A Self-Healing Flexible Quasi-Solid Zinc-Ion Battery Using All-In-One Electrodes

Area of Science:

• Materials Science
• Electrochemistry
• Energy Storage

Background:

• Secondary batteries require self-healing and flexibility for emerging applications.
• Existing flexible batteries often lack robust structural integrity and efficient healing capabilities.

Purpose of the Study:

• To develop a self-healing, flexible quasi-solid zinc-ion battery with enhanced durability and performance.
• To investigate the electrochemical properties and mechanical resilience of the designed battery system.

Main Methods:

• Fabrication of a flexible all-in-one cathode using VS2 nanosheets on carbon cloth.
• Preparation of an anode with electrochemically deposited zinc nanowires.
• Integration with a self-healing hydrogel electrolyte for a quasi-solid-state configuration.

Main Results:

• The flexible zinc-ion battery maintained high capacity retention after being cut into six pieces and undergoing self-healing.
• Demonstrated stable capacities of 124, 125, and 114 mAh g-1 at 60°, 90°, and 180° bending angles, respectively.
• The battery exhibited stable performance even after two cycles of cutting and healing, confirming its robustness.

Conclusions:

• The developed self-healing flexible battery shows significant potential for applications in wearable electronics and devices requiring high durability.
• The combination of self-healing hydrogel electrolyte and robust all-in-one electrodes offers a promising strategy for next-generation flexible energy storage.