A novel Ni<sub>3</sub>N/graphene nanocomposite as supercapacitor electrode material with high capacitance and energy density

Yu, Yu; Gao, Wenyu; Shen, Zongxu; Zheng, Qing; Wu, Hao; Wang, Xi; Song, Weiguo; Ding, Kejian

doi:10.1039/c5ta03830h

Cited by 113 publications

(57 citation statements)

References 43 publications

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“…The N 1s spectra of both samples (Figure c) show the occurrence of NiN bonding (397.5 eV), which can be ascribed to nickel nitride . Figure S3 in the Supporting Information exhibits the Ni 2p 3/2 spectra of the hNi 3 N and GQD@hNi 3 N. The peaks located at 853.4 and 855.0 eV can be ascribed to NiN . The introduction of GQD shell on the surface of hNi 3 N leads to the weaker intensity of Ni 2p 3/2 .…”

Section: Resultsmentioning

confidence: 96%

Nitrogen‐Plasma‐Activated Hierarchical Nickel Nitride Nanocorals for Energy Applications

Ouyang

Zhang

et al. 2017

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Developing transition metal nitrides with unique nanomorphology is important for many energy storage and conversion processes. Here, a facile and novel one‐step approach of growing 3D hierarchical nickel nitride (hNi3N) on Ni foam via nitrogen plasma is reported. Different from most conventional chemical synthesis, the hNi3N is obtained in much shorter growth duration (≤15 min) without any hazardous or reactive sources and oxide precursors at a moderate reaction zone temperature of ≤450 °C. Among possible multifunctionalities of the obtained nanocoral hNi3N, herein the performance in reversible lithium ion storage and electrocatalytic oxygen evolution reaction (OER) is demonstrated. The as‐obtained hNi3N delivers a considerable cycling performance and rate stability as a lithium ion battery anode, and its property can be further enhanced by coating the hNi3N surface with graphene quantum dots. The hNi3N also serves as an active OER catalyst with high activity and stability. Additionally, on the basis of controlled growth under different nitrogen plasma treatment time, the formation mechanism of the nanocoralline hNi3N is outlined for further extension to other materials. The results on time‐ and energy‐efficient nitrogen‐plasma‐based preparation of hNi3N pave the way for the development of high‐performance metal nitride electrodes for energy storage and conversion.

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Section: Resultsmentioning

confidence: 96%

Nitrogen‐Plasma‐Activated Hierarchical Nickel Nitride Nanocorals for Energy Applications

Ouyang

Zhang

et al. 2017

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“…As observed from the experimental and fitted spectra ( Figure 3a nd Figure www.chemeurj.org of Ni 2 + ,r espectively, [34,35] whicha re accompanied by ac ouple of satellite peaks located at 862.1 eV and 881.0 eV (Figure 3a). [36][37] The peaks of the metallic state forNiinthe NIA catalyst disappeareda fter calcination in air.T he binding energy of the Co 2p 3/2 ( Figure 3b)i nt he NN catalyste xhibits two peaks at about 797.8 eV and 782.3 eV,a ttributed to the 2p 1/2 and 2p 3/2 of Co 2 + ,r espectively,w hereas two satellitep eaks are located at 786.5 eV and 803.7 eV. [36][37] The peaks of the metallic state forNiinthe NIA catalyst disappeareda fter calcination in air.T he binding energy of the Co 2p 3/2 ( Figure 3b)i nt he NN catalyste xhibits two peaks at about 797.8 eV and 782.3 eV,a ttributed to the 2p 1/2 and 2p 3/2 of Co 2 + ,r espectively,w hereas two satellitep eaks are located at 786.5 eV and 803.7 eV.…”

