group, are given concerning the development of simple gold catalysts with single metal-support interfaces and heterostructured gold catalysts with complicated interfacial structures. Catalysts in the first category include active Au/SiO 2 and Au/metal phosphate catalysts, and those in the second category include catalysts prepared by pre-modification of supports before loading gold, by post-modification of supported gold catalysts, or by simultaneous dispersion of gold and an inorganic component onto a support. CO oxidation has generally been employed as a probe reaction to screen the activities of these catalysts. These novel gold catalysts not only provide possibilities for applied catalysis, but also furnish grounds for fundamental research.

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“…MnO 2 is currently considered as one of the most promising redox components for supercapacitor applications owning to its high capacitance, low cost, and low toxicity. To date, various MnO 2 /carbon composites have been synthesized, such as composites with planar graphite [25], acetylene black [26,27], ordered mesoporous carbon [28,29], carbon nanotubes [30][31][32][33], and carbon aerogels and nanofoams [34]. These have generally been synthesized by physical mixing of MnO 2 with carbon [31], or electrochemically or chemically depositing MnO 2 on carbon substrates [32,33].…”

Section: Introductionmentioning

confidence: 99%

“…These have generally been synthesized by physical mixing of MnO 2 with carbon [31], or electrochemically or chemically depositing MnO 2 on carbon substrates [32,33]. Among these synthesis methods, the chemical deposition of MnO 2 through self-limiting redox reactions of KMnO 4 and carbon is of particular interest [25][26][27][28][29]. In such a synthesis, carbon substrates are exposed to KMnO 4 solution at room temperature or an elevated temperature, and a spontaneous redox reaction described as…”

Section: Introductionmentioning

confidence: 99%

Hierarchical manganese oxide/carbon nanocomposites for supercapacitor electrodes

et al. 2010

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MnO 2 /carbon nanocomposites with hierarchical pore structure and controllable MnO 2 loading have been synthesized using a self-limiting growth method. This was achieved by the redox reactions of KMnO 4 with sacrificed carbon substrates that contain hierarchical pores. The unique pore structure allows the synthesis of nanocomposites with tunable MnO 2 loading up to 83 wt.%. The specific capacitance of the nanocomposites increased with the MnO 2 loading; the conductivity measured by electrochemical impedance spectroscopy, on the other hand, decreased with increasing MnO 2 loading. Optimization of the MnO 2 loading resulted in nanocomposites with high specific capacitance and excellent rate capability. This work provides important fundamental understanding which will facilitate the design and fabrication of high-performance supercapacitor materials for a large variety of applications.

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Preparation and Properties of Manganese Oxide/Carbon Composites by Reduction of Potassium Permanganate with Acetylene Black

Abstract: ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.

Cited by 68 publications

References 29 publications

Materials and fabrication of electrode scaffolds for deposition of MnO2 and their true performance in supercapacitors

Materials and fabrication of electrode scaffolds for deposition of MnO2 and their true performance in supercapacitors

Development of novel supported gold catalysts: A materials perspective

Hierarchical manganese oxide/carbon nanocomposites for supercapacitor electrodes

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