Sheet-like NiCo-layered double hydroxide anchored on N self-doped hierarchical porous carbon aerogel from chitosan for high-performance supercapacitors

Zhao, Kai; Sun, Xiaolin; Wang, Zihao; Huang, Chuanfeng; Li, Da; Liu, Jingquan

doi:10.1016/j.jallcom.2022.166036

Cited by 34 publications

(26 citation statements)

References 67 publications

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“…Clear concentric diffraction rings and many bright spots can be observed, demonstrating the polycrystalline structure of the FBC/NCL-3 composites. [41] Figure 4a shows the X-ray diffraction (XRD) pattern of FBC/NCLs, where the characteristic diffraction peaks are consistent with the hydrotalcite-like NiCo-LDH phase (JCPDS 33-0429). [42] The most significant XRD peaks of NCL at 11.6°, 23.3°, 34.3°, 39.5°, and 60.9°correspond to (0 0 3), (0 0 6), (0 1 2), (0 1 5), and (1 1 0) crystal planes, respectively, which agree with the high-resolution transmission electron microscopy (HRTEM) analysis.…”

Section: Resultsmentioning

confidence: 89%

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In Situ Growth of NiCo Layered Double Hydroxide on Biomass Waste‐Based Substrate: A Novel Material with 3D Interconnected Structure as Electrodes for Supercapacitors

Wang

et al. 2022

Energy Tech

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Next‐generation energy storage systems require green and renewable electrodes with a high specific capacity, which combine biomass waste and bimetallic hydroxide synergically to satisfy environmental enhancements and economic benefits. Herein, a novel approach to improving the electrical conductivity of bimetallic materials by in situ growing NiCo layered double hydroxides (LDHs) with pseudocapacitance capability on KMnO4‐activated fungus bran‐derived carbons (FBCs) is reported, achieving improved electrochemical performance in supercapacitors (SCs). The hierarchical porous FBC substrate contributes to the homogeneous growth of the LDHs and high electronic and ionic conductivity. The optimal composite (FBC/NCL‐3) with a 3D interconnected structure provides a specific capacitance of 1938 F g−1 at a current density of 1 A g−1. Correspondingly, the hybrid battery‐SC device composed of FBC/NCL‐3 and FBC provides favorable stability (76% specific capacity retention at 5 A g−1 for 3000 cycles) with an operating voltage of 1.4 V and a high energy density of 37.3 Wh kg−1 at a power density of 695.6 W kg−1. This work demonstrates a promising strategy using FBC as a substrate for growing LDH materials aiming to achieve high‐performance SCs.

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Section: Resultsmentioning

confidence: 89%

“…Clear concentric diffraction rings and many bright spots can be observed, demonstrating the polycrystalline structure of the FBC/NCL‐3 composites. [ 41 ]…”

Section: Resultsmentioning

confidence: 99%

In Situ Growth of NiCo Layered Double Hydroxide on Biomass Waste‐Based Substrate: A Novel Material with 3D Interconnected Structure as Electrodes for Supercapacitors

Wang

et al. 2022

Energy Tech

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“…[ 3 ] For those reasons, composites of carbon‐based materials and metal oxides have been pointed out as good candidates to overcome the limitations of their individual components, combining high energy storage with high power and stability. [ 4 ]…”

Section: Introductionmentioning

confidence: 99%

Role of Defects on the Particle Size–Capacitance Relationship of Zn–Co Mixed Metal Oxide Supported on Heteroatom‐Doped Graphenes as Supercapacitors

Peng

Albero

et al. 2022

Advanced Science

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Supercapacitors are considered among the most promising electrical energy storage devices, there being a need to achieve the highest possible energy storage density. Herein small mixed Zn-Co metal oxide nanoparticles are grown on doped graphene (O-, N-and, B-doped graphenes). The electrochemical properties of the resulting mixed Zn-Co metal oxide nanoparticles (4 nm) grown on B-doped graphene exhibit an outstanding specific capacitance of 2568 F g −1 at 2 A g −1 , ranking this B-doped graphene composite among the best performing electrodes. The energy storage capacity is also remarkable even at large current densities (i.e., 640 F g −1 at 40 A g −1 ). In contrast, larger nanoparticles are obtained using N-and O-doped graphenes as support, the resulting materials exhibiting lower performance. Besides energy storage, the Zn-Co oxide on B-doped graphene shows notable electrochemical performance and stability obtaining a maximum energy density of 77.6 W h Kg −1 at 850 W Kg −1 , a power density of 8500 W Kg −1 at 28.3 W h Kg −1 , and a capacitance retention higher than 85% after 5000 cycles. The smaller nanoparticle size and improved electrochemical performance on B-doped graphene-based devices are attributed to the higher defect density and nature of the dopant element on graphene.