Section: Resultsmentioning

confidence: 99%

“…The peaks located at 532.5 eV and 531.4 eV were ascribed to the chemisorbed oxygen (O ads )a nd lattice oxygen (O lat ), respectively ( Figure 3c). For both NN and NIN, two different nitrogen speciesc an be observed from the N1ss pectra at 397.9 or 398.3 eV (N1), 399.3 (N2), which can be attributed to the metal nitride peak (i.e., À3N in NiÀN bonds) [37] and Co-N x structure, [44,45] respectively.I nterestingly,a negative shifto fN 1f rom 398.3 (NN) to 397.3 eV (NIN) can be distinguished (Figure 3d). For both NN and NIN, two different nitrogen speciesc an be observed from the N1ss pectra at 397.9 or 398.3 eV (N1), 399.3 (N2), which can be attributed to the metal nitride peak (i.e., À3N in NiÀN bonds) [37] and Co-N x structure, [44,45] respectively.I nterestingly,a negative shifto fN 1f rom 398.3 (NN) to 397.3 eV (NIN) can be distinguished (Figure 3d).…”

Section: Resultsmentioning

confidence: 99%

Phosphorus and Fluorine Co‐Doping Induced Enhancement of Oxygen Evolution Reaction in Bimetallic Nitride Nanorods Arrays: Ionic Liquid‐Driven and Mechanism Clarification

Bai

Wang

et al. 2017

Chemistry A European J

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Electrocatalytic splitting of water is becoming increasingly crucial for renewable energy and device technologies. As one of the most important half-reactions for water splitting reactions, the oxygen evolution reaction (OER) is a kinetically sluggish process that will greatly affect the energy conversion efficiency. Therefore, exploring a highly efficient and durable catalyst to boost the OER is of great urgency. In this work, we develop a facile strategy for the synthesis of well-defined phosphorus and fluorine co-doped Ni Co N hybrid nanorods (HNs) by using ionic liquids (ILs; 1-butyl-3-methylimidazolium hexafluorophosphate). In comparison to the IrO catalyst, the as-obtained PF/Ni Co N HNs manifests a low overpotential of 280 mV at 10 mA cm , Tafel slope of 66.1 mV dec , and excellent durability in 1.0 m KOH solution. Furthermore, the iR-corrected electrochemical results indicate it could achieve a current density of 100 mA cm at an overpotential of 350 mV. The combination of cobalt and nickel elements, 1D mesoporous nanostructure, heteroatom incorporation, and ionic liquid-assisted nitridation, which result in faster charge transfer capability and more active surface sites, can facilitate the release of oxygen bubbles from the catalyst surface. Our findings confirm that surface heteroatom doping in bimetallic nitrides could serve as a new class of OER catalyst with excellent catalytic activity.

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“…Nickel nitride (Ni 3 N) displays excellent conductivity that contributes to its outstanding performance in various field, such as lithium-ion batteries, [30] supercapacitors, [31] and electrocatalysis. [32] It also has the strongest pseudocapacitive characteristic compared to nickel oxide and sulfide because good conductivity materials usually exhibit excellent kinetics and higher pseudocapacitance [29] but deliver low storage capacity (i.e., diffusioncontrolled capacity) for lithium-ion batteries, especially at high current densities.…”

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confidence: 99%

Phase Boundary Derived Pseudocapacitance Enhanced Nickel‐Based Composites for Electrochemical Energy Storage Devices

