Loading…
Rice husk-derived nano-SiO assembled on reduced graphene oxide distributed on conductive flexible polyaniline frameworks towards high-performance lithium-ion batteries
By combining rice husk-derived nano-silica and reduced graphene oxide and then polymerizing PANI by in situ polymerization, we created polyaniline-coated rice husk-derived nano-silica@reduced graphene oxide (PANI-SiO 2 @rGO) composites with excellent electrochemical performance. ATR-FTIR and XRD ana...
Saved in:
Published in: | RSC advances 2022-05, Vol.12 (23), p.14621-1463 |
---|---|
Main Authors: | , , , , , |
Format: | Article |
Language: | |
Online Access: | Get full text |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
Summary: | By combining rice husk-derived nano-silica and reduced graphene oxide and then polymerizing PANI by
in situ
polymerization, we created polyaniline-coated rice husk-derived nano-silica@reduced graphene oxide (PANI-SiO
2
@rGO) composites with excellent electrochemical performance. ATR-FTIR and XRD analyses confirm the formation of PANI-SiO
2
@rGO, implying that SiO
2
@rGO served as a template in the formation of composites. The morphology of PANI-SiO
2
@rGO was characterized by SEM, HRTEM, and STEM, in which SiO
2
nanoparticles were homogeneously loaded on graphene sheets and the PANI fibrous network uniformly covers the SiO
2
@rGO composites. The structure can withstand the large volume change as well as retain electronic conductivity during Li-ion insertion/extraction. Over 400 cycles, the assembled composite retains a high reversible specific capacity of 680 mA h g
−1
at a current density of 0.4 A g
−1
, whereas the SiO
2
@rGO retains only 414 mA h g
−1
at 0.4 A g
−1
after 215 cycles. The enhanced electrochemical performance of PANI-SiO
2
@rGO was a result of the dual protection provided by the PANI flexible layer and graphene sheets. PANI-SiO
2
@rGO composites may pave the way for the development of advanced anode materials for high-performance lithium-ion batteries.
By combining rice husk-derived nano-silica and reduced graphene oxide and then polymerizing PANI by
in situ
polymerization, we created polyaniline-coated rice husk-derived nano-silica@reduced graphene oxide composites with excellent electrochemical performance. |
---|---|
ISSN: | 2046-2069 |
DOI: | 10.1039/d2ra00526c |