National Supercomputer Research Center of Advanced Materials, Advanced Materials Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250014, P. R. China.
Department of Chemistry, Shanghai Key Lab of Molecular Catalysis and Innovative Materials iChEM, Fudan University, Shanghai 200433, P. R. China.
ACS Appl Mater Interfaces. 2021 Feb 24;13(7):8285-8293. doi: 10.1021/acsami.0c19740. Epub 2021 Feb 14.
Transient supercapacitors (TSCs), a new type of advanced supercapacitor (SC) that can completely dissolve with environmentally and biologically benign byproducts after performing their specified function, have broad application prospects in the fields of green electronics, implantable devices, personalized medicine, military security, and other fields. However, research on TSCs is still in its infancy, and there are still many challenges to be solved, such as the complex preparation process and low energy density. Herein, we report a facile superassembly manufacturing method for an implantable and fully biodegradable three-dimensional network Zn@PPy hybrid electrode by screen printing and electrochemical deposition. The produced superassembled interdigital pseudocapacitor exhibits superior electrochemical performances due to the high capacitances and excellent rate performances of the pattern Zn@PPy electrode and NaCl/agarose electrolyte. An optimized biodegradable SC exhibits a maximum energy density of 0.394 mW h cm and can be fully degraded in 30 days without any adverse effects in the host organism. This work provides a new platform for transient electronic technology for diverse implantable electronic applications.
瞬态超级电容器 (TSC) 是一种新型的先进超级电容器 (SC)，在完成指定功能后，可以完全溶解为环境和生物友好的副产品，在绿色电子、可植入设备、个性化医疗、军事安全等领域具有广阔的应用前景。然而，TSC 的研究仍处于起步阶段，仍有许多挑战需要解决，例如复杂的制备工艺和低能量密度。在这里，我们报告了一种通过丝网印刷和电化学沉积制造可植入和完全可生物降解的三维网络 Zn@PPy 混合电极的简易超组装制造方法。由于图案化 Zn@PPy 电极和 NaCl/琼脂糖电解质的高电容和优异的倍率性能，所制备的超组装叉指赝电容器表现出优异的电化学性能。优化后的可生物降解 SC 的最大能量密度为 0.394 mW h cm，可在 30 天内完全降解，而宿主组织内没有任何不良反应。这项工作为各种可植入电子应用的瞬态电子技术提供了一个新的平台。
