Sandwich-like Ni2P nanoarray/nitrogen-doped graphene nanoarchitecture as a high-performance anode for sodium and lithium ion batteries.

The data presented in this article are related to the research article entitled "Sandwich-like Ni2P Nanoarray/Nitrogen-Doped Graphene Nanoarchitecture as a High-Performance Anode for Sodium and Lithium Ion Batteries (Dong et al., 2018)". This work shows the morphology and structural of Ni2P/NG/Ni2P and the electrochemial performance of Ni2P/NG/Ni2P.

Specifications table

Value of the data

Relevant data on the morphology and structural of Ni2P/NG/Ni2P.

Data to be used on understanding the structure-reactivity correlations.

These data provide electrochemical performance of Ni2P/NG/Ni2P composite as anode material in SIBs.

Data

The data presented in this manuscript have been generated in a study searching for a novel Ni2P/NG/Ni2P material via solvothermal method and phosphorization treatment. The successful fabrication of Ni2P/NG/Ni2P was confirmed by the SEM, TEM, HRTEM and XRD results. Excellent electrochemical performance of SIBs batteries was obtained for the Ni2P/NG/Ni2P composite (Fig. 3).

Fig. 3

Electrochemical performance of Ni2P/NG/Ni2P composite.

Experimental design, materials and methods

Synthesis of Ni-based precursor/GO/Ni-based precursor nanoarrays

In a typical synthesis, GO (3.0 mg) was dispersed in the solvents of 1 mL methanol (CH3OH) and 7 mL N,N-dimethylformamide (DMF) and then sonicated for 1 h to make it dispersed evenly. Then Ni(NO3)2∙6H2O (116.4 mg, 0.4 mmol) and 2-methylimidazole (32.8 mg, 0.4 mmol) were added into the above solution. After vigorous stirring for 30 min, the solution was transferred into a Teflon-lined autoclave with capacity of 23 mL and put into an oven at 85 °C for 72 h. After the autoclave was cooled to room temperature naturally, the product was collected and washed with methanol for several times. Finally, the product was dried in the vacuum at 60 °C for 6 h (Fig. 1, Fig. 2).

Fig. 1

(a) SEM and (b) TEM image of Ni2P/NG/Ni2P.

Fig. 2

(a) HRTEM and (b) XRD of Ni2P/NG/Ni2P.

Synthesis of Ni2P/NG/Ni2P nanoarrays

Ni2P/RGO/Ni2P was prepared via two steps. At first, Ni-based precursor/GO/Ni-based precursor was calcined at 450 °C in argon atmosphere for 2 h to obtain NiO/NG/NiO. Then NiO/NG/NiO and appropriate amount of NaH2PO2 powders were put into two separate positions in one closed combustion boat and then heated at 300 °C with a temperature increasing speed of 3 °C min−1 in argon atmosphere for 2 h.

Subject area	Chemistry
More specific subject area	Inorganic chemistry
Type of data	Figures
How data was acquired	Using SEM, TEM, FT-IR, XRD
Data format	Raw and analyzed data
Experimental factors	Powder samples
Experimental features	Date illustrate the morphology and structural of Ni2P/NG/Ni2P
Data source location	Jinan, China
Data accessibility	C. Wu, P. Kopold, P. A. V. Aken, J. Maier, Y. Yu, High Performance Graphene/Ni2P Hybrid Anodes for Lithium and Sodium Storage through 3D Yolk–Shell-Like Nanostructural Design, Adv. Mater. 29 (2017) 1604015.[1]