Effect of electronic structure modulation and layer spacing change of NiAl layered double hydroxide nanoflowers caused by cobalt doping on supercapacitor performance

Yue, Xiaoqiu; Dong, Yingxia; Cao, Heng; Wei, Xiujuan; Zheng, Qiaoji; Sun, Wei; Lin, Dunmin

doi:10.1016/j.jcis.2022.10.033

Cited by 41 publications

(8 citation statements)

References 64 publications

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“…44 Electronic structure adjustments were attained through the modulation of Co element content. 45 Then, the best-performing Ni 3 FeCo 2 -LDH was regulated for the interlayer structure. During the hydrothermal process, the LDH interlayer anions CO 3 2− are replaced by OSO 3 − from SDS, thus widening the interlayer spacing.…”

Section: Resultsmentioning

confidence: 99%

High-performance ternary NiFeCo-LDH nanosheets for supercapacitors by cation modulation and sodium dodecyl sulfonate intercalation

Li,

Yang,

Chen

et al. 2024

J. Mater. Chem. A

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Section: Resultsmentioning

confidence: 99%

High-performance ternary NiFeCo-LDH nanosheets for supercapacitors by cation modulation and sodium dodecyl sulfonate intercalation

Li,

Yang,

Chen

et al. 2024

J. Mater. Chem. A

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“…From Figure f, three peaks can be used to fit the XPS spectra of O 1s for the NVO (Figure f), where the characteristic peaks at 530.0 and 530.8 eV can be attributed to V–O bonds and lattice oxygen, respectively, while the peak at 532.5 eV is attributed to the characteristic of H 2 O. Compared with the NVO, the binding energy of the EG-NVO (12:1) is negatively shifted, indicating that the insertion of EG changes the binding environment between V and O, resulting in an increase in electron density, thereby accelerating the electron transfer rate. , …”

Section: Resultsmentioning

confidence: 99%

“…Compared with the NVO, the binding energy of the EG-NVO (12:1) is negatively shifted, indicating that the insertion of EG changes the binding environment between V and O, resulting in an increase in electron density, thereby accelerating the electron transfer rate. 56,57 Figures 2 and S3−S5 demonstrate the morphology and microstructure of the NVO and EG-NVO. From Figures S3, the NVO material consists of strips with various sizes.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Ethylene Glycol Intercalation Engineered Interplanar Spacing and Redox Activity of Ammonium Vanadate Nanoflowers as a High-Performance Cathode for Aqueous Zinc–Ion Batteries

Chen

Zhang

Chen

et al. 2023

ACS Sustainable Chem. Eng.

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Ammonium vanadate (NH4V4O10) has attracted considerable focus as a cathode material with great potential for aqueous zinc ion batteries due to its multielectron redox reaction of V and low cost; however, problems such as structural instability and slow reaction kinetics during cycling hinder its widespread application. Herein, ethylene glycol is intercalated into the interlayer of NH4V4O10 to develop high-performance cathodes for aqueous zinc ion batteries. The layer spacing of the material is expanded by ∼23% after the intercalation of ethylene glycol, providing a large interlaminar channel for Zn2+ diffusion, while the addition of ethylene glycol leads to the micromorphology of nanoflowers self-assembled by ultrathin nanosheets, exposing more active sites for ion and electron transport. Moreover, the successful partial substitution of ethylene glycol for NH4 + in the NH4V4O10-based material results in an increase in the level of V5+ and alleviates irreversible deamination, promoting efficient redox reactions. In addition, the introduction of ethylene glycol efficiently decreases the band gap of NH4V4O10 and, thus, improves the conductivity. As a result, the ethylene glycol-intercalated NH4V4O10 cathode provides a high reversible capacity of 516 mAh g–1 at 0.5 A g–1 and achieves an excellent cycling performance with a capacity retention rate of 91% after 1000 cycles at 10 A g–1. This work provides a feasible strategy to develop high-performance layered V-based cathodes for AZIBs by the coregulation of crystal structure, micromorphology, and redox chemistry.

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“…Materials should maintain their structural integrity and not undergo significant volume changes, which can lead to mechanical stress and degradation. [31,32] In this study, a high-entropy novel NiPr 0.5 FeP/N-rGO electrode with a hollow nanoflower structure for dual application is investigated. The NiPr 0.5 FeP/N-rGO electrode exhibited promising electrochemical and redox performances in LIBs and DBFCs.…”

Section: Cathode Reactionmentioning

confidence: 99%

High Entropy Pr‐Doped Hollow NiFeP Nanoflowers Inlaid on N‐rGO for Efficient and Durable Electrodes for Lithium‐Ion Batteries and Direct Borohydride Fuel Cells

Basumatary,

Hyeok Choi,

Emin Kilic

et al. 2023

ChemSusChem

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The selection and design of new electrode materials for energy conversion and storage are critical for improved performance, cost reduction, and mass manufacturing. A bifunctional anode with high catalytic activity and extended cycle stability is crucial for rechargeable lithium‐ion batteries and direct borohydride fuel cells. Herein, a high entropy novel three‐dimensional structured electrode with Pr‐doped hollow NiFeP nanoflowers inlaid on N‐rGO was prepared via a simple hydrothermal and self‐assembly process. For optimization of Pr content, three (0.1, 0.5, and 0.8) different doping ratios were investigated. A lithium‐ion battery assembled with NiPr0.5FeP/N‐rGO electrode achieved an outstanding specific capacity of 1.61 Ah g−1 at 0.2 A g−1 after 100 cycles with 99.3 % Coulombic efficiencies. A prolonged cycling stability of 1.02 Ah g−1 was maintained even after 1000 cycles at 0.5 A g−1. In addition, a full cell battery with NiPr0.5FeP/N‐rGO∥LCO (Lithium cobalt oxide) delivered a promising cycling performance of 0.52 Ah g−1 after 200 cycles at 0.15 A g−1. Subsequently, the NiPr0.5FeP/N‐rGO electrode in a direct borohydride fuel cell showed the highest peak power density of 93.70 mW cm−2 at 60 °C. Therefore, this work can be extended to develop advanced electrode for next‐generation energy storage and conversion systems.

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Effect of electronic structure modulation and layer spacing change of NiAl layered double hydroxide nanoflowers caused by cobalt doping on supercapacitor performance

Cited by 41 publications

References 64 publications

High-performance ternary NiFeCo-LDH nanosheets for supercapacitors by cation modulation and sodium dodecyl sulfonate intercalation

High-performance ternary NiFeCo-LDH nanosheets for supercapacitors by cation modulation and sodium dodecyl sulfonate intercalation

Ethylene Glycol Intercalation Engineered Interplanar Spacing and Redox Activity of Ammonium Vanadate Nanoflowers as a High-Performance Cathode for Aqueous Zinc–Ion Batteries

High Entropy Pr‐Doped Hollow NiFeP Nanoflowers Inlaid on N‐rGO for Efficient and Durable Electrodes for Lithium‐Ion Batteries and Direct Borohydride Fuel Cells

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