Highly porous nanocomposites of Mn doped cobalt-based hydroxide/sulfide as high-performance electrode materials for hybrid supercapacitors

Gan, Ziwei; Ren, Xiaohe; Sun, Yongxiu; Sun, Mengxuan; Yan, Yijun; Cao, Baobao; Shen, Wenzhong; Yu, Haojie; Li, Zhijie; Fu, Yong Qing

doi:10.1016/j.est.2023.107934

Cited by 13 publications

(4 citation statements)

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“…In order to further improve the cycling stability, some researchers have tried to fabricate the hybrids. For instance, Gan et al [ 119 ] recently reported the Co(OH) 2 /CoS hybrid nanostructure, which displays high rate capability (75.8% capacity retention as the current density was increased from 0.5 to 10 A g −1 ) and long cycling stability. Wang et al [ 120 ] synthesized a Co(OH) 2 /nitrogen-doped porous graphene composite and realized ultrahigh specific capacity (1144 C g −1 at 2 A g −1 ), and long cycling stability (95.9% of capacity retention after 4000 cycles).…”

Section: Recent Advances In Materials For Hybrid Supercapacitorsmentioning

confidence: 99%

Electrode Materials, Structural Design, and Storage Mechanisms in Hybrid Supercapacitors

Du,

Lin,

Wang

et al. 2023

Molecules

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Currently, energy storage systems are of great importance in daily life due to our dependence on portable electronic devices and hybrid electric vehicles. Among these energy storage systems, hybrid supercapacitor devices, constructed from a battery-type positive electrode and a capacitor-type negative electrode, have attracted widespread interest due to their potential applications. In general, they have a high energy density, a long cycling life, high safety, and environmental friendliness. This review first addresses the recent developments in state-of-the-art electrode materials, the structural design of electrodes, and the optimization of electrode performance. Then we summarize the possible classification of hybrid supercapacitor devices, and their potential applications. Finally, the fundamental theoretical aspects, charge-storage mechanism, and future developing trends are discussed. This review is intended to provide future research directions for the next generation of high-performance energy storage devices.

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Section: Recent Advances In Materials For Hybrid Supercapacitorsmentioning

confidence: 99%

Electrode Materials, Structural Design, and Storage Mechanisms in Hybrid Supercapacitors

Du,

Lin,

Wang

et al. 2023

Molecules

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“…27 Gan et al utilized simple hydrothermal and annealing methods to obtain Mn-doped cobalt-base hydroxide/sulfur nanocomposite, improving the material's electrical conductivity and specific capacitance. 28 Doping NiCoDHs with a transition metal can alter their energy band structure to enhance electrical conductivity. Nonetheless, more research is needed to understand the relationship between transition-metal doping and electrochemical performance entirely.…”

Section: ■ Introductionmentioning

confidence: 99%

“…DFT calculations by Wu and colleagues demonstrated that manganese doping optimized the reaction sites of nickel–cobalt hydroxide/carbon nanotubes during the oxygen evolution reaction, hence reducing the kinetic energy barrier . Gan et al utilized simple hydrothermal and annealing methods to obtain Mn-doped cobalt-base hydroxide/sulfur nanocomposite, improving the material’s electrical conductivity and specific capacitance . Doping NiCoDHs with a transition metal can alter their energy band structure to enhance electrical conductivity.…”

Section: Introductionmentioning

confidence: 99%

Nanostructured Mn-Doped Ni–Co Hydroxide Microspheres for Fast-Kinetics Supercapacitors

Hu,

Wu,

Sun

et al. 2024

ACS Appl. Nano Mater.

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Transition-metal double hydroxides offer many benefits, including abundant nanostructures, low cost, easy preparation, diverse compositions, and adjustable physicochemical properties, which have a wide range of applications and are highly promising for the development of high-performance electrode materials. Herein, hydrangea-like manganese-doped nickel−cobalt double hydroxide (NiCoDH-Mn) nanostructures were prepared through a fast one-step microwave hydrothermal method within a few minutes. A thorough analysis was conducted on how the nanostructure, crystal structure, and electrochemical properties of the samples were affected by the amount of the Mn doping content. Density functional theory (DFT) calculations demonstrated that the introduction of Mn doping can generate impurity levels around the Fermi level of NiCoDH, enhancing its electrical conductivity. At a current density of 1 A g −1 , the optimized NiCoDH-Mn has a remarkable specific capacity of 107.4 mA h g −1 . Even when the current density increases by 15 times, it can still maintain a high specific capacity of 66.3 mA h g −1 . After undergoing 1500 cycles with a current density of 5 A g −1 , the electrode's capacity remains 128%. The hybrid supercapacitor consisting of the NiCoDH-Mn cathode and mango seed-derived activated carbon anode has an impressive energy density of 47.9 W h kg −1 and a power density of 850 W kg −1 . Moreover, it boasts an impressive capacitance retention rate of 87.5%, even after 5000 cycles. We offer a highly effective and speedy approach to creating highperformance transition-metal hydroxides that are ideal for energy storage systems.

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“…36–39 Besides, numerous studies have shown that the proper introduction of doping elements in sulfides can play a role in adjusting their electronic structure and stabilizing their structure, which is also an effective strategy for enhancing supercapacitor performance. 40–44 However, reports on the combination of these two strategies within negative electrode materials are scarce.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of a (NiFe)₉S₈ nanorod array as a negative electrode for a high-performance hybrid supercapacitor

Zhou,

Wang,

et al. 2024

CrystEngComm

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Highly porous nanocomposites of Mn doped cobalt-based hydroxide/sulfide as high-performance electrode materials for hybrid supercapacitors

Cited by 13 publications

References 50 publications

Electrode Materials, Structural Design, and Storage Mechanisms in Hybrid Supercapacitors

Electrode Materials, Structural Design, and Storage Mechanisms in Hybrid Supercapacitors

Nanostructured Mn-Doped Ni–Co Hydroxide Microspheres for Fast-Kinetics Supercapacitors

Synthesis of a (NiFe)₉S₈ nanorod array as a negative electrode for a high-performance hybrid supercapacitor

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Highly porous nanocomposites of Mn doped cobalt-based hydroxide/sulfide as high-performance electrode materials for hybrid supercapacitors

Cited by 13 publications

References 50 publications

Electrode Materials, Structural Design, and Storage Mechanisms in Hybrid Supercapacitors

Electrode Materials, Structural Design, and Storage Mechanisms in Hybrid Supercapacitors

Nanostructured Mn-Doped Ni–Co Hydroxide Microspheres for Fast-Kinetics Supercapacitors

Synthesis of a (NiFe)9S8 nanorod array as a negative electrode for a high-performance hybrid supercapacitor

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Synthesis of a (NiFe)₉S₈ nanorod array as a negative electrode for a high-performance hybrid supercapacitor