Issue 18, 2021

Carbon coated SiO nanoparticles embedded in hierarchical porous N-doped carbon nanosheets for enhanced lithium storage

Abstract

SiO based materials have attracted attention as promising anodes for lithium-ion batteries (LIBs) with high energy density. However, severe volume variation and poor conductivity limit the development of SiO based materials. In this study, carbon coated SiO nanoparticles embedded in N-doped carbon nanosheets (SiO@C/CNSs) have been fabricated through simple ball milling followed by annealing treatment, which is facile and scalable. The g-C3N4 precursor plays a multifunctional role as a sacrificial template, nitrogen source for doping, and minor carbon source. The presence of N-doped porous carbon nanosheets could minimize the volume expansion, enhance the reaction kinetics and retain the integrity of the electrode. The SiO@C/CNS anode exhibits a stable reversible capacity of 690 mA h gāˆ’1 up to 400 cycles at 1 A gāˆ’1 and excellent rate capability. The SiO@C/CNS//LiFePO4 full cell further confirms its potential as a promising anode for high capacity LIBs.

Graphical abstract: Carbon coated SiO nanoparticles embedded in hierarchical porous N-doped carbon nanosheets for enhanced lithium storage

Supplementary files

Article information

Article type
Research Article
Submitted
21 Jun 2021
Accepted
25 Jul 2021
First published
27 Jul 2021

Inorg. Chem. Front., 2021,8, 4282-4290

Carbon coated SiO nanoparticles embedded in hierarchical porous N-doped carbon nanosheets for enhanced lithium storage

Q. Zhang, B. Xi, S. Xiong and Y. Qian, Inorg. Chem. Front., 2021, 8, 4282 DOI: 10.1039/D1QI00778E

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