Issue 46, 2021

Scalable synthesis of a dual-confined SiO/one-dimensional carbon/amorphous carbon anode based on heterogeneous carbon structure evolution

Abstract

The modification of dual carbon-confined structures formed by one-dimensional carbon (1D-C) and amorphous carbon (a-C) exhibits great potential for improving the cycling stability of SiO anodes. To prepare the ideal dual confined structure through a continuous in situ deposition process, we have revealed the evolution law of the heterogeneous carbon structure from 1D-C to a-C through systematic kinetic experiments based on the gradual transformation of catalyst activity in the deposition process. Inspired by this law, a unique one-step deposition process was proposed to prepare the dual confined SiO/1D-C/a-C composites. The conductive network constructed by 1D-C and the stable dynamic interface composed of onion-like a-C completely encapsulated the SiO particles, which ensured the superior electrical contact of the particles during cycling and effectively avoided the electrode pulverization. Therefore, the resultant SiO/1D-C/a-C composite showed excellent cycling stability with a specific reversible capacity of 1006 mA h g−1, even after 250 cycles (capacity retention of 82.1%). Furthermore, the continuous one-step deposition process brought great possibilities for the large-scale production of SiO/1D-C/a-C.

Graphical abstract: Scalable synthesis of a dual-confined SiO/one-dimensional carbon/amorphous carbon anode based on heterogeneous carbon structure evolution

Supplementary files

Article information

Article type
Paper
Submitted
11 Sep 2021
Accepted
31 Oct 2021
First published
03 Nov 2021

J. Mater. Chem. A, 2021,9, 26236-26247

Scalable synthesis of a dual-confined SiO/one-dimensional carbon/amorphous carbon anode based on heterogeneous carbon structure evolution

H. Shi, G. Shao, B. Wu, Z. Yang, H. Zhang, P. Lv and Q. Zhu, J. Mater. Chem. A, 2021, 9, 26236 DOI: 10.1039/D1TA07821F

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