P-doped cobalt carbonate hydroxide@NiMoO4 double-shelled hierarchical nanoarrays anchored on nickel foam as a bi-functional electrode for energy storage and conversion

Zhu, Zhuoni; Tian, Wen; Lv, Xingbin; Wang, Feifei; Hu, Zhufeng; Ma, Kui; Wang, Caihong; Yang, Tao; Ji, Junyi

doi:10.1016/j.jcis.2020.11.046

Cited by 31 publications

(29 citation statements)

References 60 publications

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“…1,51 The Ni 2p spectrum indicates two main peaks centered at 855.5 and 873.1 eV, which can be assigned to Ni 2+ (Figure 4d). 52,53 After Fe/Pt doping, the two Ni 2+ peaks shift positively, while the appearance of the two new peaks is related to Ni 3+ . The appearance of Ni 3+ can be attributed to the electron transfer from Ni to Fe/Pt species.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Plasma-Induced Defect Engineering and Cation Refilling of NiMoO₄ Parallel Arrays for Overall Water Splitting

Liu

Wang

et al. 2021

ACS Appl. Mater. Interfaces

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Developing highly active water splitting electrocatalysts with ordered micro/nanostructures and uniformly distributed active sites can meet the increasing requirement for sustainable energy storage/utilization technologies. However, the stability of complicated structures and active sites during a long-term process is also a challenge. Herein, we fabricate a novel approach to create sufficient atomic defects via N2 plasma treatment onto parallel aligned NiMoO4 nanosheets, followed by refilling of these defects via heterocation dopants and stabilizing them by annealing. The parallel aligned nanosheet arrays with an open structure and quasi-two-dimensional long-range diffusion channels can accelerate the mass transfer at the electrolyte/gas interface, while the incorporation of Fe/Pt atoms into defect sites can modulate the local electronic environment and facilitate the adsorption/reaction kinetics. The optimized Pt-NP-NMC/CC-5 and Fe-NP-NMC/CC-10 electrodes exhibit low overpotentials of 71 and 241 mV at 10 mA cm–2 for the hydrogen evolution reaction (HER) and the oxygen evolution reaction (OER), respectively, and the assembled device reveals a low voltage of 1.55 V for overall water splitting. This plasma-induced high-efficiency defect engineering and coupled active site stabilization strategy can be extended to large-scale fabrication of high-end electrocatalysts.

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Section: ■ Results and Discussionmentioning

confidence: 99%

Plasma-Induced Defect Engineering and Cation Refilling of NiMoO₄ Parallel Arrays for Overall Water Splitting

Liu

Wang

et al. 2021

ACS Appl. Mater. Interfaces

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“…These oxyphosphide species might be formed on the surface when the phosphide samples are exposed to air. As shown in Figure S6, the O 1s spectrum of AlCu-NiCoP can be deconvoluted into three peaks at 531.3, 531.9, and 533.3 eV, corresponding to lattice oxygen (M–O), metal hydroxyl (O–H), and oxygen vacancies (O v ), respectively . The oxygen defects can facilitate the charge transfer by improving electrical conductivity and boost ion transport by decreasing the ion-diffusion energy barrier .…”

Section: Resultsmentioning

confidence: 99%

“…Figure b shows the CV curves of the AHS at various scan rates ranging from 1 to 50 mV s –1 . The CV curves of the assembled AHS show a pair of redox peaks, typical for battery-type characteristics Figure c presents the GCD curves of the assembled AHS at different current densities ranging from 1 to 20 A g –1 .…”

Section: Resultsmentioning

confidence: 99%

“…As shown in Figure S6, the O 1s spectrum of AlCu-NiCoP can be deconvoluted into three peaks at 531.3, 531.9, and 533.3 eV, corresponding to lattice oxygen (M−O), metal hydroxyl (O−H), and oxygen vacancies (O v ), respectively. 42 The oxygen defects can facilitate the charge transfer by improving electrical conductivity and boost ion transport by decreasing the ion-diffusion energy barrier. 43 The Al 2p peak (Figure 3e) at 74.4 eV can be assigned to the presence of Al 3+ .…”

Section: ■ Results and Discussionmentioning

confidence: 99%

“…The CV curves of the assembled AHS show a pair of redox peaks, typical for battery-type characteristics. 42 Figure 5c presents the GCD curves of the assembled AHS at different current densities ranging from 1 to 20 A g −1 . As shown in Figure 5d, the specific capacity of the AHS is calculated to be 301.4 C g −1 at a current density of 1 A g −1 , with a capacity retention of 50.7% at 20 A g −1 .…”

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Zeolitic Imidazole Framework Sacrificial Template-Assisted Synthesis of NiCoP Nanocages Doped with Multiple Metals for High-Performance Hybrid Supercapacitors

Lyu

Antink

Lee

et al. 2021

ACS Appl. Energy Mater.

