SCIENCE CHINA Materials, Volume 63 , Issue 9 : 1672-1682(2020) https://doi.org/10.1007/s40843-020-1328-y

Metal-organic framework-derived Ni2P/nitrogen-doped carbon porous spheres for enhanced lithium storage

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  • ReceivedJan 27, 2020
  • AcceptedApr 2, 2020
  • PublishedMay 15, 2020


Funded by

the National Natural Science Foundation of China(11705015,U1832147)

the Foundation of Jiangsu Science and Technology Department(BA2016041)

the Science and Technology Plan Project of Suzhou(SYG201738,SZS201710)


This work was partly supported by the National Natural Science Foundation of China (11705015 and U1832147), the Foundation of Jiangsu Science and Technology Department (BA2016041), the Science and Technology Plan Project of Suzhou (SYG201738 and SZS201710). We sincerely acknowledge Prof. Augusto Marcelli for polishing the language and the staff of the XAS beamlines of Beijing Synchrotron Radiation Facility for their support on this study.

Interest statement

The authors declare no conflict of interest.

Contributions statement

Tao S and Cui P engineered the experiments and wrote the paper; Chen S performed the XAFS experiments; Qian B and Song L proposed the experimental design and revised paper; Marcelli A polished the manuscript. All authors contributed to the general discussion.

Author information

Shi Tao received his PhD degree from the University of Science and Technology of China in 2016. He is currently working as an associate professor in Changshu Institute of Technology. His research focuses on the synthesis of novel electrode materials for application in lithium-ion batteries, sodium-ion batteries and the relationship between structure and property of electrodes using synchrotron radiation technique.

Bin Qian is currently a professor at the School of Electronic and Information Engineering in Changshu Institute of Technology. He received PhD degree from Nanjing University in 2009, Followed by a research stay at Tulane University in USA. His current research interests mainly include the design of novel magnetic materials and energy storage materials for batteries.

Li Song received his PhD in 2006 from the Institute of Physics, Chinese Academy of Sciences (supervised by Prof. Sishen Xie). After four years postdoctoral research at the University of Munich, Germany and Rice University, USA, he became an associate professor at Shinshu University in Japan. He was promoted to professor at the University of Science and Technology of China in 2012. His current research interests are synchrotron radiation study on low dimensional nanostructures and energy-related devices.


Supplementary information

Supporting data are available in the online version of the paper.


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  • Figure 1

    The morphology and microstructure of the as-prepared samples: (a) SEM images of the MOF-Ni; (b, c) the Ni2P/NC with different magnifications; (d–f) TEM images of the Ni2P/NC; (g) HRTEM image of the Ni2P/NC; (h) elemental mapping of the Ni2P/NC.

  • Scheme 1

    Schematic illustration of the synthesis of Ni2P/NC porous spheres.

  • Figure 2

    (a) XRD pattern , (b) the Raman spectra , (c) the TGA curves , and (d) the N2 adsorption-desorption isotherms and pore size distribution (inset) of the Ni2P/NC.

  • Figure 3

    High-resolution XPS spectra of Ni2P/NC porous spheres: (a) Ni 2p, (b) P 2p, (c) C 1s and (d) N 1s.

  • Figure 4

    Electrochemical performance of the Ni2P/NC electrode for lithium-ion batteries: (a) CVs at 0.2 mV s−1; (b) initial charge/discharge curves electrode at 0.1 A g−1; (c, d) rate performance at different current densities; (e) cycling performance at 0.5 A g−1 after 800 cycles.

  • Figure 5

    (a) CV curves at different scan rates of the Ni2P/NC electrode; (b) the relationship between logarithm cathodic and anodic peaks current and logarithm scan rates; (c) the capacitive contribution and diffusion contribution at 1.0 mV s−1; (d) contribution ratio of the capacitive capacities at different scan rates; (e) the Nyquist plots of the Ni2P/NC electrode at different cycle; (f) the relationship between the real impedance with low frequency for the Ni2P/NC electrode.

  • Figure 6

    XAFS spectroscopy of the Ni2P/NC electrode at different charge-discharge states. (a) XANES spectrum; (b) FT of the EXAFS spectra; (c) the corresponding WT-EXAFS images.

  • Figure 7

    Electrochemical evaluation of the Ni2P/NC electrode for a full cell: (a) galvanostatic charge/discharge curves at 0.1 A g−1 in the voltage range of 0.5–3.5 V; (b) the rate performance at different current densities; (c) cycling performance at the current density of 0.5 mA g−1; (d) image of the full cell that lights LIB logo with 26 LEDs.


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