Development of 3D-printed soft batteries using functionalized hydrogels

使用功能化水凝胶开发3D打印软电池

• 批准号: 20K05677
• 负责人: STAUSS SVEN
• 金额: $ 2.75万
• 依托单位: Tohoku University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2020
• 资助国家: 日本
• 起止时间: 2020-04-01 至 2022-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-20K05677/
• 关键词: Hydrogel battery; 3D Printing; Biofluid battery; Stretchable battery; hydrogel batteries; bio-fluid batteries; hydrogel inks; stretchable batteries; 3D printing; ソフト電池; ハイドロゲル; 3D印刷プロセス; Hydrogel battery; 3D Printing; Biofluid battery; Stretchable battery; hydrogel batteries; bio-fluid batteries; hydrogel inks; stretchable batteries; 3D printing; ソフト電池; ハイドロゲル; 3D印刷プロセス

Several types of hydrogel-based and elastic batteries that can be activated by saliva, tear fluid, or sweat were realized. The outputs of batteries that were activated by artificial saliva typically reached values of about 0.98V. The electrode materials consisted of AgCl and Zn pastes embedded in polyvinyl-alcohol (PVA) hydrogels. In the case of batteries aimed at integration in soft contact lenses and using an artificial tear fluid (pH ~ 7) as electrolyte, similar voltage levels were reached. The AgCl | Zn batteries allowed achieving very stable outputs, even under different pH conditions, and operating times of several hours. For the stretchable batteries, the electrode inks contained microparticles of the active materials and conductive filler embedded in a hyperelastic polymer. The batteries were realized using a multimaterial 3D printing method, which allowed to fabricate complex cathode and anode geometries. The battery cells were activated by sweat and reached outputs of 1.5V. Encapsulation of the batteries with a hydrogel enabled more efficient absorption of the electrolyte and more stable battery operation over several hours.In summary, different types of biofluid-activated batteries based on functionalized hydrogels and elastic pastes were fabricated using 3D printing methods and their stable operation demonstrated in different artificial biofluids. The combination of hydrogel-based and elastic batteries developed in this project is expected to enable easier integration with artificial organs, drug delivery devices, and on-skin sensors and actuators.

可以实现几种类型的水凝胶和弹性电池，可以通过唾液，泪液或汗水激活。被人造唾液激活的电池输出通常达到约0.98V的值。电极材料由嵌入聚乙烯基醇（PVA）水凝胶中的AGCL和Zn糊状物组成。如果电池旨在在软接触透镜中整合并使用人造撕裂液（pH〜7）作为电解质，则达到了相似的电压水平。 AGCL |即使在不同的pH条件下，Zn电池也可以实现非常稳定的输出，并且工作时间为几个小时。对于可拉伸电池，电极墨水包含活性材料的微粒和嵌入热弹性聚合物中的导电填充剂。使用多材料3D打印方法实现了电池，该方法允许制造复杂的阴极和阳极几何形状。电池电池通过汗液激活，达到1.5V的输出。用水凝胶封装电池可以在几个小时内更有效地吸收电解质和更稳定的电池操作。在摘要中，使用3D打印方法制造了基于功能化水凝胶和弹性糊的不同类型的生物流体激活的电池，并且在不同的人工生物富集中证明了稳定的操作。在该项目中开发的基于水凝胶的电池和弹性电池的组合有望使与人工器官，药物输送设备以及皮肤传感器和执行器更容易集成。