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Metal phosphides have great potential for electrochemical energy-storage devices and electrocatalysis. Although monometallic and bimetallic phosphides have been extensively studied, the preparation of more complex metal phosphides remains challenging and it is necessary to further expand the available design space. Herein, we report a universal method to dope various metal cations into NiCoP nanocages (M-NiCoP, M = Al, Cu, Cr, Zn). Interestingly, the method can also be expanded to allow the incorporation of two to four metal dopants simultaneously (AlCu-NiCoP, AlZn-NiCoP, CrZn-NiCoP, AlCrCu-NiCoP, AlCrCuZn-NiCoP). To investigate the effect of incorporating multiple dopants, AlCu-NiCoP was used as the electrode material for supercapacitors, showing enhanced capacity and cycling stability compared to Al-NiCoP, Cu-NiCoP, and NiCoP electrodes. The superior electrochemical performance is attributed to the increased number of active sites, improved ion-diffusion kinetics, and a modulated electronic structure. An aqueous hybrid supercapacitor with AlCu-NiCoP as the positive electrode and activated carbon as the negative electrode was assembled and demonstrated a high energy density of 62.8 Wh kg–1 at a power density of 750 W kg–1 with good cycling stability.

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Iron‐Cobalt‐Cerium Multimetallic Oxides Derived from Prussian Blue Precursors: Enhanced Oxygen Evolution Electrocatalysis

Kong

et al. 2023

ChemPlusChem

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Exploring non-precious metal-based electrocatalysts is still challenging in 21 st century. In this work, a series of hexagonal bipyramidal Ce-based PBA materials as precursors with different Fe/Co metal ratios, namely as CeFe x Co 1À x -PBA, are successfully constructed via co-precipitation method and converted into corresponding metal oxides (denoted as Fe x Co 1À x CeO y ) via thermal treatment. Then, they as electrocatalysts realize highly efficient oxygen evolution reaction (OER). Especially, as-synthesized Fe 0.7 Co 0.3 CeO y electrocatalyst shows very low overpoten-tials of 320 mV at the current density of 10 mA cm À 2 and the Tafel slop of 98.4 mV dec À 1 in 1 M KOH with remarkable durability for 24 h, which was due to the synergistic effect of multi-metal FeCoCe centers. Furthermore, a two-electrode cell of Fe 0.7 Co 0.3 CeO y /NF j j Pt/C/NF realizes outstanding overall water splitting with a voltage of only 1.71 V at 10 mA cm À 2 and remarkable long-term durability, that is even superior to benchmark IrO 2 /NF j j Pt/C/NF counterpart.

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P-doped cobalt carbonate hydroxide@NiMoO4 double-shelled hierarchical nanoarrays anchored on nickel foam as a bi-functional electrode for energy storage and conversion

Cited by 31 publications

References 60 publications

Plasma-Induced Defect Engineering and Cation Refilling of NiMoO₄ Parallel Arrays for Overall Water Splitting

Plasma-Induced Defect Engineering and Cation Refilling of NiMoO₄ Parallel Arrays for Overall Water Splitting

Zeolitic Imidazole Framework Sacrificial Template-Assisted Synthesis of NiCoP Nanocages Doped with Multiple Metals for High-Performance Hybrid Supercapacitors

Iron‐Cobalt‐Cerium Multimetallic Oxides Derived from Prussian Blue Precursors: Enhanced Oxygen Evolution Electrocatalysis

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P-doped cobalt carbonate hydroxide@NiMoO4 double-shelled hierarchical nanoarrays anchored on nickel foam as a bi-functional electrode for energy storage and conversion

Cited by 31 publications

References 60 publications

Plasma-Induced Defect Engineering and Cation Refilling of NiMoO4 Parallel Arrays for Overall Water Splitting

Plasma-Induced Defect Engineering and Cation Refilling of NiMoO4 Parallel Arrays for Overall Water Splitting

Zeolitic Imidazole Framework Sacrificial Template-Assisted Synthesis of NiCoP Nanocages Doped with Multiple Metals for High-Performance Hybrid Supercapacitors

Iron‐Cobalt‐Cerium Multimetallic Oxides Derived from Prussian Blue Precursors: Enhanced Oxygen Evolution Electrocatalysis

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Product

Resources

About

Plasma-Induced Defect Engineering and Cation Refilling of NiMoO₄ Parallel Arrays for Overall Water Splitting

Plasma-Induced Defect Engineering and Cation Refilling of NiMoO₄ Parallel Arrays for Overall Water Splitting