Facile synthesis of porous rod-like CuCo2O4 nano-materials for high energy density asymmetric supercapacitors

Huang, Tsung-Chuan; Qiu, Zehai; Zhang, Hu; Zhang, Zhusen

doi:10.1007/s11581-021-04191-x

Cited by 6 publications

(3 citation statements)

References 37 publications

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“…As revealed in Figure g, the device can maintain more than 90% of its original capacitance after 8000 cycles, confirming the outstanding cycling stability of our device at a high voltage without an apparent polarization. A Ragone plot comparing the energy densities and power density values of the CCO-HS//AC device with other previously reported supercapacitors is seen in Figure h. − As illustrated, the CCO-HS//AC device delivered the highest energy density and power density of 54 Wh kg –1 and 3137 W kg –1 , respectively. Finally, in order to show the real application of our device, we connected two devices in series, and after charging for less than 1 min, they could power 14 green LEDs (Figure ).…”

Section: Resultsmentioning

confidence: 64%

Tunable Fabrication of Hollow Nano Sword-Like CuCo₂O₄ Derived from Bimetal–Organic Frameworks as Binder-Free Electrodes

Kaverlavani

Abbasi

Mishra

et al. 2022

ACS Sustainable Chem. Eng.

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This study successfully synthesized highly porous hollow nano sword-like CuCo2O4 with a large specific surface area (80.2 m2 g–1) on a nickel foam substrate through a simple solution-based method followed by a calcination process. Benefiting from their geometrical merits, including excellent structural robustness, large electroactive surface areas, and 3D open structures, the hollow nano sword arrays of CuCo2O4 deliver remarkable electrochemical performances for SCs. Using this binder-free strategy, the synthesized copper cobalt oxide electrode delivers a great specific capacity of 717 C g–1 at 1 A g–1 with an excellent rate capability and cycling stability in a three-electrode cell configuration. Consequently, the fabricated CCO-HS//AC device exhibits the highest specific energy of 54 Wh kg–1 at a specific power of 3137 W kg–1 with a remarkable cycle stability of 91.1% capacity retention after 8000 cycles, indicating its potential as a novel electrode for energy storage systems.

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Section: Resultsmentioning

confidence: 64%

Tunable Fabrication of Hollow Nano Sword-Like CuCo₂O₄ Derived from Bimetal–Organic Frameworks as Binder-Free Electrodes

Kaverlavani

Abbasi

Mishra

et al. 2022

ACS Sustainable Chem. Eng.

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“…On the other hand, the metal hydroxide electrodes exhibit uneven particle distribution and severe agglomeration, while the metal sulfide based electrode applicability is limited by the conductivity and stability issues for their applications in SCs. 6 Although the conducting polymers demonstrate excellent conductivity, longterm stability is the point of concern. Among all these electrode materials, the transitional-metal-oxide-based materials are more suitable for supercapacitor application, exhibiting pseudocapacitor-type charge storage mechanism.…”

Section: Introductionmentioning

confidence: 99%

“…Transition-metal oxides offer high theoretical capacitance, variable oxidation states, and tuneable morphology, providing more active sites for redox reactions. On the other hand, the metal hydroxide electrodes exhibit uneven particle distribution and severe agglomeration, while the metal sulfide based electrode applicability is limited by the conductivity and stability issues for their applications in SCs . Although the conducting polymers demonstrate excellent conductivity, long-term stability is the point of concern.…”

Section: Introductionmentioning

confidence: 99%

CuCo₂O₄ Nanorods Coated with CuO Nanoneedles for Supercapacitor Applications

Kamble

Rasal

Gaikwad

et al. 2021

ACS Appl. Nano Mater.

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Herein, we report the chemical synthesis of a core−shell nanoarchitecture comprising CuCo 2 O 4 @CuO (CCO@ CuO) on a flexible stainless steel mesh substrate (FSSM) with CuCo 2 O 4 (core) and CuO (shell) by a simple, cost-efficient, additivefree hydrothermal deposition method, followed by successive ionic layer adsorption and reaction method for fabricating a flexible electrode for an asymmetric supercapacitor (ASC). The nanocomposite of CCO@CuO revealed a high surface area of 98.33 m 2 g −1 and the electrode delivered a high specific capacitance of 713 F g −1 at a high current density of 11 mA cm −2 , which was noted to be higher than those of the individual constituent CuO (436 F g −1 ) and CuCo 2 O 4 (443 F g −1 ) metal oxide electrodes. The CCO@CuO electrode demonstrated remarkable cycling stability (∼90% capacitance retention after 5000 charge−discharge cycles at 15 mA cm −2 ). The ASC device CCO@CuO//rGO (reduced graphene oxide) delivered a maximum energy density of 37.43 Wh kg −1 at a power density of 250 W kg −1 . The device revealed 83% capacitance retention after 4000 cycles. These results indicate that the CCO@CuO/FSSM electrode is a promising functional material for energy storage devices.

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RGO nanosheet wrapped β-phase NiCu2S nanorods for advanced supercapacitor applications

Kandhasamy¹,

Preethi

Devendiran

et al. 2022

Environ Sci Pollut Res

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Facile synthesis of porous rod-like CuCo2O4 nano-materials for high energy density asymmetric supercapacitors

Cited by 6 publications

References 37 publications

Tunable Fabrication of Hollow Nano Sword-Like CuCo₂O₄ Derived from Bimetal–Organic Frameworks as Binder-Free Electrodes

Tunable Fabrication of Hollow Nano Sword-Like CuCo₂O₄ Derived from Bimetal–Organic Frameworks as Binder-Free Electrodes

CuCo₂O₄ Nanorods Coated with CuO Nanoneedles for Supercapacitor Applications

RGO nanosheet wrapped β-phase NiCu2S nanorods for advanced supercapacitor applications

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Facile synthesis of porous rod-like CuCo2O4 nano-materials for high energy density asymmetric supercapacitors

Cited by 6 publications

References 37 publications

Tunable Fabrication of Hollow Nano Sword-Like CuCo2O4 Derived from Bimetal–Organic Frameworks as Binder-Free Electrodes

Tunable Fabrication of Hollow Nano Sword-Like CuCo2O4 Derived from Bimetal–Organic Frameworks as Binder-Free Electrodes

CuCo2O4 Nanorods Coated with CuO Nanoneedles for Supercapacitor Applications

RGO nanosheet wrapped β-phase NiCu2S nanorods for advanced supercapacitor applications

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Tunable Fabrication of Hollow Nano Sword-Like CuCo₂O₄ Derived from Bimetal–Organic Frameworks as Binder-Free Electrodes

Tunable Fabrication of Hollow Nano Sword-Like CuCo₂O₄ Derived from Bimetal–Organic Frameworks as Binder-Free Electrodes

CuCo₂O₄ Nanorods Coated with CuO Nanoneedles for Supercapacitor Applications