Sarma Choudhury Sagnik, Katiyar Nitish, Saha Ranamay, Bhattacharya Shantanu
Microsystems Fabrication Laboratory, Indian Institute of Technology, Kanpur, 208016, India.
Department of Mechanical Engineering, Indian Institute of Technology, Kanpur, 208016, India.
Sci Rep. 2024 Jan 18;14(1):1597. doi: 10.1038/s41598-024-51871-5.
Energy storage devices (ESD) which are intended to power electronic devices, used in close contact of human skin, are desirable to be safe and non-toxic. In light of this requirement, Zn based energy storage devices seem to provide a viable pathway as they mostly employ aqueous based electrolytes which are safe and non-toxic in their functioning. Additionally, having a flexible ESD will play a crucial role as it will enable the ESD to conform to the varying shapes and sizes of wearable electronics which they energize. In this work, we have developed an inkjet-printed Zinc ion battery (IPZIB) with planar electrode configuration over bond paper substrate. Zn has been used as the negative electrode, MnO is used as the positive electrode with Poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) as the active binder. Conducting tracks of reduced graphene oxide (rGO) are used to construct the current collector on the paper substrate. The fabricated IPZIB delivered a high discharge capacity of 300.14 mAh g at a current density of 200 mA g. The energy density of the IPZIB is observed as 330.15 Wh kg at a power density of 220 W kg and retains an energy density of 94.36 Wh kg at a high power density of 1650 W kg. Finally, we have demonstrated the capability of the IPZIB to power a LED at various bending and folding conditions which indicates its potential to be used in the next generation flexible and wearable electronic devices.
旨在为电子设备供电且与人体皮肤紧密接触使用的储能装置（ESD），需要具备安全性和无毒特性。鉴于这一要求，锌基储能装置似乎提供了一条可行途径，因为它们大多采用水性电解质，这些电解质在运行过程中是安全无毒的。此外，拥有柔性储能装置将发挥关键作用，因为这将使储能装置能够贴合其所供电的可穿戴电子产品的各种形状和尺寸。在这项工作中，我们在债券纸基板上开发了一种具有平面电极配置的喷墨打印锌离子电池（IPZIB）。锌用作负极，MnO用作正极，聚（3,4 - 乙撑二氧噻吩）聚苯乙烯磺酸盐（PEDOT:PSS）用作活性粘合剂。还原氧化石墨烯（rGO）的导电轨迹用于在纸基板上构建集流体。所制备的IPZIB在200 mA g的电流密度下具有300.14 mAh g的高放电容量。在220 W kg的功率密度下，IPZIB的能量密度为330.15 Wh kg，在1650 W kg的高功率密度下仍保持94.36 Wh kg的能量密度。最后，我们展示了IPZIB在各种弯曲和折叠条件下为LED供电的能力，这表明其在下一代柔性和可穿戴电子设备中应用的潜力。
