Homogeneous Fe<sub>2</sub>O<sub>3</sub> coatings on carbon nanotube structures for supercapacitors

Yu, Pengmei; Coll, Mariona; Amade, Roger; Alshaikh, Islam; Pantoja-Suárez, Fernando; Pascual, E.; Andújar, J.L.; Bertran, Enric

doi:10.1039/c9dt04908h

Cited by 17 publications

(10 citation statements)

References 49 publications

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“…In addition, the assembled asymmetric supercapacitor CNTs@NiCo‐LDH||ZIF‐8 derived carbon can provide a high energy density of 37.38 Wh/kg at a power density of 800 W/kg and maintain 90.22% capacity after 5200 cycles. Yu et al 87 formed Fe 2 O 3 conformal coating on vertically aligned CNTs by atomic layer deposition. It is found that iron oxide coating increases the regional capacitance, but too thick (30 nm) coating reduces the active area and electrochemical properties.…”

Section: Binary Complexesmentioning

confidence: 99%

Carbon nanomaterials and their composites for supercapacitors

2022

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As a type of energy storage device between traditional capacitors and batteries, the supercapacitor has the advantages of energy saving and environmental protection, high power density, fast charging and discharging speed, long cycle life, and so forth. One of the key factors affecting the performance of supercapacitor is the electrode material. Carbon materials, such as carbon nanotube, graphene, activated carbon, and carbon nanocage, are most widely concerned in the application of supercapacitors. The synergistic effect of composites can often obtain excellent results, which is one of the common strategies to increase the electrochemical performance of supercapacitors. To further improve the performance of binary composites, it is a relatively simple method to increase the components as the "bridge" between the two materials to form the ternary composites. The review mainly introduces the current research progress of supercapacitors with pure carbon nanomaterials and multistage carbon nanostructures (composites) as electrodes. The characteristics and application directions of different pure carbon nanomaterials are introduced in detail. Different ways of multilevel structure (material) composite have their own effects on the development of high-performance supercapacitors. We also highlight the recent advances related to these fields and provide our insight into high-energy supercapacitors.

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Section: Binary Complexesmentioning

confidence: 99%

Carbon nanomaterials and their composites for supercapacitors

2022

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“…Ferrocene and its simple derivatives have been frequently used as a source of iron 197 or iron oxides during the preparation of Fe 2 O 3 nanoparticles 198 and bulk or surface-modified composite materials for sensing, 199 electronics 200 and catalysis, 201 whereas ferrocene itself is frequently used as a precursor of single-walled carbon nanotube (SWCNT) growth catalysts. 202 Ionic ferrocene derivatives ( e.g.…”

Section: Applications Of Ferrocene and Ferrocene Derivativesmentioning

confidence: 99%

Forever young: the first seventy years of ferrocene

Štěpnička

2022

Dalton Trans.

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“…The lowest R ct observed in Ru@a-CNTs is possibly attributed to (i) increase in the interfacial surface area resulted by acid treatment, which is supported by the result of the Brunauer–Emmett–Teller (BET) measurement shown in Figure S8 and Table S2, and (ii) facilitation of electron transfer owing to pseudocapacitive redox reactions of Ru NPs . At the low-frequency region, all curves are linear lines with high slopes, which are typically shown in the capacitive behavior of porous carbon electrodes without diffusion limitation. − …”

Section: Resultsmentioning

confidence: 63%

Large-Scale, Lightweight, and Robust Nanocomposites Based on Ruthenium-Decorated Carbon Nanosheets for Deformable Electrochemical Capacitors

Jun

Lee

Kim

et al. 2022

ACS Appl. Mater. Interfaces

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Despite the increase in demand for deformable electrochemical capacitors as a power source for wearable electronics, significant obstacles remain in developing these capacitors, including their manufacturing complexity and insufficient deformability. With recognition of these challenges, a facile strategy is proposed to fabricate large-scale, lightweight, and mechanically robust composite electrodes composed of ruthenium nanoparticles embedded in freestanding carbon nanotube (CNT)-based nanosheets (Ru@a-CNTs). Surface-modified CNT sheets with hierarchical porous structures can behave as an ideal platform to accommodate a large number of uniformly distributed Ru nanoparticles (Ru/CNT weight ratio of 5:1) while improving compatibility with aqueous electrolytes. Accordingly, Ru@a-CNTs offer a large electrochemically active area, showing a high specific capacitance (∼253.3 F g–1) and stability for over 2000 cycles. More importantly, the exceptional performance and mechanical durability of quasi-solid-state capacitors assembled with Ru@a-CNTs and a PVA-H3PO4 hydrogel electrolyte are successfully demonstrated in that 94% of the initial capacitance is retained after 100 000 cycles of bending deformation and a commercial smartwatch is charged by multiple cells. The feasible large-scale production and potential applicability shown in this study provide a simple and highly effective design strategy for a wide range of energy storage applications from small- to large-scale wearable electronics.

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Homogeneous Fe₂O₃ coatings on carbon nanotube structures for supercapacitors

Abstract: The combination of carbon nanotubes with transition metal oxides can exhibit complementary charge storage properties for use as electrode materials for next generation energy storage devices.

Cited by 17 publications

References 49 publications

Carbon nanomaterials and their composites for supercapacitors

Carbon nanomaterials and their composites for supercapacitors

Forever young: the first seventy years of ferrocene

Large-Scale, Lightweight, and Robust Nanocomposites Based on Ruthenium-Decorated Carbon Nanosheets for Deformable Electrochemical Capacitors

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Homogeneous Fe2O3 coatings on carbon nanotube structures for supercapacitors

Abstract: The combination of carbon nanotubes with transition metal oxides can exhibit complementary charge storage properties for use as electrode materials for next generation energy storage devices.

Cited by 17 publications

References 49 publications

Carbon nanomaterials and their composites for supercapacitors

Carbon nanomaterials and their composites for supercapacitors

Forever young: the first seventy years of ferrocene

Large-Scale, Lightweight, and Robust Nanocomposites Based on Ruthenium-Decorated Carbon Nanosheets for Deformable Electrochemical Capacitors

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Product

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About

Homogeneous Fe₂O₃ coatings on carbon nanotube structures for supercapacitors