A simple, low cost, and lightweight three-dimensional (3D) primary alkaline Zn/Fe₃O₄ origami-battery fabricated from Whatman 1 paper was developed. The battery was created using printed wax to define the hydrophobic and hydrophilic barriers and active electrocatalytic materials for fabricating the electrodes. The boat-shaped 3D-battery consisted of two screen-printed Zn/Fe₃O₄ batteries connected in series that were activated with a small volume of aqueous KOH solution. The metallic electrodes were first characterized outside the folded battery using electrochemical techniques. Subsequently, the electrodes and separator were assembled together in a triangle-shaped battery resembling the main structure of the boat-shaped 3D-device and this triangle-shaped battery was further optimized. The addition of water triggered the activation of the 3D battery delivering a maximum current and power of 7 mA and 3 mW, respectively. The 3D-Zn/Fe₃O₄-battery displayed an OCP of 2.2 V and a maximum current and power of 22 mA and 7.5 mW, respectively, in the presence of 6 M KOH electrolyte. These results demonstrate the potential of 3D origami-based structures and Zn/Fe₃O₄ batteries as an alternative low cost energy source to power portable devices.

开发了一种由Whatman 1纸制成的简单，低成本，轻便的三维（3D）碱性碱性Zn / Fe ₃ O ₄折纸电池。电池是使用印刷蜡制成的，以定义疏水性和亲水性阻隔层以及用于制造电极的活性电催化材料。船形3D电池由两个丝网印刷的Zn / Fe ₃ O _4组成串联连接的电池，并用少量KOH水溶液激活。首先使用电化学技术在折叠电池的外部表征金属电极。随后，将电极和隔板组装成类似于船形3D装置的主要结构的三角形电池，并且进一步优化了该三角形电池。加水触发了3D电池的激活，分别提供了7 mA和3 mW的最大电流和功率。在6 M KOH电解质存在下，3D-Zn / Fe ₃ O ₄电池的OCP值为2.2 V，最大电流和功率分别为22 mA和7.5 mW。这些结果证明了基于3D折纸的结构和Zn / Fe的潜力₃ O ₄电池可为便携式设备提供替代的低成本能源。