Binary metal hydroxide nanorods and multi-walled carbon nanotube composites for electrochemical energy storage applications

Salunkhe, Rahul R.; Jang, Kihun; Lee, Sung-Won; Yu, Seongil; Ahn, Heejoon

doi:10.1039/c2jm32638h

Cited by 79 publications

(41 citation statements)

References 35 publications

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“…Salunkhe et al developed nickel-cobalt binary metal hydroxide nanorods coated multiwalled carbon nanotube hybrid material through a chemical synthesis method [29]. The as-obtained hybrid showed enhanced supercapacitive performance and cycling ability.…”

Section: Introductionmentioning

confidence: 99%

Controllable preparation of multi-dimensional hybrid materials of nickel-cobalt layered double hydroxide nanorods/nanosheets on electrospun carbon nanofibers for high-performance supercapacitors

Lai

Huang

Miao

et al. 2015

Electrochimica Acta

110

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Section: Introductionmentioning

confidence: 99%

Controllable preparation of multi-dimensional hybrid materials of nickel-cobalt layered double hydroxide nanorods/nanosheets on electrospun carbon nanofibers for high-performance supercapacitors

Lai

Huang

Miao

et al. 2015

Electrochimica Acta

110

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“…In general, the properties and structures of the used electrode materials have significant influence on the electrochemical performance of asymmetric supercapacitors and 45 thus, become a key factor for further advancing the research of asymmetric supercapacitors. [11][12][13] With regard to the positive 50 electrode materials, transition metal, 14 transition metal oxides/hydroxides, [15][16][17] binary metal oxides 18 and conducting polymers 19 are investigated extensively owing to their relatively higher specific capacitance and superior energy densities. [11][12][13] With regard to the positive 50 electrode materials, transition metal, 14 transition metal oxides/hydroxides, [15][16][17] binary metal oxides 18 and conducting polymers 19 are investigated extensively owing to their relatively higher specific capacitance and superior energy densities.…”

Section: Introductionmentioning

confidence: 99%

A reduced graphene oxide modified metallic cobalt composite with superior electrochemical performance for supercapacitors

Liu

Wang

et al. 2015

RSC Adv.

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In this work, a unique reduced graphene oxide modified metallic cobalt (rGO/Co) composite, in which Co nanoparticles in situ anchored on rGO sheets, had been synthesized via a facile one pot co-precipitation approach. Such a composite exhibited an impressive performance when used in (asymmetric) supercapacitors. For comparison purposes, pure rGO and Co were also prepared and investigated. Microscopic observation techniques, nitrogen sorption analysis and electrochemical methods et al. were 10 used to characterize the materials' properties. The physical characterizations revealed rGO/Co possessed a "particle on sheet" structure with a "point to face" electronic contact between these two components, and the size of Co was much smaller than pure Co due to the geometric confinement of rGO, as well as a larger Brunauer-Emmett-Teller (BET) surface area resulted from the structure synergistic effect for alleviating the agglomeration of each component. Remarkably, the rGO/Co composite displayed the best 15 electrochemical performances among the three synthesized samples with the capacity as high as 882.7 F·g -1 at a current density of 2 A·g -1 and presented a high rate capability as well. Moreover, a asymmetric supercapacitor using rGO/Co as positive active materiel and activated carbon (AC) as negative active materiel has also been fabricated and tested in the potential window ranged between 0-1.6 V, which had been demonstrated could achieve a maximum energy density of 40.7 Wh·kg -1 at a power density of 20 1585.0 W·kg -1 as well as excellent rate capability and outstanding cycling durability. 65 Among various carbonaceous materials, graphene, a rising star, has attracted many attentions because of its extraordinary electrical stability, large surface area, superior mechanical properties, and good electrochemical stability. [23][24][25][26] Nevertheless, on the one hand, the previous reported research of such kind of 70 composites were in generl in a symmetric capacitor system resulted in a limited improvement in energy density; on the other The prepared rGO/Co//AC asymmetric supercapacitor displayed good electrochemical performances, which achieved a maximum energy density of 40.7 Wh·kg -1 at a power density of 1585.0 W·kg -1 .

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“…As a result, attaching CNT film onto another flexible substrate such as stainless steel foil was a promising solving strategy, and this CNT film can be used for the growth of high-capacitance pseudocapacitive nanomaterials. [99] Using steel mesh to replace the planer foil further increased the specific area of the substrate, thus enlarged the loading mass per area for the electrodes. Hierarchical nanowires attracted much attention in the applications of energy conversion and storage.…”

Section: Inorganic Pseudocapacitive Materialsmentioning

confidence: 99%

Fabrication and functionalization of carbon nanotube films for high-performance flexible supercapacitors

Chen

Zeng

Chen

et al. 2015

Carbon

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Binary metal hydroxide nanorods and multi-walled carbon nanotube composites for electrochemical energy storage applications

Cited by 79 publications

References 35 publications

Controllable preparation of multi-dimensional hybrid materials of nickel-cobalt layered double hydroxide nanorods/nanosheets on electrospun carbon nanofibers for high-performance supercapacitors

Controllable preparation of multi-dimensional hybrid materials of nickel-cobalt layered double hydroxide nanorods/nanosheets on electrospun carbon nanofibers for high-performance supercapacitors

A reduced graphene oxide modified metallic cobalt composite with superior electrochemical performance for supercapacitors

Fabrication and functionalization of carbon nanotube films for high-performance flexible supercapacitors

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