@article{Zhang2017, 
author = {Jintao Zhang and Le Yu and Xiong Wen (David) Lou},
title = {Embedding CoS2 nanoparticles in N-doped carbon nanotube hollow frameworks for enhanced lithium storage properties},
year = {2017},
journal = {Nano Research},
volume = {10},
number = {12},
pages = {4298-4304},
keywords = {lithium-ion batteries, carbon nanotube, metal-organic framework, CoS2},
url = {https://www.sciopen.com/article/10.1007/s12274-016-1394-1},
doi = {10.1007/s12274-016-1394-1},
abstract = {The construction of metal sulfides-carbon nanocomposites with a hollow structure is highly attractive for various energy storage and conversion technologies. Herein, we report a facile two-step method for preparing a nanocomposite with CoS2 nanoparticles in N-doped carbon nanotube hollow frameworks (NCNTFs). Starting from zeolitic imidazolate framework-67 (ZIF-67) particles, in situ reduced metallic cobalt nanocrystals expedite the formation of the hierarchical hollow frameworks from staggered carbon nanotubes via a carbonization process. After a follow-up sulfidation reaction with sulfur powder, the embedded cobalt crystals are transformed into CoS2 nanoparticles. Benefitting from the robust hollow frameworks made of N-doped carbon nanotubes and highly active CoS2 ultrafine nanoparticles, this advanced nanocomposite shows greatly enhanced lithium storage properties when evaluated as an electrode for lithium-ion batteries. Impressively, the resultant CoS2/NCNTF material delivers a high specific capacity of ~937 mAh·g–1 at a current density of 1.0 A·g–1 with a cycle life longer than 160 cycles.}
}