Developing a novel lithium-ion battery anode material via thiol functionalization of diatom frustules plus Ag modification.
iScience
; 27(2): 108850, 2024 Feb 16.
Article
in En
| MEDLINE
| ID: mdl-38303716
ABSTRACT
The biosilicification of diatoms allows for the customization of the synthesis of functionalized diatom frustules. The S active sites (-SH) on diatom frustules were created by adding the organic silicon sources tetramethoxysilane (TMOS) and (3-mercaptopropyl)trimethoxysilane (MPTMS). The mechanisms of adsorption-reduction and the indirect effects of S active sites on electrochemical performance were declared. The DBS@C-Ag-3 anode material sourced from the cultivation condition with a silicon source of TMOSMPTMS = 31 shows the best comprehensive performance and delivers a discharge capacity of â¼660 mAh·g-1 after 1000 cycles at 1 A·g-1. The electrochemical performance of DBS@C-Ag anode materials is also found to be dominated by structure at high temperatures and conductivity at low temperatures. Such a diatom frustule structure with sulfhydryl functionalization is promising for anode materials, and it suggests a biological strategy for creating other electrode materials by modifying them with metals to improve electrochemical performances.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Language:
En
Journal:
IScience
Year:
2024
Document type:
Article
Affiliation country:
China
Country of publication:
Estados Unidos