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ZIF-67-Derived CoSe/NC Composites as Anode Materials for Lithium-Ion Batteries.

ABSTRACT: As a typical metal selenide, CoSe is a kind of foreground anode material for lithium-ion batteries (LIBs) because of its two-dimensional layer structure, good electrical conductivity, and high theoretical capacity. In this work, the original CoSe/N-doped carbon (CoSe/NC) composites were synthesized using ZIF-67 as a precursor, in which the CoSe nanoparticles are encapsulated in NC nanolayers and they are connected through C-Se bonds. The coating structure and strong chemical coupling make the NC nanolayers could better effectively enhance the lithium storage properties of CoSe/NC composites. As a consequence, the CoSe/NC composites deliver a reversible capacity of 310.11 mAh g-1 after 500?cycles at 1.0 A g-1. Besides, the CoSe/NC composites show a distinct incremental behavior of capacity.

SUBMITTER: Li Z

PROVIDER: S-EPMC6889125 | biostudies-literature | 2019 Dec

REPOSITORIES: biostudies-literature

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ZIF-67-Derived CoSe/NC Composites as Anode Materials for Lithium-Ion Batteries.

Li Zongyang Z Zhang Lian Ying LY Zhang Lei L Huang Jiamu J Liu Hongdong H

Nanoscale research letters 20191202 1

As a typical metal selenide, CoSe is a kind of foreground anode material for lithium-ion batteries (LIBs) because of its two-dimensional layer structure, good electrical conductivity, and high theoretical capacity. In this work, the original CoSe/N-doped carbon (CoSe/NC) composites were synthesized using ZIF-67 as a precursor, in which the CoSe nanoparticles are encapsulated in NC nanolayers and they are connected through C-Se bonds. The coating structure and strong chemical coupling make the NC ...[more]

PMID: 31792656

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