Advanced Multilayered Electrode with Planar Building Blocks Structure for High-Performance Lithium-Ion Storage.

Area of Science:

• Materials Science
• Electrochemistry
• Nanotechnology

Background:

• Optimizing electrode materials is crucial for high-performance lithium-ion batteries.
• Existing research often focuses on new material synthesis or interface modification, neglecting structural innovation.
• Structural design offers a promising avenue for electrode performance enhancement.

Purpose of the Study:

• To design and fabricate an advanced electrode with a multilevel layered architecture.
• To explore the impact of structural innovation on electrode performance for lithium-ion batteries.
• To investigate the role of graphdiyne (GDY) and black phosphorus (BP) in a novel electrode structure.

Main Methods:

• Fabrication of a multilevel layered electrode structure (GDY/BP/GDY-E) using planar building blocks.
• Assembly of graphdiyne (GDY) and black phosphorus (BP) into parallel GDY/BP/GDY building blocks.
• Electrochemical testing to evaluate high-rate performance and cycling stability.

Main Results:

• The GDY/BP/GDY-E electrode exhibits superior lithium-ion migration dynamics and pseudocapacitance.
• The planar stacking structure effectively suppresses black phosphorus (BP) volume expansion and parasitic electrolyte reactions.
• Exceptional high-rate performance (1418.8 mAh g^-1 at 0.1 A g^-1) and long-term cycling stability (391.7 mAh g^-1 after 5000 cycles at 10 A g^-1) were achieved.

Conclusions:

• Structural innovation in electrode materials is a viable strategy for developing high-performance lithium-ion batteries.
• The designed multilevel layered architecture provides a new platform for advanced electrode materials.
• The GDY/BP/GDY-E electrode demonstrates significant potential for next-generation energy storage devices.