Issue 9, 2014

One-step synthesis of Ni3S2 nanoparticles wrapped with in situ generated nitrogen-self-doped graphene sheets with highly improved electrochemical properties in Li-ion batteries

Abstract

A facile strategy has been developed to fabricate Ni3S2 nanoparticles wrapped with in situ generated N-doped graphene sheets (Ni3S2@N-G). In this strategy, the nitrogen and sulfur-containing resin is introduced as a sulfur source to form the Ni3S2 nanoparticles and to provide a source of nitrogen and carbon to grow a coating of N-doped graphene sheets on their surface. As an anode material in lithium-ion batteries (LIBs), Ni3S2@N-G exhibits a highly improved reversible capacity, as well as an excellent cycling performance and rate performance. It delivers a discharge capacity of up to 809 mA h g−1 in the 150th cycle. With the successful synthesis of Ni3S2@N-G as a starting point, this facile strategy can be used to synthesize other metal sulfides/graphene sheets nanocomposites and will immensely extend its applications.

Graphical abstract: One-step synthesis of Ni3S2 nanoparticles wrapped with in situ generated nitrogen-self-doped graphene sheets with highly improved electrochemical properties in Li-ion batteries

Supplementary files

Article information

Article type
Paper
Submitted
07 Nov 2013
Accepted
26 Nov 2013
First published
21 Jan 2014

J. Mater. Chem. A, 2014,2, 3142-3147

One-step synthesis of Ni3S2 nanoparticles wrapped with in situ generated nitrogen-self-doped graphene sheets with highly improved electrochemical properties in Li-ion batteries

J. Zhu, Y. Li, S. Kang, X. Wei and P. K. Shen, J. Mater. Chem. A, 2014, 2, 3142 DOI: 10.1039/C3TA14562J

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