Integrated manufacturing of REciclable multi-material COmposites for the TRANSport sector
Enhancing the Filler Utilization of Composite Gel Electrolytes via In Situ Solution?Processable Method for Sustainable Sodium?Ion Batteries
A solution?processable method is developed to fabricate composite gel electrolytes with high filler utilization. Uniform distributed UIO?66?NH2 fillers enhance its mechanical toughness, ionic conductivity, and cation transference number, and stabilize the electrode?electrolyte interface. This strategy enables the sodium?ion batteries to achieve excellent cycling and wide?temperature performance.The composite gel electrolyte (CGE), which combines the advantages of inorganic solid?state electrolytes and solid polymer electrolytes, is regarded as the ultimate candidate for constructing batteries with high safety and superior electrode?electrolyte interface contact. However, the ubiquitous agglomeration of nanofillers results in low filler utilization, which seriously reduces structural uniformity and ion transport efficiency, thus restricting the development of consistent and durable batteries. Herein, a solution?processable method to in situ construct CGE with high filler utilization is introduced. The homogeneous metal–organic framework fillers contribute to uniform ionic and electronic filed distribution, realizing a stable electrode?electrolyte interface. Consequently, the CGE with high filler utilization achieves an ultra?long lifespan of 10 000 cycles with a capacity retention of 80.2%. This work provides guidance for constructing high?performance CGEs in electrochemical energy?storage devices.
» Publication Date: 24/10/2024
This project has received funding from the European Union's Horizon 2020 research and innovation programme under grant agreement Nº 768737
