| 초록 |
Aqueous zinc-ion batteries (ZIBs) are highly desirable for replacing current flammable lithium-ion batteries due to their excellent safety and low cost. However, metallic zinc anodes are highly vulnerable to aqueous electrolytes, which is always a major issue for their applications. In this work, we have firstly demonstrated the significance of surface properties of the Zn anodes for reliable cell operation, and successfully stabilized the Zn anodes by building a polymer based artificial solid electrolyte interphase (SEI) layer. We discover that Zn deposition morphologies are critically dependent on the surface hydrophilicity of the Zn anodes. More importantly, enhanced surface hydrophilicity offers more even Zn2+ flux across the surface of Zn, significantly reducing the activation energy for facile ion transport, guiding uniform stripping/plating of Zn2+ and yielding dendrite-free homogeneous Zn deposition. |
