A simple solution to a complex issue may involve changing the structure of its components. New research suggests a reconfiguration of zinc anodes, a crucial element in renewable energy sources, to enhance battery efficiency and decrease reliance on fossil fuels. This innovative approach could reduce costs and side reactions, ultimately improving the "green" rating of the rechargeable zinc metal battery (RZMB). The findings were recently published in Energy Materials and Devices.
RZMBs offer promising energy storage solutions for both traditional and wearable technologies. However, the conventional zinc foil anode poses challenges for flexible and wearable tech, which have become ubiquitous in modern society. Therefore, adapting and improving RZMBs to accommodate these advancements and enhance traditional battery storage is imperative.
While zinc anodes show potential, they are still hindered by side reactions, such as
- 3D Zn anodes
- 3D printed Zn anodes
- printed Zn anodes
- imprinted Zn anodes
- linear Zn anodes
A 3-dimensional Zn anode can minimize dendrite formation by providing a larger surface area for ion diffusion. 3D printing technology can also make the production process more cost-effective without compromising precision. Imprinted Zn anodes function by utilizing a conductivity and hydrophilicity gradient to prevent zinc ion aggregation. For flexible and wearable tech, printed and linear anodes are effective, with linear anodes utilizing a zinc fiber-like battery and printed anodes utilizing an engraved electrode pattern on self-adhesive paper. This paper is then applied to a variety of substrates, such as wood, skin, paper, or glass.
For these advancements to be widely applicable, further optimization is necessary. This includes researching how different RZMBs interact with the electrolyte to ensure safety and chemical stability. The substrates must also be suitable, with the ability to withstand zinc stripping and electroplating, maintain their structure, resist corrosion, and attract zinc ions (zinciphilicity) for uniform deposition. Additionally, new electrolyte options may need to be explored to complement different zinc anode configurations. By optimizing both the electrolyte and zinc anode, the ionic transport rate can be improved, resulting in overall battery performance enhancement.