Issue 26, 2019

A novel strategy for the synthesis of highly stable ternary SiOx composites for Li-ion-battery anodes

Abstract

SiOx is a promising anode material for lithium-ion batteries (LIBs) due to its relatively high capacity. Nevertheless, the poor conductivity and large volume expansion of SiOx upon Li+ insertion/extraction limit its application. Herein, a novel strategy for preparing ternary Ni/SiOx/nitrogen-doped carbon (NSC) composites has been developed through in situ transformation of a Ni3Si2O5(OH)4/nitrogen-doped carbon precursor derived from dried bamboo leaves. The 3D interconnected SiOx/nitrogen-doped carbon (SC) framework provides sufficient void spaces for relieving the volume change during the lithiation process while facilitating electrolyte infiltration and lithium ion diffusion processes. The growth of uniform Ni nanoparticles (NPs) on the surface of the SC matrix restricts the formation of cracks, reduces volume expansion during the lithiation process, and effectively improves the electrical conductivity of SiOx. The optimized sample delivers a high discharge capacity of 864.6 mA h g−1 after 70 cycles at 200 mA g−1 and a superior rate capability of 289.8 mA h g−1 at 10 A g−1. The electrode delivers a capacity of 427.6 mA h g−1 even at 5 A g−1 after 1000 cycles along with outstanding capacity retention (∼100%). Our method provides insight into the utilization of biomass towards high performance energy storage through simple and low-cost procedures.

Graphical abstract: A novel strategy for the synthesis of highly stable ternary SiOx composites for Li-ion-battery anodes

Supplementary files

Article information

Article type
Paper
Submitted
18 אפר 2019
Accepted
23 מאי 2019
First published
17 יונ 2019

J. Mater. Chem. A, 2019,7, 15969-15974

A novel strategy for the synthesis of highly stable ternary SiOx composites for Li-ion-battery anodes

X. Guo, Y. Zhang, F. Zhang, Q. Li, D. H. Anjum, H. Liang, Y. Liu, C. Liu, Husam N. Alshareef and H. Pang, J. Mater. Chem. A, 2019, 7, 15969 DOI: 10.1039/C9TA04062E

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements