1 research outputs found
ZIF‑8 Cooperating in TiN/Ti/Si Nanorods as Efficient Anodes in Micro-Lithium-Ion-Batteries
Zeolite imidazolate framework-8 (ZIF-8)
nanoparticles embedded
in TiN/Ti/Si nanorod (NR) arrays without pyrolysis have shown increased
energy storage capacity as anodes for lithium ion batteries (LIBs).
A high capacity of 1650 μAh cm<sup>–2</sup> has been
achieved in this ZIF-8 composited multilayered electrode, which is
∼100 times higher than the plain electrodes made of only silicon
NR. According to the electrochemical impedance spectroscopy (EIS)
and <sup>1</sup>H nuclear magnetic resonance (NMR) characterizations,
the improved diffusion of lithium ions in ZIF-8 and boosted electron/Li<sup>+</sup> transfer by the ZIF-8/TiN/Ti multilayer coating are proposed
to be responsible for the enhanced energy storage ability. The first-principles
calculations further indicate the favorable accessibility of lithium
with appropriate size to diffuse in the open pores of ZIF-8. This
work broadens the application of ZIF-8 to silicon-based LIBs electrodes
without the pyrolysis and provides design guidelines for other metal–organic
frameworks/Si composite electrodes