Breakthrough in High-Voltage Lithium Batteries: Development of Double-Layer Gel Electrolyte

Researchers from Shanghai Jiao Tong University have made a significant breakthrough in the development of high-voltage lithium batteries, utilizing a novel double-layer gel polymer electrolyte. According to the study published in the Chemical Engineering Journal, this innovative electrolyte exhibits excellent cycling performance and stability, paving the way for the next generation of high-voltage lithium metal batteries. The researchers employed in-situ polymerization to construct the double-layer gel polymer electrolyte based on poly (butyl acrylate) and poly (1,3-dioxolane). This groundbreaking research has been peer-reviewed and has the potential to revolutionize the field of electronics.

Key Takeaways:

• The researchers constructed a novel ester-polyether double-layer gel polymer electrolyte via in-situ polymerization, utilizing poly (butyl acrylate) and poly (1,3-dioxolane).
• The double-layer electrolyte demonstrated outstanding stability towards high-voltage cathode and lithium metal anode, exhibiting a capacity retention of 91.6% after 250 cycles at 0.5C with a cut-off voltage of 4.5 V.
• The quasi-solid-state LiCoO2|Li cells showed excellent cycling performance, with the transportation mechanism of lithium ions across the PBA|PDOL interface being discussed and clarified.
• The researchers employed a modified separator to initiate ring-opening polymerization of the anti-oxidation ether-based layer, optimizing lithium deposition.
• The study received financial support from the National Natural Science Foundation of China (NSFC) and was conducted by researchers Huanan Duan, Qiwen Chen, Yitong Liang, Qianyi Zhang, Hezhou Liu, and Shaoping Wu.

Statistics:

• The capacity retention of 91.6% after 250 cycles at 0.5C with a cut-off voltage of 4.5 V.
• The double-layer electrolyte demonstrates outstanding stability towards high-voltage cathode and lithium metal anode.
• The quasi-solid-state LiCoO2|Li cells exhibit excellent cycling performance, with 91.6% capacity retention after 250 cycles at 0.5C with a cut-off voltage of 4.5 V.

Sources:

• Insight Into Double-layer Gel Electrolyte for High-voltage Lithium Batteries: Li-ion Transportation Across the Interface Within the Electrolyte. Chemical Engineering Journal, 2025;519.
• Chemical Engineering Journal. Elsevier Science Sa, PO Box 564, 1001 Lausanne, Switzerland.
• NewsRx. Reports from Shanghai Jiao Tong University Add New Data to Findings in Electronics (Insight Into Double-layer Gel Electrolyte for High-voltage Lithium Batteries: Li-ion Transportation Across the Interface Within the Electrolyte). News of Science. September 7, 2025; p 2663.