Gel polymer electrolytes based on single-ion-conducting polyelectrolyte (SICP) and SICP-functionalized carbon...

Area of Science:

• Materials Science
• Electrochemistry
• Polymer Science

Background:

• Gel polymer electrolytes (GPEs) are crucial for advanced battery technologies.
• Enhancing ionic conductivity and lithium transference in GPEs remains a key challenge.
• Functionalized nanomaterials offer potential solutions for improving GPE performance.

Purpose of the Study:

• To synthesize and evaluate multi-walled carbon nanotubes functionalized with single-ion-conducting polyelectrolytes (MWCNT-SICP).
• To investigate the impact of MWCNT-SICP incorporation on the ionic conductivity and lithium transference number of GPEs.
• To explore the potential of MWCNT-SICP as a platform for designing high-performance GPEs.

Main Methods:

• Synthesis of multi-walled carbon nanotubes functionalized with single-ion-conducting polyelectrolytes (MWCNT-SICP).
• Incorporation of small amounts (0.02 wt%) of MWCNT-SICP into gel polymer electrolytes.
• Measurement of ionic conductivity and lithium transference number in the resulting GPEs.

Main Results:

• A significant enhancement in ionic conductivity by a factor of 2.1 was achieved with minimal MWCNT-SICP addition.
• A high lithium transference number of 0.87 was obtained in the MWCNT-SICP modified GPEs.
• Demonstrated the effectiveness of MWCNT-SICP in improving key GPE properties.

Conclusions:

• MWCNT-SICP significantly enhances ionic conductivity and lithium transference in GPEs.
• Even trace amounts of MWCNT-SICP yield substantial improvements.
• MWCNT-SICP presents a promising platform for the development of next-generation GPEs for energy storage applications.