Dual-metal hydroxide heterojunction and chayote fruit biomass–derived hierarchical porous carbon for augmenting the performance of hybrid supercapacitors

Khalafallah, Diab; Zhang, Qinfang

doi:10.1016/j.est.2024.112621

Journal of Energy Storage

2024

DOI: 10.1016/j.est.2024.112621

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Dual-metal hydroxide heterojunction and chayote fruit biomass–derived hierarchical porous carbon for augmenting the performance of hybrid supercapacitors

Diab Khalafallah,

Qinfang Zhang

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Cited by 4 publications

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MOF−Derived Core‐Shell La(OH)₃@Cu(OH)₂/Co(OH)₂ Heterostructure for Supercapacitors

Khalafallah,

Zhang,

Zhang

2024

Batteries & Supercaps

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Structural metal‐organic framework (MOF)‐based pseudocapacitive components have exhibited significant potential for supercapacitors. Herein, a highly functioning vertically aligned La(OH)3@Cu(OH)2/Co(OH)2 core‐shell composite was in situ yielded from the template Co MOF‐74 frameworks on the nickel foam (Co MOF/NF) via a dual approach of heterointerfacing and structural engineering. The sacrificial template Co MOF/NF microrods were converted into binary hydroxide Cu(OH)2/Co(OH)2/NF (Cu/Co/NF) junction with spatial nanogranule self‐assembled microrods‐like structure through a cation exchange reaction. Subsequently, the binary hydroxide Cu/Co junction was employed as a backbone to stabilize La(OH)3 species via an electrodeposition process, forming a heterostructural La(OH)3@Cu/Co/NF (La@Cu/Co/NF) core‐shell composite. Preliminary electrochemical analysis demonstrates the efficiency of the binder‐free La@Cu/Co/NF core‐shell electrode, revealing a specific capacitance value of 874.8 F g–1 at 1 A g–1 and high rate ability (65.2% capacitance retention at 30 A g–1). Hence, it combines rich electrochemical reactive sites for Faradaic redox reactions and the favorable synergistic effect of integrated constituents. The configured La@Cu/Co/NF//AC asymmetric supercapacitor (ASC) device boasts a maximum voltage window of 1.55 V, acquiring an energy density of 43.9 Wh kg–1 at 775 W kg–1. Besides, the device maintains a capacitance retention rate of 76.4% even after enduring 11,000 charge‐discharge cycles, suggesting good long‐term durability.

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MOF−Derived Core‐Shell La(OH)₃@Cu(OH)₂/Co(OH)₂ Heterostructure for Supercapacitors

Khalafallah,

Zhang,

Zhang

2024

Batteries & Supercaps

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Z-scheme heterostructures confining rGO/protonated C3N5 junction supported CoCu LDH positive electrode and Fe3O4 negative electrode for supercapacitors

Khalafallah,

Ibrahim,

Mohammed

et al. 2025

Carbon

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Heterogeneous layered bimetallic hydroxide electrode material for high-rate solid-state supercapacitor

Ding,

Tong,

Pan

et al. 2025

Journal of Alloys and Compounds

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Dual-metal hydroxide heterojunction and chayote fruit biomass–derived hierarchical porous carbon for augmenting the performance of hybrid supercapacitors

Cited by 4 publications

References 55 publications

MOF−Derived Core‐Shell La(OH)₃@Cu(OH)₂/Co(OH)₂ Heterostructure for Supercapacitors

MOF−Derived Core‐Shell La(OH)₃@Cu(OH)₂/Co(OH)₂ Heterostructure for Supercapacitors

Z-scheme heterostructures confining rGO/protonated C3N5 junction supported CoCu LDH positive electrode and Fe3O4 negative electrode for supercapacitors

Heterogeneous layered bimetallic hydroxide electrode material for high-rate solid-state supercapacitor

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Dual-metal hydroxide heterojunction and chayote fruit biomass–derived hierarchical porous carbon for augmenting the performance of hybrid supercapacitors

Cited by 4 publications

References 55 publications

MOF−Derived Core‐Shell La(OH)3@Cu(OH)2/Co(OH)2 Heterostructure for Supercapacitors

MOF−Derived Core‐Shell La(OH)3@Cu(OH)2/Co(OH)2 Heterostructure for Supercapacitors

Z-scheme heterostructures confining rGO/protonated C3N5 junction supported CoCu LDH positive electrode and Fe3O4 negative electrode for supercapacitors

Heterogeneous layered bimetallic hydroxide electrode material for high-rate solid-state supercapacitor

Contact Info

Product

Resources

About

MOF−Derived Core‐Shell La(OH)₃@Cu(OH)₂/Co(OH)₂ Heterostructure for Supercapacitors

MOF−Derived Core‐Shell La(OH)₃@Cu(OH)₂/Co(OH)₂ Heterostructure for Supercapacitors