Electrodeposited cation-intercalated δ-MnO2 nanosheets on free-standing graphitic nanofibers for aqueous magnesium-ion supercapacitors

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F25%3A43932255" target="_blank" >RIV/60461373:22310/25:43932255 - isvavai.cz</a>
Result on the web
<a href="https://www.sciencedirect.com/science/article/abs/pii/S2352152X25022844" target="_blank" >https://www.sciencedirect.com/science/article/abs/pii/S2352152X25022844</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.est.2025.117571" target="_blank" >10.1016/j.est.2025.117571</a>

Result language
angličtina
Original language name
Electrodeposited cation-intercalated δ-MnO2 nanosheets on free-standing graphitic nanofibers for aqueous magnesium-ion supercapacitors
Original language description
This study presents a straightforward electrodeposition method to produce nanostructured K+-intercalated S-MnO2 (KMO) on free-standing graphitic nanofibers (GNFs), known as GNF@KMO. This serves as a highly effective binder-free cathode for aqueous magnesium-ion capacitors (AMICs). GNF@KMO boasts a distinctive structural design that improves electronic and ionic conductivity, enabling the electrode to demonstrate excellent electrolyte penetration at the interface. The resultant GNF@KMO composite electrode achieved a specific capacity of 91.18 mAh g- 1 at a current density of 0.5 A g-1. Even at a higher current density of 4 A g- 1, it retained a capacity of 51.88 mAh g- 1, showcasing a capacity retention of 57 %. Furthermore, the AMIC device utilizing the GNF@KMO cathode and activated carbon anode exhibited an impressive capacity of 32.51 mAh g- 1, retaining around 88.24 % of its initial capacity after 20,000 cycles at a current density of 2.0 A g-1. This research highlights the potential of one-dimensional carbon materials decorated with electrodeposited cation-intercalated S-MnO2 nanostructures as promising candidates for efficient cathode materials in Mg-ion energy storage systems.
Czech name
—
Czech description
—

Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
20700 - Environmental engineering

Project
—
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Similar results(10)