Researchers from Korea’s Gyeongsang National University, Dongguk University and Gwangju Institute of Science and Technology have developed a new method to overcome the limitations of zinc ion batteries (ZIBs), which are gaining attention as a next-generation technology.
The team explored graphene-coated stainless steel foil as an alternative current collector. They showed that a graphene coating followed by heat treatment to remove the surface oxides improves the conductivity and corrosion resistance of the material. As a result, the fabricated ZIB exhibited high specific capacities of 1.90 and 0.91 mAh cm−2 at current densities of 0.3 and 2.0 C, respectively, and demonstrated a remarkable long cycle life with a capacity retention of 88.7% for up to 1500 cycles at a current density of 1.0 C, despite a high electrode loading of 13.27 mg cm−2.
Researchers from Korea’s Gyeongsang National University, Dongguk University and Gwangju Institute of Science and Technology have developed a new method to overcome the limitations of zinc ion batteries (ZIBs), which are gaining attention as a next-generation technology.The team explored graphene-coated stainless steel foil as an alternative current collector. They showed that a graphene coating followed by heat treatment to remove the surface oxides improves the conductivity and corrosion resistance of the material. As a result, the fabricated ZIB exhibited high specific capacities of 1.90 and 0.91 mAh cm−2 at current densities of 0.3 and 2.0 C, respectively, and demonstrated a remarkable long cycle life with a capacity retention of 88.7% for up to 1500 cycles at a current density of 1.0 C, despite a high electrode loading of 13.27 mg cm−2.
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