Fabrication of uniform urchin-like N-doped NiCo<sub>2</sub>O<sub>4</sub>@C hollow nanostructures for high performance supercapacitors

Hu, Xiaoyu; Huang, Miaofeng; Meng, Xianhe; Ju, Xin

doi:10.1039/c9ra07678f

Cited by 14 publications

(1 citation statement)

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“…Many transition metals, rare earth metals, non-metaldoped NiCo 2 O 4 , and conjugated polymer-modified NiCo 2 O 4 materials have been reported in the literature with versatile applications. N-and P-doped NiCo 2 O 4 with oxygen vacancies have been explored for electrochemical performance for supercapacitors, electro-catalyst for O 2 and H 2 evolution reaction [15][16][17][18], and anodic material for lithium-ion batteries [19]. Lin et al [20] explored S-doped NiCo 2 O 4 nanosheet arrays as the efficient and bifunctional electrode for overall water-splitting reactions.…”

Section: Introductionmentioning

confidence: 99%

NiCo2O4 Nano-/Microstructures as High-Performance Biosensors: A Review

Kumar¹

2020

Nano-Micro Lett.

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Non-enzymatic biosensors based on mixed transition metal oxides are deemed as the most promising devices due to their high sensitivity, selectivity, wide concentration range, low detection limits, and excellent recyclability. Spinel NiCo2O4 mixed oxides have drawn considerable attention recently due to their outstanding advantages including large specific surface area, high permeability, short electron, and ion diffusion pathways. Because of the rapid development of non-enzyme biosensors, the current state of methods for synthesis of pure and composite/hybrid NiCo2O4 materials and their subsequent electrochemical biosensing applications are systematically and comprehensively reviewed herein. Comparative analysis reveals better electrochemical sensing of bioanalytes by one-dimensional and two-dimensional NiCo2O4 nano-/microstructures than other morphologies. Better biosensing efficiency of NiCo2O4 as compared to corresponding individual metal oxides, viz. NiO and Co3O4, is attributed to the close intrinsic-state redox couples of Ni3+/Ni2+ (0.58 V/0.49 V) and Co3+/Co2+ (0.53 V/0.51 V). Biosensing performance of NiCo2O4 is also significantly improved by making the composites of NiCo2O4 with conducting carbonaceous materials like graphene, reduced graphene oxide, carbon nanotubes (single and multi-walled), carbon nanofibers; conducting polymers like polypyrrole (PPy), polyaniline (PANI); metal oxides NiO, Co3O4, SnO2, MnO2; and metals like Au, Pd, etc. Various factors affecting the morphologies and biosensing parameters of the nano-/micro-structured NiCo2O4 are also highlighted. Finally, some drawbacks and future perspectives related to this promising field are outlined.

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Section: Introductionmentioning

confidence: 99%

NiCo2O4 Nano-/Microstructures as High-Performance Biosensors: A Review

Kumar¹

2020

Nano-Micro Lett.

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Practical Synthesis for N‐doped Carbon Microsphere Coated with Zn_0.76Co_0.24S Nanoparticles towards High‐performance Supercapacitors

et al. 2021

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To meet the market demand for supercapacitors with large capacitance and high stability, we successfully prepared a new type of composit material of NÀ C@Zn 0.76 Co 0.24 S with a hierarchical structure utilizing solvothermal and calcination. The nanostructures and electrochemical properties of the samples were tested and analyzed. By adjusting the mass ratio of the Ndoped carbon microsphere during the process of synthesizing composite materials, a series of comparative materials were obtained. The result of research shows that, when the mass ratio of the N-doped carbon microsphere in the composite was 55 %, the nanocomposite demonstrated excellent specific capacitance (2033.7 F g À 1 at a current density of 1 A g À 1 ) and strong cycle performance (retain 88.4 % after 5000 chargedischarge cycles), far superior to that of the single metal sulfide coating on N-doped carbon microsphere. When assembled into NÀ C@ZCS//AC asymmetric supercapacitor (ASC), the ASC exhibits a large energy density of 79.6 Wh kg À 1 while the power density is 799.7 W kg À 1 , proving the composite materials have positive significance in the application of supercapacitors.

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Enhanced corrosion resistance of bio-piezoelectric composite coatings on medical magnesium alloys

et al. 2020

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Fabrication of uniform urchin-like N-doped NiCo₂O₄@C hollow nanostructures for high performance supercapacitors

Abstract: Procedure for fabricating N-doped NiCo2O4@C hollow nanostructures.

Cited by 14 publications

References 55 publications

NiCo2O4 Nano-/Microstructures as High-Performance Biosensors: A Review

NiCo2O4 Nano-/Microstructures as High-Performance Biosensors: A Review

Practical Synthesis for N‐doped Carbon Microsphere Coated with Zn_0.76Co_0.24S Nanoparticles towards High‐performance Supercapacitors

Enhanced corrosion resistance of bio-piezoelectric composite coatings on medical magnesium alloys

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Fabrication of uniform urchin-like N-doped NiCo2O4@C hollow nanostructures for high performance supercapacitors

Abstract: Procedure for fabricating N-doped NiCo2O4@C hollow nanostructures.

Cited by 14 publications

References 55 publications

NiCo2O4 Nano-/Microstructures as High-Performance Biosensors: A Review

NiCo2O4 Nano-/Microstructures as High-Performance Biosensors: A Review

Practical Synthesis for N‐doped Carbon Microsphere Coated with Zn0.76Co0.24S Nanoparticles towards High‐performance Supercapacitors

Enhanced corrosion resistance of bio-piezoelectric composite coatings on medical magnesium alloys

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Resources

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Fabrication of uniform urchin-like N-doped NiCo₂O₄@C hollow nanostructures for high performance supercapacitors

Practical Synthesis for N‐doped Carbon Microsphere Coated with Zn_0.76Co_0.24S Nanoparticles towards High‐performance Supercapacitors