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Zn2GeO4 rods/graphene supported on Ni foam as binder-free anode for enhanced Na ion storage performance.
- Source :
- Journal of Materials Science: Materials in Electronics; Jul2024, Vol. 35 Issue 20, p1-11, 11p
- Publication Year :
- 2024
-
Abstract
- Given the abundance of sodium resources, sodium-ion batteries (SIBs) have been considered as one of the candidates for storing energy on a large scale. However, the slower sodium ion transport in the electrode limits its use. Here, we report a binder free Zn<subscript>2</subscript>GeO<subscript>4</subscript>-graphene Ni foam integrated anode for Na ion storage. The obtained integrated anode was supported by nickel foam without binder, the Zn<subscript>2</subscript>GeO<subscript>4</subscript> exhibits nanotube structure, and the graphene was coating on the Zn<subscript>2</subscript>GeO<subscript>4</subscript>. The Zn<subscript>2</subscript>GeO<subscript>4</subscript> nanorods are able to coalesce with each other to form porous structures. The binder free Zn<subscript>2</subscript>GeO<subscript>4</subscript>-graphene Ni foam integrated anode electrode delivered a discharge capacity of 427.7 mAh g<superscript>−1</superscript> at 0.1 A g<superscript>−1</superscript> after 200 cycles. And at a high current density of 2 A g<superscript>−1</superscript> a favorable rate capacity of 391.4 mAh g<superscript>−1</superscript> could be achieved, twice that of the Zn<subscript>2</subscript>GeO<subscript>4</subscript>-graphene powder electrode. The outstanding electrochemical performance can be attributed to the synergistic effect between in situ grown Zn<subscript>2</subscript>GeO<subscript>4</subscript> nanorods and graphene sheets, which enhanced the conductivity and stabilized the electrode structure during the cycling process, as well as the improved electrochemical reaction kinetics due to in-situ growth. This work sheds light on the design of Ge-based ternary oxide anodes and provides a promising anode for high performance SIBs. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 09574522
- Volume :
- 35
- Issue :
- 20
- Database :
- Complementary Index
- Journal :
- Journal of Materials Science: Materials in Electronics
- Publication Type :
- Academic Journal
- Accession number :
- 178549930
- Full Text :
- https://doi.org/10.1007/s10854-024-13182-3