Pathways of Developing High-Energy-Density Flexible Lithium Batteries

Area of Science:

• Materials Science
• Electrochemistry
• Energy Storage

Background:

• Flexible lithium-based batteries (FLBs) are crucial for powering flexible and wearable electronics.
• Achieving both high energy density and excellent mechanical flexibility remains a significant challenge for FLBs.

Purpose of the Study:

• To critically discuss strategies for developing FLBs with high energy density and flexibility.
• To guide future research and development in the field of FLBs.

Main Methods:

• Summarizing industrial criteria for FLBs in wearable electronics.
• Discussing strategies and representative examples for achieving FLB flexibility.
• Benchmarking FLB performance using a flexible battery plot.
• Analyzing new materials and cell design principles.

Main Results:

• Identified key industrial criteria for flexible and wearable electronic applications.
• Presented various strategies and examples for enhancing FLB flexibility.
• Analyzed material and design approaches for high-energy-density and high-flexibility FLBs.

Conclusions:

• Simultaneously achieving high energy density and mechanical flexibility is key for advancing FLBs.
• Further research into new materials and cell designs is essential for next-generation FLBs.
• Considerations for cycling stability and safety are also important for practical FLB applications.