Detail publikace

Multifunctional Molecule-Grafted V2C MXene as High-Kinetics Potassium-Ion-Intercalation Anodes for Dual-Ion Energy Storage Devices

SABAGHI, D. POLČÁK, J. YANG, H. LI, X. MORAG, A. LI, D. NIA, A. S. KHOSRAVI, S. H. ŠIKOLA, T. FENG, X. YU, M.

Originální název

Multifunctional Molecule-Grafted V2C MXene as High-Kinetics Potassium-Ion-Intercalation Anodes for Dual-Ion Energy Storage Devices

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

Constructing dual-ion energy storage devices using anion-intercalation graphite cathodes offers the unique opportunity to simultaneously achieve high energy density and output power density. However, a critical challenge remains in the lack of proper anodes that match with graphite cathodes, particularly in sustainable electrolyte systems using abundant potassium. Here, a surface grafting approach utilizing multifunctional azobenzene sulfonic acid is reported, which transforms V2C MXene into a high-kinetics K+-intercalation anode (denoted ASA-V2C) for dual-ion energy storage devices. Importantly, the grafted azobenzene sulfonic acid offers extra K+-storage centers and fast K+-hopping sites, while concurrently acting as a buffer between V2C layers to mitigate the structural distortion during K+ intercalation/de-intercalation. These functionalities enable the V2C electrode with significantly enhanced specific capacity (173.9 mAh g(-1) vs 121.5 mAh g(-1) at 0.05 A g(-1)), rate capability (43.1% vs 12.0% at 20 A g(-1)), and cycling stability (80.3% vs 45.2% after 900 cycles at 0.05 A g(-1)). When coupled with an anion-intercalation graphite cathode, the ASA-V2C anode demonstrates its potential in a dual-ion energy storage device. Notably, the device depicts a maximum energy density of 175 Wh kg(-1) and a supercapacitor-comparable power density of 6.5 kW kg(-1), outperforming recently reported Li+-, Na+-, and K+-based dual-ion devices.

Klíčová slova

anode; dual-ion energy storage; MXenes; potassium-ion intercalation; surface grafting

Autoři

SABAGHI, D.; POLČÁK, J.; YANG, H.; LI, X.; MORAG, A.; LI, D.; NIA, A. S.; KHOSRAVI, S. H.; ŠIKOLA, T.; FENG, X.; YU, M.

Vydáno

27. 11. 2023

Nakladatel

WILEY-V C H VERLAG GMBH

Místo

WEINHEIM

ISSN

1614-6840

Periodikum

Advanced Energy Materials

Ročník

14

Číslo

3

Stát

Spolková republika Německo

Strany od

2302961

Strany do

2302969

Strany počet

9

URL

https://doi.org/10.1002/aenm.202302961

BibTex

@article{BUT187347,
  author="SABAGHI, D. and POLČÁK, J. and YANG, H. and LI, X. and MORAG, A. and LI, D. and NIA, A. S. and KHOSRAVI, S. H. and ŠIKOLA, T. and FENG, X. and YU, M.",
  title="Multifunctional Molecule-Grafted V2C MXene as High-Kinetics Potassium-Ion-Intercalation Anodes for Dual-Ion Energy Storage Devices",
  journal="Advanced Energy Materials",
  year="2023",
  volume="14",
  number="3",
  pages="9",
  doi="10.1002/aenm.202302961",
  issn="1614-6840",
  url="https://doi.org/10.1002/aenm.202302961"
}