Recently, our group has developed an integrated configuration design for flexible and ultrafast rechargeable dual-ion battery. In this design, the cathode/anode active materials and the positive/negative current collectors are creatively integrated into a porous separator, breaking through the conventional battery structure. This novel design simplifies the fabrication process, and improved the charge-discharge performance significantly. The enhancement of rate performance was achieved by cooperative effect of two aspects. First, the interfacial contact area between the active materials and electrolyte was increased greatly, which reduced the transport resistance of electrons and ions. Second, the integrated interfacial contact of active materials and current collector further enhanced the transport efficiency of electrons.
The research results showed an ultrahigh rate capability up to 120 C (charging/discharging time within 30 s) and superior cycling stability.
This work entitled “Integrated Configuration Design for Ultrafast Rechargeable Dual-Ion Battery” have been published online in Advanced Energy Materials and applied for an international invention patent.
Some media reports on the research results
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