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“…4,5 Nevertheless, the NiCo LDH suffers from low electronic conductivity, limited electroactive sites, and self-agglomeration. 6,7 An effective strategy to resolve these issues is to construct superior structures. Two-dimensional (2D) nanoflakes can improve the specific surface areas, promote ion and electron transfer, and expose abundant electroactive edge sites, resulting in excellent electrochemical performance.…”

Section: Introductionmentioning

confidence: 99%

“…The electrochemical performances of the electrodes are highly related to the categories and structures of the electroactive materials. In recent years, NiCo layered double hydroxides (LDHs) have drawn considerable attention due to their large theoretical specific capacitance (∼3000 F g –1 ), large specific area, and high redox activity. , Nevertheless, the NiCo LDH suffers from low electronic conductivity, limited electroactive sites, and self-agglomeration. , An effective strategy to resolve these issues is to construct superior structures. Two-dimensional (2D) nanoflakes can improve the specific surface areas, promote ion and electron transfer, and expose abundant electroactive edge sites, resulting in excellent electrochemical performance .…”

Section: Introductionmentioning

confidence: 99%

MXene-Coated Nickel Ion-Exchanged ZIF Skeleton-Cavity Layered Double Hydroxides for Supercapacitors

et al. 2022

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A NiCo layered double hydroxide (LDH) has been regarded as a promising electrode material for supercapacitors. However, the low electronic conductivity, limited electroactive sites, and self-agglomeration hinder its large-scale application. Herein, MXene-coated nickel ion-exchanged ZIF skeleton-cavity LDHs (ZSC-LDH@MXene) were fabricated to enhance the electrochemical performance of NiCo LDHs. The ZSC-LDH@MXene integrated the advantages of various materials, providing abundant metal active sites and fast redox reaction kinetics and enhancing the specific capacity of the electrode. The MXene nanosheets can construct abundant conductive networks, enhancing the electronic conductivity of the NiCo LDH. The nanosheetassembled ZIF skeleton-cavity structure can facilitate electron/ion transport, enlarge the electrolyte accessibility, and expose abundant electroactive sites. Furthermore, the hollow cavity can relieve the volume expansion during the charging/discharging cycles. Ultimately, the as-obtained ZSC-LDH@MXene electrode manifested a large specific capacity of 1029.6 C g −1 at 1 A g −1 , a superior rate capability of 62.6% at 30 A g −1 , as well as outstanding cycling performance with a 92.0% capacity retention at 10 A g −1 over 10,000 cycles. The assembled ZSC-LDH@MXene//AC hybrid supercapacitor exhibited a superb energy density of 43.7 W h kg −1 at 789 W kg −1 .

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Sheet-like NiCo-layered double hydroxide anchored on N self-doped hierarchical porous carbon aerogel from chitosan for high-performance supercapacitors

Cited by 34 publications

References 67 publications

In Situ Growth of NiCo Layered Double Hydroxide on Biomass Waste‐Based Substrate: A Novel Material with 3D Interconnected Structure as Electrodes for Supercapacitors

In Situ Growth of NiCo Layered Double Hydroxide on Biomass Waste‐Based Substrate: A Novel Material with 3D Interconnected Structure as Electrodes for Supercapacitors

Role of Defects on the Particle Size–Capacitance Relationship of Zn–Co Mixed Metal Oxide Supported on Heteroatom‐Doped Graphenes as Supercapacitors

MXene-Coated Nickel Ion-Exchanged ZIF Skeleton-Cavity Layered Double Hydroxides for Supercapacitors

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