当前位置：
X-MOL 学术
›
ACS Appl. Mater. Interfaces
›
论文详情
Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
Giant Functional Properties in Porous Electroceramics through Additive Manufacturing of Capillary Suspensions
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2022-01-05 , DOI: 10.1021/acsami.1c19297 David Menne 1 , Lucas Lemos da Silva 2 , Magnus Rotan 3 , Julia Glaum 3 , Manuel Hinterstein 2 , Norbert Willenbacher 1
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2022-01-05 , DOI: 10.1021/acsami.1c19297 David Menne 1 , Lucas Lemos da Silva 2 , Magnus Rotan 3 , Julia Glaum 3 , Manuel Hinterstein 2 , Norbert Willenbacher 1
Affiliation
|
Dedicated hierarchical structuring of functional ceramics can be used to shift the limits of functionality. This work presents the manufacturing of highly open porous, hierarchically structured barium titanate ceramics with 3-3 connectivity via direct ink writing of capillary suspension-type inks. The pore size of the printed struts (∼1 μm) is combined with a printed mesostructure (∼100 μm). The self-organized particle network, driven by strong capillary forces in the ternary solid/fluid/fluid ink, results in a high strut porosity, and the distinct flow properties of the ink allow for printing high strut size to pore size ratios, resulting in total porosities >60%. These unique and highly porous additive manufactured log-pile structures with closed bottom and top layers enable tailored dielectric and electromechanical coupling, resulting in an energy harvesting figure of merit FOM33 more than four times higher than any documented data for barium titanate. This clearly demonstrates that combining additive manufacturing of capillary suspensions in combination with appropriate sintering allows for creation of complex architected 3D structures with unprecedented properties. This opens up opportunities in a broad variety of applications, including electromechanical energy harvesting, electrode materials for batteries or fuel cells, thermoelectrics, or bone tissue engineering with piezoelectrically stimulated cell growth.
中文翻译：
通过毛细管悬浮液的增材制造实现多孔电陶瓷的巨大功能特性
功能陶瓷的专用分层结构可用于改变功能的限制。这项工作展示了具有 3-3 连通性的高度开放的多孔、分层结构的钛酸钡陶瓷的制造毛细管悬浮型墨水的直接墨水书写。打印支柱的孔径（~1 μm）与打印的介观结构（~100 μm）相结合。由三元固体/流体/流体油墨中的强大毛细力驱动的自组织颗粒网络导致高支柱孔隙率，并且油墨的独特流动特性允许打印高支柱尺寸与孔径比，从而导致总孔隙率>60%。这些独特且高度多孔的增材制造原木桩结构具有封闭的底层和顶层，可实现定制的介电和机电耦合，从而实现能量收集品质因数 FOM 33比任何记录的钛酸钡数据高出四倍以上。这清楚地表明，将毛细管悬浮液的增材制造与适当的烧结相结合，可以创建具有前所未有特性的复杂架构 3D 结构。这为广泛的应用开辟了机会，包括机电能量收集、电池或燃料电池的电极材料、热电学或具有压电刺激细胞生长的骨组织工程。
更新日期：2022-01-19
中文翻译：
通过毛细管悬浮液的增材制造实现多孔电陶瓷的巨大功能特性
功能陶瓷的专用分层结构可用于改变功能的限制。这项工作展示了具有 3-3 连通性的高度开放的多孔、分层结构的钛酸钡陶瓷的制造毛细管悬浮型墨水的直接墨水书写。打印支柱的孔径（~1 μm）与打印的介观结构（~100 μm）相结合。由三元固体/流体/流体油墨中的强大毛细力驱动的自组织颗粒网络导致高支柱孔隙率，并且油墨的独特流动特性允许打印高支柱尺寸与孔径比，从而导致总孔隙率>60%。这些独特且高度多孔的增材制造原木桩结构具有封闭的底层和顶层，可实现定制的介电和机电耦合，从而实现能量收集品质因数 FOM 33比任何记录的钛酸钡数据高出四倍以上。这清楚地表明，将毛细管悬浮液的增材制造与适当的烧结相结合，可以创建具有前所未有特性的复杂架构 3D 结构。这为广泛的应用开辟了机会，包括机电能量收集、电池或燃料电池的电极材料、热电学或具有压电刺激细胞生长的骨组织工程。
京公网安备 11010802027423号