Long

Balogun

Luo

et al. 2017

Advanced Energy Materials

129

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trode materials for the replacement of the conventional graphite. [1][2][3][4][5][6] However, they suffer from a variety of problems such as poor conductivity for the oxides/ hydroxyls/sulfides and bad structural stability for the nitrides. [7][8][9][10][11] Some of the common methods used to solve the above problems include nanostructuring, [12] carbon coating, [13,14] mixing with carbonbased materials, [15,16] and the construction of TMC composites. [17,18] The preparation of TMC composites usually combines the advantages of each material, leading to synergistic effect. [19][20][21] According to the study by J. Maier, the phase interface present in a composite often leads to lattice mismatch and therefore creates more active sites for energy storage, enabling the electrodes to exceed their theoretical capacity. [22,23] Moreover, the lattice mismatch is also beneficial for the transformation of lithium ions and electrons, which could also result in the improved rate performance. On the other hand, the predominant pseudocapacitive processes in lithium-ion batteries make active materials show better rate capability. [24] Many electrode materials such as MoO 3 , [25] SnO, [26] and SnS [27] have been found with excellent pseudocapacitive characteristics both in lithium and sodiumion batteries because these materials store more energy at the surface or near surface of the material by Faradaic charge transfer. [1] Pseudocapacitance materials can either be intrinsic (i.e., storage properties not based on particle sizes and morphologies such as RuO 2 and MnO 2 ) or extrinsic (i.e., storage properties based on the preparation of porous or nanometersized active materials such as V 2 O 5 and MoO 2 ). [27] Moreover, pseudocapacitive contributions have been obtained in some insertion, conversion, and alloying reaction of individual or single electrode materials, while their application in composites has been less studied. [28] In view of advances of various TMC composite electrodes, it is highly challenging to study their relationship to pseudocapacitance contributions.Among the commonly reported electrode materials with pseudocapacitive properties, nickel-based materials (NiO, Ni 3 S 2 , and Ni 3 N) have attracted intense attention due to their low cost and theoretical capacity higher than that of conventional graphite. [29] Several strategies have been employed to improve the performance of energy storage devices through the development of new electrode materials. The construction of transition metal compound composite electrodes plays an important role in promoting the performance of energy storage devices. However, understandings of and insight into how to enhance the composites properties are rarely reported. Taking nickel-based compounds as an example, Ni 3 N@ Ni 3 S 2 hybrid nanosheets are reported as a high-performance anode material for lithium-ion batteries that delivers higher lithium storage properties than the pristine Ni 3 N and Ni 3 S 2 electrodes. This demonstrates that the phase boundaries between the Ni 3 N...

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A novel Ni₃N/graphene nanocomposite as supercapacitor electrode material with high capacitance and energy density

Abstract: A novel Ni3N/graphene nanocomposite has been synthesized as pseudo supercapacitor electrode material with high capacitance and energy density, due to its unique two-step oxidation/reduction reaction mechanism.

Cited by 113 publications

References 43 publications

Nitrogen‐Plasma‐Activated Hierarchical Nickel Nitride Nanocorals for Energy Applications

Nitrogen‐Plasma‐Activated Hierarchical Nickel Nitride Nanocorals for Energy Applications

Phosphorus and Fluorine Co‐Doping Induced Enhancement of Oxygen Evolution Reaction in Bimetallic Nitride Nanorods Arrays: Ionic Liquid‐Driven and Mechanism Clarification

Phase Boundary Derived Pseudocapacitance Enhanced Nickel‐Based Composites for Electrochemical Energy Storage Devices

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A novel Ni3N/graphene nanocomposite as supercapacitor electrode material with high capacitance and energy density

Abstract: A novel Ni3N/graphene nanocomposite has been synthesized as pseudo supercapacitor electrode material with high capacitance and energy density, due to its unique two-step oxidation/reduction reaction mechanism.

Cited by 113 publications

References 43 publications

Nitrogen‐Plasma‐Activated Hierarchical Nickel Nitride Nanocorals for Energy Applications

Nitrogen‐Plasma‐Activated Hierarchical Nickel Nitride Nanocorals for Energy Applications

Phosphorus and Fluorine Co‐Doping Induced Enhancement of Oxygen Evolution Reaction in Bimetallic Nitride Nanorods Arrays: Ionic Liquid‐Driven and Mechanism Clarification

Phase Boundary Derived Pseudocapacitance Enhanced Nickel‐Based Composites for Electrochemical Energy Storage Devices

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A novel Ni₃N/graphene nanocomposite as supercapacitor electrode material with high capacitance and energy density