Back to Search
Start Over
Dual-ion carrier storage through Mg2+ addition for high-energy and long-life zinc-ion hybrid capacitor.
- Source :
- International Journal of Minerals, Metallurgy & Materials; Jan2024, Vol. 31 Issue 1, p179-185, 7p
- Publication Year :
- 2024
-
Abstract
- Cation additives can efficiently enhance the total electrochemical capabilities of zinc-ion hybrid capacitors (ZHCs). However, their energy storage mechanisms in zinc-based systems are still under debate. Herein, we modulate the electrolyte and achieve dual-ion storage by adding magnesium ions. And we assemble several Zn//activated carbon devices with different electrolyte concentrations and investigate their electrochemical reaction dynamic behaviors. The zinc-ion capacitor with Mg<superscript>2+</superscript> mixed solution delivers 82 mAh·g<superscript>−1</superscript> capacity at 1 A·g<superscript>−1</superscript> and maintains 91% of the original capacitance after 10000 cycling. It is superior to the other assembled zinc-ion devices in single-component electrolytes. The finding demonstrates that the double-ion storage mechanism enables the superior rate performance and long cycle lifetime of ZHCs. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 16744799
- Volume :
- 31
- Issue :
- 1
- Database :
- Complementary Index
- Journal :
- International Journal of Minerals, Metallurgy & Materials
- Publication Type :
- Academic Journal
- Accession number :
- 175021666
- Full Text :
- https://doi.org/10.1007/s12613-023-2724-4