Redox-Active Tungsten Mono-Oxo Bis(dithiolene) Complex: A Fast-Rechargeable Anode for High-Capacity Lithium-Ion...

Area of Science:

• Materials Science
• Electrochemistry
• Energy Storage

Background:

• Growing demand for electric vehicles necessitates advanced lithium-ion batteries (LIBs).
• Next-generation energy storage solutions are required beyond current LIB capabilities.
• Redox-active organometallic complexes show potential as novel electrode materials for LIBs.

Purpose of the Study:

• To investigate the Li-ion storage capability of a redox-active W-oxo bis(dithiolene) complex.
• To evaluate this complex as a novel anode material for LIBs.
• To understand the electrochemical Li-ion storage mechanism.

Main Methods:

• Electrochemical testing of the W-oxo bis(dithiolene) complex as an anode.
• Ex situ X-ray photoelectron spectroscopy (XPS) analysis.
• Computational simulations and electrochemical investigations.

Main Results:

• The W-oxo bis(dithiolene) complex anode exhibited electrochemical reversibility during lithiation-delithiation.
• Outstanding rate performance was achieved: 698 mAh g⁻¹ after 1000 cycles at 10 A g⁻¹.
• The electrochemical Li-ion storage mechanism was elucidated through various analyses.

Conclusions:

• A redox-active W-oxo bis(dithiolene) complex serves as a promising novel anode material for LIBs.
• This organometallic complex offers a new strategy for developing high-capacity LIBs.
• The study highlights the potential of organometallic complexes in advanced energy storage systems.